--source include/have_sequence.inc
--source include/default_optimizer_switch.inc
let $no_pushdown= set statement optimizer_switch='condition_pushdown_for_derived=off' for;
set @@join_buffer_size=256*1024;

create table t1 (a int, b int, c int);
create table t2 (a int, b int, c int, d decimal);
insert into t1 values
  (1,21,345), (1,33,7), (8,33,114), (1,21,500), (1,19,107), (5,14,787),
  (8,33,123), (9,10,211), (5,16,207), (1,33,988), (5,27,132), (1,21,104),
  (6,20,309), (6,20,315), (1,21,101), (8,33,404), (9,10,800), (1,21,123),
  (7,11,708), (6,20,214);
insert into t2 values
  (2,3,207,207.0000), (1,21,909,12.0000), (7,13,312,406.0000),
  (8,64,248,107.0000), (6,20,315,279.3333), (1,19,203,107.0000),
  (8,80,800,314.0000), (3,12,231,190.0000), (6,23,303,909.0000);

create table t1_double(a int, b double, c double);
insert into t1_double values
  (1,23.4,14.3333), (1,12.5,18.9), (3,12.5,18.9),
  (4,33.4,14.3333), (4,14.3333,13.65), (5,17.89,7.22),
  (6,33.4,14.3), (10,33.4,13.65), (11,33.4,13.65);

create table t2_double(a int, b double, c double);
insert into t2_double values
  (1,22.4,14.3333), (1,12.5,18.9), (2,22.4,18.9),
  (4,33.4,14.3333), (5,22.4,13.65), (7,17.89,18.9),
  (6,33.4,14.3333), (10,31.4,13.65), (12,33.4,13.65);

create table t1_char(a char, b char(8), c int);
insert into t1_char values
  ('a','Ivan',1), ('b','Vika',2), ('b','Inga',6), ('c','Vika',7),
  ('b','Ivan',7), ('a','Alex',6), ('b','Inga',5), ('d','Ron',9),
  ('d','Harry',2), ('d','Hermione',3), ('c','Ivan',3), ('c','Harry',4);

create table t2_char(a char, b char(8), c int);
insert into t2_char values
  ('b','Ivan',1), ('c','Vinny',3), ('c','Inga',9), ('a','Vika',1),
  ('c','Ivan',2), ('b','Ali',6), ('c','Inga',2), ('a','Ron',9),
  ('d','Harry',1), ('b','Hermes',3), ('b','Ivan',11), ('b','Harry',4);

create table t1_decimal (a decimal(3,1), b decimal(3,1), c int);
insert into t1_decimal values
  (1,1,23),(2,2,11),(3,3,16),
  (1,1,12),(1,1,14),(2,3,15),
  (2,1,13),(2,3,11),(3,3,16);

create table t2_decimal (a decimal(3,1), b decimal(3,1), c int);
insert into t2_decimal values
  (2,1,13),(2,2,11),(3,3,16),
  (1,3,22),(1,3,14),(2,2,15),
  (2,1,43),(2,3,11),(2,3,16);

create view v1 as select a, b, max(c) as max_c, avg(c) as avg_c from t1
  group by a,b having max_c < 707;

create view v2 as select a, b, max(c) as max_c, avg(c) as avg_c from t1
  where t1.a>5 group by a,b having max_c < 707;

create view v3 as select a, b, min(c) as min_c from t1
  where t1.a<10 group by a,b having min_c > 109;

create view v4 as
  select a, b, min(max_c) as min_c from v1
    where (v1.a<15) group by a,b;

create view v_union as
  select a, b, min(c) as c from t1
    where t1.a<10 group by a,b having c > 109
      union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300;

create view v2_union as
  select a, b, min(c) as c from t1
    where t1.a<10 group by a,b having c > 109
      union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
      union
  select a, b, avg(c) as c from t1
    where t1.c>300 group by a,b having c < 707;

create view v3_union as
  select a, b, (a+1) as c from t1
    where t1.a<10
      union
  select a, b, c from t1
    where t1.b>10 and t1.c>100;

create view v4_union as
  select a, b, max(c)-100 as c from t1
    where t1.a<10 group by a,b having c > 109
      union
  select a, b, (c+100) as c from t1
    where t1.b>10;

create view v_double as
  select a, avg(a/4) as avg_a, b, c from t1_double
    where (b>12.2) group by b,c having (avg_a<22.333);

create view v_char as
  select a, b, max(c) as max_c from t1_char
    group by a,b having max_c < 9;

create view v_decimal as
  select a, b, avg(c) as avg_c from t1_decimal
    group by a,b having (avg_c>12);

--echo # conjunctive subformula : pushing into HAVING
let $query= select * from v1,t2 where (v1.max_c>214) and (t2.a>v1.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      group by a,b having max_c < 707) v1,
        t2 where (v1.a=t2.a) and (v1.max_c>300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into HAVING
let $query=
  select * from v1,t2 where
    ((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where
    ((v1.max_c>300) and (v1.avg_c>t2.d) and (v1.b=t2.b)) or
      ((v1.max_c<135) and (v1.max_c<t2.c) and (v1.a=t2.a));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformula : pushing into WHERE
let $query= select * from v1,t2 where (v1.a>6) and (t2.b>v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query= select * from v2,t2 where (v2.b>25) and (t2.a<v2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into WHERE
let $query=
  select * from v1,t2 where
    ((v1.a>7) and (t2.c<v1.max_c)) or ((v1.a<2) and (t2.b<v1.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v2,t2 where
   ((v2.a>7) and (t2.c<v2.max_c)) or ((v2.a>5) and (t2.b<v2.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where
    ((v1.a>4) and (v1.b>t2.b) and (v1.max_c=t2.d)) or
      ((v1.a<2) and (v1.max_c<t2.c) and (v1.max_c=t2.d));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformulas : pushing into HAVING and WHERE
let $query=
  select * from v1,t2 where (v1.a<2) and (v1.max_c>400) and (t2.b>v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v_double as v,t2_double as t where
    (v.a=t.a) and (v.avg_a>0.45) and (v.b>10);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v_decimal as v,t2_decimal as t where
    (v.a=t.a) and (v.avg_c>15) and (v.b>1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into HAVING and WHERE
let $query=
  select * from v1,t2 where
    ((v1.a>7) and (v1.max_c>300) and (t2.c<v1.max_c)) or
    ((v1.a<4) and (v1.max_c<500) and (t2.b<v1.b));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where ((v1.a<2) and (v1.max_c>120)) or (v1.a>7);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formulas : pushing into WHERE and HAVING
let $query=
  select * from v1,t2 where
    ((v1.a<2) and (v1.max_c>120) and (v1.b=t2.b)) or (v1.a>7);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where
    ((v1.a<2) and (v1.max_c<200) and (t2.c>v1.max_c) and (v1.max_c=t2.d)) or
      ((v1.a>4) and (v1.max_c<500) and (t2.b<v1.b) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # prepare of a query containing extracted or formula
prepare stmt from "select * from v1,t2 where
  ((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
execute stmt;
execute stmt;
deallocate prepare stmt;
prepare stmt from
  "explain format=json select * from v1,t2 where
    ((v1.max_c>400) and (t2.a>v1.a)) or ((v1.max_c<135) and (t2.a<v1.a));";
execute stmt;
execute stmt;
deallocate prepare stmt;

--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,t2 where (t2.a=v1.a) and (v1.b=t2.b) and (v1.a=1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query= select * from v1,t2 where (v1.a=5) and (v1.max_c=t2.d);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformula : pushing into WHERE using equalities
let $query= select * from v1,t2 where (t2.a<5) and (v1.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformula : pushing into HAVING using equalities
let $query= select * from v1,t2 where (t2.c>150) and (v1.max_c=t2.c);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted and formula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,t2 where (v1.a=v1.b) and (v1.a=t2.a) and (v1.a=3);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where (v1.a=1) and (v1.b=21) and (t2.a=2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v_char as v,t2_char as t where
    (v.a='c') and (v.b<'Hermes') and ((v.b=t.b) or (v.max_c>20));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted and formula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
select * from v_decimal as v,t2_decimal as t where
    (v.a=v.b) and (v.b=t.b) and ((t.b>1) or (v.a=1));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into HAVING using equalities
let $query=
  select * from v1,t2
    where ((t2.a<4) and (v1.a=t2.a)) or ((t2.c>150) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformulas : pushing into WHERE and HAVING using equalities
let $query=
  select * from v1,t2
    where ((t2.a>5) and (v1.a=t2.a)) and ((t2.c>250) and (v1.max_c=t2.c));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformulas : pushing into WHERE and HAVING
--echo # pushing equalities
let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      group by a,b having max_c < 707) v1,
        t2 where (v1.a=8) and (v1.a=t2.a) and (v1.max_c=404);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformulas : pushing into WHERE and HAVING
let $query=
  select * from v1,t2 where
    (v1.a>3) and (v1.max_c>200) and (t2.b<v1.b) and (t2.d=v1.max_c);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
--echo # pushing equalities
let $query=
  select * from v_double as v,t2_double as t where
    (v.b=v.c) and (v.c=t.c) and ((t.c>10) or (v.a=1));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
let $query=
  select * from v_double as v,t2_double as t where
    (((v.a>0.2) or (v.b<17)) or (t.c>17)) and (t.c=v.c) and (v.c>18);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
  select * from v_decimal as v,t2_decimal as t where
    (((v.a>4) or (v.a=2)) or (v.b>3)) and (v.avg_c=13);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      where t1.a>5 group by a,b having max_c < 707) v1,
        t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.a=v1.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # nothing to push
let $query=
  select * from v1,t2 where (t2.a<2) and (t2.c>900);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.b=t2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where
    (t2.a=v1.a) or (v1.b=t2.b) and ((v1.a=1) or (v1.a=6));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where (v1.a=1) or (v1.b=21) or (t2.a=2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,t2 where
    (t2.a<2) and (t2.c>900) and ((v1.a<t2.a) or (t2.a<11));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : nothing to push
let $query= select * from v1,v2,t2 where
  (v1.a=v2.a) and (v1.a=t2.a) and (v2.b<50);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,v2,t2 where
    ((v1.a=v2.a) or (v1.a=t2.a)) and (t2.b<50) and (v1.b=v2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v1,v2,t2 where
    ((v1.a=v2.a) and (v1.a=t2.a)) or ((v2.b>13) and (t2.c<115));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into HAVING
--echo # extracted or formula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,v2,t2 where ((v1.a=v2.a) or (v1.a=t2.a)) and
    ((v2.b<50) or (v2.b=19)) and (v1.max_c<300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,v2,t2 where
    (v1.a=t2.a) and (v1.a=v1.b) and (v1.a=v2.a) and (v2.max_c<300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing only in one table
--echo # extracted and formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
  select * from v1,v2,t2 where (v1.a=1) and (v1.b>10) and (v1.b=v2.b);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
  select * from v_char as v,t2_char as t where
    (v.a=t.a) and (t.a='b') and ((v.b='Vika') or (v.b='Ali'));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
--echo # pushing equalities
let $query=
  select * from v1,v2,v3,t2 where
    ((v1.a=v2.a) or (v1.a=t2.a)) and ((v3.b<50) or (v3.b=33))
      and (v1.max_c<500) and (v3.a=t2.a) and (v2.max_c>300);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformulas : pushing into HAVING
let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      where t1.a>5 group by a,b having max_c < 707) v1,
    (select a, b, min(c) as min_c from t1
      where t1.a>5 group by a,b having min_c < 707) v2,
      t2 where (v1.a=v2.a) and (v1.b=t2.b) and (v1.max_c>130) and (v2.min_c<130);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using several derived tables : pushing in all tables
--echo # extracted or formulas : pushing into HAVING
--echo # conjunctive subformula : pushing into HAVING
let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      where t1.a>5 group by a,b having max_c < 707) v1,
    (select a, b, min(c) as min_c from t1
      where t1.a>5 group by a,b having min_c < 707) v2,
    (select a, b, avg(c) as avg_c from t1
      where t1.a<8 group by a,b) v3,
      t2 where (v1.a=v2.a) and (v1.b=v3.b) and ((v3.avg_c>170) or (v3.a<5))
        and ((v1.avg_c<400) or (v1.a>1)) and (v2.min_c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted or formula : pushing into HAVING
--echo # conjunctive subformula : pushing into WHERE
let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      group by a,b having max_c < 707) v1,
        t2 where ((v1.a=1) or (v1.max_c<300)) and (v1.b>25);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # extracted and formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
let $query=
  select * from
    (select a, b, max(c) as max_c, avg(c) as avg_c from t1
      where t1.a>5 group by a,b having max_c < 707) v1,
        t2 where (v1.a=t2.a) and (v1.max_c>300) and (v1.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using query with union
--echo # conjunctive subformula : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING and WHERE
let $query=
  select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (t2.c>800)
    union
  select * from v1,t2 where (v1.max_c>100) and (v1.a>7) and (t2.d>800);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using query with union
--echo # extracted and formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
--echo # pushing equalities
let $query=
  select * from v1,t2 where (v1.a<5) and (v1.b=t2.b) and (v1.b=19)
    union
  select * from v1,t2 where ((v1.max_c>400) or (v1.avg_c>270)) and (v1.a<t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using query with union
--echo # extracted or formula : pushing into HAVING
--echo # extracted or formula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,t2 where
    ((t2.a=v1.a) or (v1.b=t2.b)) and ((v1.a=1) or (v1.a=6))
      union
  select * from v1,t2 where ((v1.a>3) and (v1.b>27)) or (v1.max_c>550);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using query with union
--echo # extracted or formula : pushing into HAVING
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v1,t2 where
    ((v1.a=1) and (v1.a=t2.a)) and ((v1.max_c<500) or (v1.avg_c>500))
      union
  select * from v2,t2 where
    ((v2.a<t2.b) or (v2.max_c>200)) and (v2.b>10) and (t2.a<2)
      union
  select * from v2,t2 where
    (v2.max_c=t2.c) and (v2.b<10);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union
--echo # conjunctive subformulas : pushing into WHERE and HAVING
let $query= select * from v_union,t2 where (v_union.a<3) and (v_union.c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
let $query=
  select * from v_union,t2 where
    ((v_union.a<2) or (v_union.c>800)) and (v_union.b>12);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union
--echo # conjunctive subformula : pushing into HAVING
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v_union,t2 where
    (v_union.a=1) and (v_union.a=t2.a) and (v_union.c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

let $query=
  select * from v_char as v,t2_char as t where
    (v.a=t.a) and (v.b='Vika') and (v.max_c>2);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
  select * from v_union,v1,t2 where
    (v_union.a=v1.a) and (v1.a=t2.a) and (t2.a=1)
    and ((v_union.c>800) or (v1.max_c>200));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
  select * from v2_union as v,t2 where
    ((v.a=6) or (v.a=8)) and (v.c>200) and (v.a=t2.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union of selects without aggregation
--echo # extracted conjunctive predicate: pushing in WHERE of both selects
let $query=
  select * from v3_union as v,t2 where (v.a=t2.a) and (v.c>6);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union of selects without aggregation
--echo # extracted conjunctive OR subformula: pushing in WHERE using equalities
let $query=
  select * from v3_union as v,t2 where (v.a=t2.a) and ((t2.a>1) or (v.b<20));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union of selects without aggregation
--echo # extracted the whole condition: in WHERE of both selects
let $query=
  select * from v3_union as v,t2 where
    (v.a=t2.a) and ((v.b=19) or (v.b=21)) and ((v.c<3) or (v.c>600));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union of
--echo # a select without aggregation and a select with aggregation
--echo # extracted conjunctive predicate: pushing in WHERE of both selects
let $query=
  select * from v4_union as v,t2 where (v.a=t2.a) and (v.b<20);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using derived table with union of
--echo # a select without aggregation and a select with aggregation
--echo # extracted subformula: pushing in WHERE of one select
--echo # extracted subformula: pushing in HAVING of the other select
--echo # extracted sub-subformula: pushing in WHERE of the other select
--echo # using an equality in all pushdowns
let $query=
  select * from v4_union as v,t2 where
    (v.a=t2.a) and ((t2.a<3) or (v.b<40)) and (v.c>500);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded derived table : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE
--echo # extracted and formula : pushing into WHERE
let $query=
select * from v4,v1 where
    (v4.a<13) and (v1.a>5) and (v1.b>12);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : nothing to push
--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
let $query=
  select * from v4,v1,t2 where
    (v4.a=t2.a) and (v4.a=v1.a) and (v1.b>30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing in all tables
--echo # conjunctive subformula : pushing into WHERE using equalities
--echo # extracted and formula : pushing into WHERE using equalities
--echo # conjunctive subformula : pushing into HAVING
let $query=
  select * from v4,v1,t2 where
    (v4.a=t2.a) and (v4.a>1) and (v4.a=v1.a) and (v4.min_c>100) and (v1.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
let $query=
  select * from v4,v1,t2 where
    (((v4.b>10) and (v4.a>1)) or (v4.b<20)) and (v1.max_c>200) and (v1.a=v4.a);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing only in one table
--echo # extracted or formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
let $query=
  select * from v4,v2 where
    ((v4.a>12) and (v4.min_c<300) and (v4.b>13)) or (v4.a<1);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing different conditions
--echo # using several derived tables : pushing only in one table
--echo # conjunctive subformula : pushing into WHERE
--echo # conjunctive subformula : pushing into HAVING
--echo # pushing equalities
let $query=
  select * from v4,v2 where
    (v4.a=v2.b) and (v4.a=v4.b) and (v4.min_c<100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted and formula : pushing into WHERE using equalities
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v4,v2 where
    (v4.a=v2.b) and (v4.a=v4.b) and (v2.b<30);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE using equalities
--echo # extracted and formula : pushing into WHERE using equalities
--echo # pushing equalities
let $query=
  select * from v4,v2 where
    (v4.a=v2.b) and (v4.a=v4.b) and ((v2.b<30) or (v4.a>2));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing in all tables
--echo # extracted or formula : pushing into WHERE
--echo # conjunctive subformula : pushing into WHERE
--echo # pushing equalities
let $query=
  select * from v4,v2 where
    (((v4.a<12) and (v4.b>13)) or (v4.a>10)) and
    (v4.min_c=v2.max_c) and (v4.min_c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using embedded view : pushing the same conditions
--echo # using several derived tables : pushing only in one table
--echo # extracted or formula : pushing into WHERE
let $query=
  select * from v4,v2,t2 where
    (((v4.a<12) and (t2.b>13)) or (v4.a>10)) and
    (v4.min_c=t2.c) and (t2.c>100);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1,v2,v3,v4;
drop view v_union,v2_union,v3_union,v4_union;
drop view v_double,v_char,v_decimal;
drop table t1,t2,t1_double,t2_double,t1_char,t2_char,t1_decimal,t2_decimal;

--echo #
--echo # MDEV-10782: condition extracted from a multiple equality
--echo #             pushed into HAVING
--echo #

CREATE TABLE t1 (i int);
INSERT INTO t1 VALUES (1),(2);
EXPLAIN EXTENDED
SELECT *
  FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
    WHERE f = 8;
SELECT *
  FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
    WHERE f = 8;
SELECT *
  FROM ( SELECT * FROM ( SELECT MIN(i) as f FROM t1 ) sq1 ) AS sq2
    WHERE f = 1;
DROP TABLE t1;

--echo #
--echo # MDEV-10783: pushdown into constant view
--echo #

CREATE TABLE t1 (i int) ENGINE=MyISAM;
CREATE VIEW v AS SELECT 5;
SELECT * FROM t1 WHERE 1 IN ( SELECT * FROM v );
DROP VIEW v;
DROP TABLE t1;

--echo #
--echo # MDEV-10785: second execution of a query with condition
--echo #             pushed into view
--echo #

CREATE TABLE t1 (i int);
CREATE VIEW v1 AS SELECT i FROM t1 WHERE i < 5;
CREATE FUNCTION f (in1 int) RETURNS int RETURN in1;
CREATE VIEW v2 AS SELECT * FROM v1 GROUP BY i;
PREPARE stmt FROM "SELECT * FROM v2 WHERE f(0) <> 2";
EXECUTE stmt;
EXECUTE stmt;
DROP FUNCTION f;
DROP VIEW v2,v1;
DROP TABLE t1;

--echo #
--echo # MDEV-10884: condition pushdown into derived specified by
--echo #             1. unit with  SELECT containing ORDER BY ... LIMIT
--echo #             2. unit containing global ORDER BY ... LIMIT
--echo #

create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
select a from t1 order by a limit 5;

set statement optimizer_switch='condition_pushdown_for_derived=off' for
select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);
set statement optimizer_switch='condition_pushdown_for_derived=on' for
select * from (select a from t1 order by a limit 5) t where t.a not in (1,2,3);

select a from t1 where a < 4 union select a from t1 where a > 5
  order by a limit 5;
set statement optimizer_switch='condition_pushdown_for_derived=off' for
select * from
(select a from t1 where a < 4 union select a from t1 where a > 5
 order by a limit 5) t where t.a not in (2,9);
set statement optimizer_switch='condition_pushdown_for_derived=on' for
select * from
(select a from t1 where a < 4 union select a from t1 where a > 5
 order by a limit 5) t where t.a not in (2,9);

drop table t1;

--echo #
--echo # MDEV-11072: pushdown of the condition obtained
--echo #             after constant row substitution
--echo #

CREATE TABLE t1 (a INT) ENGINE=MyISAM;
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
CREATE OR REPLACE VIEW v2 AS SELECT * FROM t2;
CREATE TABLE t3 (c INT) ENGINE=MyISAM;
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v3 AS SELECT * FROM t3;

SELECT * FROM t1 WHERE a IN (
  SELECT b FROM v2 WHERE b < a OR b IN (
    SELECT c FROM v3 WHERE c = a
  )
);

INSERT INTO t1 VALUES (2);
INSERT INTO t2 VALUES (3), (2);
INSERT INTO t3 VALUES (4), (1), (2), (7);

SELECT * FROM t1 WHERE a IN (
  SELECT b FROM v2 WHERE b < a OR b IN (
    SELECT c FROM v3 WHERE c = a
  )
);

EXPLAIN FORMAT=JSON
SELECT * FROM t1 WHERE a IN (
  SELECT b FROM v2 WHERE b < a OR b IN (
    SELECT c FROM v3 WHERE c = a
  )
);

CREATE TABLE t4 (d INT, e INT) ENGINE=MyISAM;
INSERT INTO t4 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
CREATE OR REPLACE VIEW v4 AS
SELECT d, sum(e) AS s FROM t4 GROUP BY d;

let $query =
SELECT * FROM t1 WHERE a IN (
  SELECT b FROM v2 WHERE b < a OR b IN (
    SELECT d FROM v4 WHERE s > a
  )
);

eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

DROP VIEW v2,v3,v4;
DROP TABLE t1,t2,t3,t4;

--echo #
--echo # MDEV-10800: pushdown of the condition obtained
--echo #             after constant row substitution
--echo #


CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1);

CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3),(4);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;

SELECT * FROM
( SELECT * FROM t1
    WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;

EXPLAIN FORMAT=JSON
SELECT * FROM
( SELECT * FROM t1
    WHERE EXISTS ( SELECT * FROM v2 WHERE b = a ) ) AS sq;

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-11102: condition pushdown into materialized inner table
--echo #              of outer join is not applied as not being valid
--echo #

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (0),(2);

CREATE TABLE t2 (b INT);
INSERT INTO t2 VALUES (1),(2);

CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;

SELECT * FROM t1 LEFT JOIN t2 ON a = b WHERE b IS NULL;

SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;

EXPLAIN FORMAT=JSON
SELECT * FROM t1 LEFT JOIN v2 ON a = b WHERE b IS NULL;

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-11103: pushdown condition with ANY subquery
--echo #

CREATE TABLE t1 (i INT);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (1),(2);
--enable_prepare_warnings
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );
--disable_prepare_warnings

SELECT * FROM v1 WHERE i <= ANY ( SELECT 3 );

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-11315: condition with outer reference to mergeable derived
--echo #

CREATE TABLE t1 (pk1 INT PRIMARY KEY, a INT, b INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (10,7,1),(11,0,2);

CREATE TABLE t2 (pk2 INT PRIMARY KEY, c INT, d DATETIME) ENGINE=MyISAM;
INSERT INTO t2 VALUES
 (1,4,'2008-09-27 00:34:58'),
 (2,5,'2007-05-28 00:00:00'),
 (3,6,'2009-07-25 09:21:20');

CREATE VIEW v1 AS SELECT * FROM t1;
CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;

SELECT * FROM v1 AS sq
  WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
EXPLAIN FORMAT=JSON
SELECT * FROM v1 AS sq
  WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;

SELECT * FROM ( SELECT * FROM t1 ) AS sq
  WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT * FROM t1 ) AS sq
  WHERE b IN ( SELECT pk2 FROM v2 WHERE c > sq.b ) OR b = 100;

DROP VIEW v1,v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-11313: pushdown of the condition obtained
--echo #             after constant row substitution
--echo #

CREATE TABLE t1 (a INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);
CREATE TABLE t2 (b INT) ENGINE=MyISAM;
INSERT INTO t2 VALUES (50);
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;

SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;
EXPLAIN FORMAT=JSON
SELECT ( SELECT COUNT(*) FROM v1 WHERE a = t2.b ) AS f FROM t2 GROUP BY f;

CREATE TABLE t3 (a INT, b INT) ENGINE=MYISAM;
INSERT INTO t3 VALUES (1,10),(3,11),(2,10),(2,20),(3,21);
CREATE VIEW v2 AS SELECT a, sum(b) AS s FROM t3 GROUP BY a ;
SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;
EXPLAIN FORMAT=JSON
SELECT ( SELECT COUNT(*) FROM v2 WHERE s < t2.b ) AS f FROM t2 GROUP BY f;


DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-10882: pushdown of the predicate with cached value
--echo #

CREATE TABLE t1 (a INT NOT NULL, b INT NOT NULL) ENGINE=MyISAM;
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (1,2),(3,4);

CREATE TABLE t2 (c INT NOT NULL) ENGINE=MyISAM;
INSERT INTO t2 VALUES (5),(6);

SELECT a, GROUP_CONCAT(b) FROM v1
  WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;

EXPLAIN FORMAT=JSON
SELECT a, GROUP_CONCAT(b) FROM v1
  WHERE b IN ( SELECT COUNT(c) FROM t2 ) GROUP BY a;

DROP VIEW v1;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-10836: pushdown of the predicate with cached value
--echo #

CREATE TABLE t (pk INT PRIMARY KEY, f INT) ENGINE=MyISAM;
CREATE ALGORITHM=TEMPTABLE VIEW v AS SELECT * FROM t;
INSERT INTO t VALUES (1,1),(3,2);

SELECT * FROM v AS v1, v AS v2
  WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );

EXPLAIN FORMAT=JSON
SELECT * FROM v AS v1, v AS v2
  WHERE v2.pk > v1.f AND v1.f IN ( SELECT COUNT(pk) FROM t );

DROP VIEW v;
DROP TABLE t;

--echo #
--echo # MDEV-11488: pushdown of the predicate with cached value
--echo #

CREATE TABLE t1 (i INT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(3),(2);

CREATE TABLE t2 (j INT, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3),(4);

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

UPDATE t2 SET j = 2 WHERE j = 3;
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i FLOAT) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1.5),(3.2),(2.71);

CREATE TABLE t2 (j FLOAT, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3.2),(2.71);

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i DECIMAL(10,2)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1.5),(3.21),(2.47);

CREATE TABLE t2 (j DECIMAL(10,2), KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (3.21),(4.55);

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i VARCHAR(32)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('cc'),('aa'),('ddd');

CREATE TABLE t2 (j VARCHAR(16), KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('bbb'),('aa');

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i DATETIME) ENGINE=MyISAM;
INSERT INTO t1 VALUES
 ('2008-09-27 00:34:58'),('2007-05-28 00:00:00'), ('2009-07-25 09:21:20');

CREATE TABLE t2 (j DATETIME, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES
 ('2007-05-28 00:00:00'), ('2010-08-25 00:00:00');

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i DATE) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('2008-09-27'),('2007-05-28'), ('2009-07-25');

CREATE TABLE t2 (j DATE, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('2007-05-28'), ('2010-08-25');

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

CREATE TABLE t1 (i TIME) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('00:34:58'),('10:00:02'), ('09:21:20');

CREATE TABLE t2 (j TIME, KEY(j)) ENGINE=MyISAM;
INSERT INTO t2 VALUES ('10:00:02'), ('11:00:10');

SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );
EXPLAIN FORMAT=JSON
SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq
  WHERE i IN ( SELECT MIN(j) FROM t2 );

DROP TABLE t1,t2;

--echo #
--echo # MDEV-11593: pushdown of condition with NULLIF
--echo #

CREATE TABLE t1 (i INT);
CREATE OR REPLACE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;

INSERT INTO t1 VALUES (2), (1);

SELECT * FROM v1 WHERE NULLIF(1, i);
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE NULLIF(1, i);

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-11608: pushdown of the predicate with cached null value
--echo #

CREATE TABLE t1 (c VARCHAR(3));
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES ('foo'),('bar');

CREATE TABLE t2 (c VARCHAR(3));
INSERT INTO t2 VALUES ('foo'),('xyz');

SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );
EXPLAIN FORMAT=JSON
SELECT * FROM v1 WHERE v1.c IN ( SELECT MIN(c) FROM t2 WHERE 0 );

DROP VIEW v1;
DROP TABLE t1,t2;

CREATE TABLE t1 (d DECIMAL(10,2));
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
INSERT INTO t1 VALUES (5.37),(1.1);

CREATE TABLE t2 (d DECIMAL(10,2));
INSERT INTO t2 VALUES ('1.1'),('2.23');

SELECT * FROM v1 WHERE v1.d IN ( SELECT MIN(d) FROM t2 WHERE 0 );

DROP VIEW v1;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-11820: second execution of PS for query
--echo #             with false subquery predicate in WHERE
--echo #

CREATE TABLE t1 (c VARCHAR(3)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ('foo'),('bar');
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (a INT);
INSERT INTO t2 VALUES (3), (4);

PREPARE stmt1 FROM
" SELECT * FROM v1 WHERE 1 IN (SELECT a FROM t2) OR c = 'foo'";
PREPARE stmt2 FROM
"EXPLAIN FORMAT=JSON
 SELECT * FROM v1 WHERE 1 IN (SELECT a FROM t2) OR c = 'foo'";
EXECUTE stmt1;
EXECUTE stmt2;
INSERT INTO t2 SELECT a+1 FROM t2;
INSERT INTO t2 SELECT a+1 FROM t2;
INSERT INTO t2 SELECT a+1 FROM t2;
INSERT INTO t2 SELECT a+1 FROM t2;
INSERT INTO t2 SELECT a+1 FROM t2;
INSERT INTO t2 SELECT a+1 FROM t2;
EXECUTE stmt1;
EXECUTE stmt2;
DEALLOCATE PREPARE stmt1;
# the result here will change after the merge with the fix for mdev-11859
DEALLOCATE PREPARE stmt2;

DROP VIEW v1;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-12373: pushdown into derived with side effects is prohibited
--echo #

CREATE TABLE sales_documents (
 id           int NOT NULL AUTO_INCREMENT,
 sale_id      int NULL DEFAULT NULL,
 type         tinyint unsigned NULL DEFAULT NULL,
 data         text NULL DEFAULT NULL COLLATE 'utf8_unicode_ci',
 date         date NULL DEFAULT NULL,
 order_number int unsigned NULL DEFAULT NULL,
 created_at   int NULL DEFAULT NULL,
 updated_at   int NULL DEFAULT NULL,
 generated    tinyint NOT NULL DEFAULT '0',
 synced_at    int NOT NULL DEFAULT '0',
 sum          decimal(13,2) NOT NULL DEFAULT '0',
 PRIMARY KEY (id)
);

INSERT INTO sales_documents
(id, sale_id, type, order_number, data, created_at,
 updated_at, date, generated, synced_at, sum)
VALUES
(555, 165, 3, 5, '{}', 1486538300, 1486722835, '2017-02-17', 0, 1486538313, 2320.00),
(556, 165, 2, 3, '{}', 1486538304, 1486563125, '2017-02-08', 1, 1486538302, 2320.00),
(557, 158, 2, 2, '{}', 1486538661, 1486538661, '2017-02-08', 0, 1486538660, 2320.00),
(558, 171, 1, 3, '{}', 1486539104, 1488203405, '2017-02-08', 1, 1486539102, 23230.00),
(559, 171, 2, 5, '{}', 1486549233, 1487146010, '2017-02-08', 1, 1486549225, 37690.00),
(560, 172, 1, 1, '{}', 1486658260, 1488203409, '2017-02-09', 1, 1486658256, 40312.00),
(561, 172, 2, 1, '{}', 1486711997, 1486711997, '2017-02-10', 1, 1486711996, 40312.00),
(562, 172, 3, 1, '{}', 1486712104, 1486721395, '2017-02-10', 1, 1486712101, 40312.00),
(563, 171, 3, 2, '{}', 1486712953, 1486720244, '2017-02-10', 1, 1486712910, 23230.00),
(564, 170, 1, 2, '{}', 1486715948, 1488203410, '2017-02-10', 1, 1486715930, 28873.00),
(565, 170, 3, 3, '{}', 1486716782, 1486717426, '2017-02-10', 1, 1486716779, 61948.00),
(566, 166, 3, 4, '{}', 1486720947, 1486720947, '2017-02-10', 1, 1486720945, 4640.00),
(567, 167, 3, 5, '{}', 1486722741, 1486722783, '2017-02-26', 0, 1486722738, 14755.00),
(568, 165, 1, 4, '{}', 1486722849, 1486722849, '2017-02-10', 0, 1486722846, 2320.00),
(569, 173, 2, 2, '{}', 1486723073, 1487071275, '2017-02-10', 1, 1486723071, 14282.00),
(570, 173, 1, 4, '{}', 1486723100, 1488203412, '2017-02-10', 1, 1486723099, 14282.00),
(571, 167, 2, 4, '{}', 1486730859, 1486730859, '2017-02-10', 1, 1486730856, 18655.00),
(572, 167, 1, 5, '{}', 1486730883, 1488203412, '2017-02-10', 1, 1486730877, 18655.00),
(573, 174, 2, 51, '{}', 1486731622, 1487060259, '2017-02-10', 1, 1486731620, 7140.00),
(574, 174, 3, 5, '{}', 1486993472, 1486993472, '2017-02-13', 1, 1488216147, 28020.00),
(575, 174, 1, 6, '{}', 1486993530, 1488203412, '2017-02-13', 1, 1486993505, 7140.00),
(576, 173, 3, 6, '{}', 1487071425, 1487071425, '2017-02-14', 0, 1487071422, 14282.00),
(577, 178, 2, 6, '{}', 1487327372, 1487327372, '2017-02-17', 1, 1487327370, 12321.00),
(578, 177, 2, 7, '{}', 1487327394, 1487327394, '2017-02-17', 0, 1487327391, 4270.00),
(579, 182, 3, 6, '{}', 1487750589, 1487751693, '2017-02-22', 1, 1487751688, 4270.00),
(580, 182, 2, 7, '{}', 1487750601, 1487750663, '2017-02-22', 1, 1487750598, 4270.00),
(581, 182, 1, 7, '{}', 1487750694, 1488203412, '2017-02-22', 1, 1487750692, 4270.00),
(582, 185, 3, 7, '{}', 1487774051, 1487774051, '2017-02-22', 0, 1487774043, 8913.00),
(583, 184, 3, 7, '{}', 1487774071, 1487774235, '2017-02-22', 0, 1487774093, 3285.00),
(584, 184, 2, 8, '{}', 1487774074, 1487774074, '2017-02-22', 0, 1487774073, 3285.00),
(585, 184, 1, 8, '{}', 1487774081, 1487774081, '2017-02-22', 0, 1487774075, 3285.00),
(586, 193, 2, 8, '{}', 1487955294, 1487955318, '2017-02-24', 0, 1487955311, 4270.00),
(587, 193, 1, 8, '{}', 1487955324, 1487955324, '2017-02-24', 0, 1487955320, 4270.00),
(588, 193, 3, 7, '{}', 1487955341, 1487955341, '2017-02-24', 0, 1487955325, 4270.00),
(589, 186, 1, 8, '{}', 1487957291, 1487957464, '2017-02-24', 0, 1487957459, 6960.00),
(590, 186, 2, 8, '{}', 1487957308, 1487957468, '2017-02-24', 0, 1487957465, 6960.00),
(591, 186, 3, 7, '{}', 1487957312, 1487957473, '2017-02-24', 0, 1487957469, 6960.00),
(592, 194, 1, 8, '{}', 1488193293, 1488203412, '2017-02-27', 1, 1488193280, 2320.00),
(593, 194, 2, 8, '{}', 1488193304, 1488193304, '2017-02-27', 1, 1488193303, 2320.00),
(594, 210, 1, 9, '{}', 1488198896, 1488198896, '2017-02-27', 0, 1488198885, 4270.00),
(595, 210, 2, 12, '{}', 1488198901, 1488198901, '2017-02-27', 1, 1488532585, 4270.00),
(596, 210, 3, 10, '{}', 1488198904, 1488198904, '2017-02-27', 1, 1488532565, 4270.00),
(597, 209, 2, 9, '{}', 1488200016, 1488450772, '2017-02-27', 1, 1488450449, 4270.00),
(598, 209, 1, 9, '{}', 1488200020, 1488200063, '2017-02-27', 1, 1488200017, 4271.00),
(599, 209, 3, 7, '{}', 1488200053, 1488200053, '2017-02-27', 0, 1488200021, 4271.00),
(600, 211, 2, 10, '{}', 1488216265, 1489402027, '2017-02-27', 1, 1488216264, 2320.00),
(601, 211, 3, 7, '{}', 1488216281, 1488216281, '2017-02-27', 1, 1488216276, 2320.00),
(602, 211, 1, 10, '{}', 1488216283, 1488216283, '2017-02-27', 1, 1488216282, 2320.00),
(603, 198, 2, 11, '{}', 1488280125, 1488280125, '2017-02-28', 0, 1488280095, 4270.00),
(604, 198, 1, 11, '{}', 1488280160, 1488280160, '2017-02-28', 0, 1488280126, 4270.00),
(605, 198, 3, 8, '{}', 1488280440, 1488280440, '2017-02-28', 0, 1488280435, 4270.00),
(606, 212, 1, 12, '{}', 1488286301, 1489402168, '2017-02-28', 1, 1488286295, 13825.00),
(607, 212, 3, 8, '{}', 1488289644, 1488289690, '2017-02-28', 1, 1488289642, 25295.00),
(608, 212, 2, 13, '{}', 1488290350, 1488290431, '2017-02-28', 1, 1488290347, 13133.75),
(609, 213, 1, 11, '{}', 1488529470, 1488529470, '2017-03-03', 1, 1488529461, 5660.00),
(610, 213, 2, 11, '{}', 1488529484, 1488529484, '2017-03-03', 1, 1488529479, 5660.00),
(611, 213, 3, 9, '{}', 1488529493, 1488529493, '2017-03-03', 1, 1488529489, 5660.00),
(612, 197, 2, 13, '{}', 1489400715, 1489400715, '2017-03-13', 0, 1489398959, 4270.00),
(613, 219, 3, 11, '{}', 1490084337, 1490181958, '2017-03-21', 1, 1490084334, 73526.00),
(614, 216, 3, 11, '{}', 1490085757, 1490086717, '2017-03-21', 0, 1490085755, 5377.00);

SELECT * FROM
(SELECT @row := @row + 1 as row, a.* from (
	SELECT t.order_number
	FROM sales_documents t
	WHERE
		t.type = 2 AND
		t.date >= '2017-01-01' AND
		t.date <= '2017-12-31' AND
		t.order_number IS NOT NULL AND
		t.generated = 1
	GROUP BY t.order_number
) a, (SELECT @row := 0) r) t
WHERE row <> order_number;

DROP TABLE sales_documents;

--echo #
--echo # MDEV-12845: pushdown from merged derived using equalities
--echo #

create table t1 (a int);
insert into t1 values
  (4), (8), (5), (3), (10), (2), (7);

create table t2 (b int, c int);
insert into t2 values
  (2,1), (5,2), (2,2), (4,1), (4,3),
  (5,3), (2,4), (4,6), (2,1);

create view v1 as
select b, sum(c) as s from t2 group by b;

create view v2 as
select distinct b, c from t2;

create view v3 as
select b, max(c) as m from t2 group by b;

let $q1=
select b
from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
where b > 2;

eval $q1;
eval explain format=json $q1;

let $q2=
select a
from ( select t1.a, v1.b, v1.s from t1, v1 where t1.a = v1.b ) as t
where a > 2;

eval $q2;
eval explain format=json $q2;

let $q3=
select a
from  ( select t1.a, v2.b, v2.c from t1, v2 where t1.a = v2.b ) as t
where a > 2;

eval $q3;
eval explain format=json $q3;

let $q4=
select a
from  ( select t1.a, v3.b, v3.m from t1, v3 where t1.a = v3.m ) as t
where a > 2;

eval $q4;
eval explain format=json $q4;

drop view v1,v2,v3;
drop table t1,t2;

--echo #
--echo # MDEV-13166: pushdown from merged derived
--echo #

CREATE TABLE t1 (i int) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);
CREATE VIEW v1 AS SELECT MAX(i) AS f FROM t1;

let $q=
SELECT * FROM ( SELECT * FROM v1 ) AS sq WHERE f > 0;

eval $q;
eval explain format=json $q;

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-13193: pushdown of equality extracted from multiple equality
--echo #

CREATE TABLE t1 (i1 int, KEY(i1)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1),(2);

CREATE TABLE t2 (i2 int) ENGINE=MyISAM;
INSERT INTO t2 VALUES (2),(4);

CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2;

let $q=
SELECT * FROM t1, ( SELECT * FROM v2 ) AS sq
  WHERE i1 = 1 AND ( i1 = i2 OR i1 = 2 );

eval $q;
eval explain format=json $q;

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-14237: derived with regexp_substr() in select list
--echo #

create table t1 (a char(8));
insert into t1 values ('b'), ('a'), ('xx');

let $q=
select *
from ( select distinct regexp_substr(t1.a,'^[A-Za-z]+') as f from t1) as t
where t.f = 'a' or t.f = 'b';

eval $q;
eval explain format=json $q;

drop table t1;

--echo #
--echo # MDEV-13454: consequence of mdev-14368 fixed for 5.5
--echo #

SET  sql_mode = 'ONLY_FULL_GROUP_BY';

create table t1 (id int, id2 int);
insert into t1 values (1,1),(2,3),(3,4),(7,2);

create table t2(id2 int);
insert  t2 values (1),(2),(3);

let $q=
SELECT * FROM t1
  LEFT OUTER JOIN
  (SELECT id2, COUNT(*) as ct FROM t2 GROUP BY id2) vc USING (id2)
WHERE (vc.ct>0);

eval $q;
eval EXPLAIN FORMAT=JSON $q;

DROP TABLE t1,t2;

SET  sql_mode = DEFAULT;

--echo #
--echo # MDEV-15579: incorrect removal of sub-formulas to be pushed
--echo #             into WHERE of materialized derived with GROUP BY
--echo #

CREATE TABLE t1 (a INT, b INT, c INT, d INT);
CREATE TABLE t2 (x INT, y INT, z INT);

INSERT INTO t1 VALUES (1,1,66,1), (1,1,56,2), (3,2,42,3);
INSERT INTO t2 VALUES (1,1,66), (1,12,32);

let $query=
SELECT *
FROM t2,
(
  SELECT a, b, max(c) AS max_c
  FROM t1
  GROUP BY a
  HAVING max_c > 37
) AS v1
WHERE (v1.a=1) AND (v1.b=v1.a) AND
      (v1.a=t2.x) AND (v1.max_c>30);
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT *
FROM t2,
(
  SELECT a, b, d, max(c) AS max_c
  FROM t1
  GROUP BY a,d
  HAVING max_c > 37
) AS v1
WHERE (v1.a=1) AND (v1.b=v1.a) AND (v1.b=v1.d) AND
      (v1.a=t2.x) AND (v1.max_c>30);
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

DROP TABLE t1,t2;

--echo #
--echo # MDEV-15765: pushing condition with temporal constants
--echo #             into constant tables
--echo #

select * from (select  date('2018-01-01') as d
               union all
               select  date('2018-01-01') as d) as t
  where t.d between date ('2017-01-01') and date ('2019-01-01');

select * from (select  date('2018-01-01') as d) as t
  where t.d between date ('2017-01-01') and date ('2019-01-01');

--echo #
--echo # MDEV-16088: pushdown into derived defined in the IN subquery
--echo #

CREATE TABLE t1 (a INT, b INT);
CREATE TABLE t2 (e INT, f INT, g INT);
INSERT INTO t1 VALUES (1,14),(2,13),(1,19),(2,32),(3,24);
INSERT INTO t2 VALUES (1,19,2),(3,24,1),(1,12,2),(3,11,3),(2,32,1);

let $query=
SELECT * FROM t1
WHERE (t1.a,t1.b) IN
  (
    SELECT d_tab.e,d_tab.max_f
    FROM (
      SELECT t2.e, MAX(t2.f) AS max_f
      FROM t2
      GROUP BY t2.e
      HAVING max_f>18
    ) as d_tab
    WHERE d_tab.e>1
  )
;
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM t1
WHERE (t1.a,t1.b) IN
  (
    SELECT d_tab.e,d_tab.max_f
    FROM (
      SELECT t2.e, MAX(t2.f) AS max_f
      FROM t2
      GROUP BY t2.e
      HAVING max_f>18
    ) as d_tab
    WHERE d_tab.max_f<25
  )
;
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM t1
WHERE (t1.a,t1.b) IN
  (
    SELECT d_tab.e, MAX(d_tab.max_f) AS max_f
    FROM (
      SELECT t2.e, MAX(t2.f) as max_f, t2.g
      FROM t2
      GROUP BY t2.e
    ) as d_tab
    WHERE d_tab.e>1
    GROUP BY d_tab.g
  )
;
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM t1
WHERE (t1.a,t1.b) IN
  (
    SELECT d_tab.e, MAX(d_tab.max_f) AS max_f
    FROM (
      SELECT t2.e, MAX(t2.f) as max_f, t2.g
      FROM t2
      GROUP BY t2.e
    ) as d_tab
    WHERE d_tab.max_f>20
    GROUP BY d_tab.g
  )
;
eval $query;
eval EXPLAIN $query;
eval EXPLAIN FORMAT=JSON $query;

DROP TABLE t1,t2;

--echo #
--echo # MDEV-15765: pushing condition with IN subquery defined with constants
--echo #             using substitution
--echo #

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1),(2);
SELECT * FROM
(
  SELECT DISTINCT * FROM t1
) der_tab
WHERE (a>0 AND a<2 OR a IN (2,3)) AND
      (a=2 OR 0);

DROP TABLE t1;

--echo #
--echo # MDEV-16386: pushing condition into the HAVING clause when ambiguous
--echo #             fields warning appears
--echo #

CREATE TABLE t1 (a INT, b INT);

INSERT INTO t1 VALUES (1,2),(2,3),(3,4);

let $query=
SELECT * FROM
(
  SELECT t1.b AS a
  FROM t1
  GROUP BY t1.a
) dt
WHERE (dt.a=2);
eval $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM
(
  SELECT t1.b AS a
  FROM t1
  GROUP BY t1.a
  HAVING (t1.a<3)
) dt
WHERE (dt.a>1);
eval $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM
(
  SELECT 'ab' AS a
  FROM t1
  GROUP BY t1.a
) dt
WHERE (dt.a='ab');
eval $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM
(
  SELECT 1 AS a
  FROM t1
  GROUP BY t1.a
) dt
WHERE (dt.a=1);
eval $query;
eval EXPLAIN FORMAT=JSON $query;

DROP TABLE t1;

--echo #
--echo # MDEV-16517: pushdown condition with the IN predicate defined
--echo #             with non-constant values
--echo #

CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (1,2),(1,3);

let $query=
SELECT * FROM
(
  SELECT t1.a
  FROM t1
  WHERE 1 IN (0,t1.a)
  GROUP BY t1.a
) AS dt1
JOIN
(
  SELECT t1.a
  FROM t1
  WHERE 1 IN (0,t1.a)
) AS dt2
ON dt1.a = dt2.a;
eval $query;
eval EXPLAIN FORMAT=JSON $query;

let $query=
SELECT * FROM
(
  SELECT t1.a,MAX(t1.b)
  FROM t1
  GROUP BY t1.a
) AS dt, t1
WHERE dt.a=t1.a AND dt.a IN (1,t1.a);
eval $query;
eval EXPLAIN FORMAT=JSON $query;
DROP TABLE t1;

--echo #
--echo # MDEV-15087: error from inexpensive subquery before check
--echo #                   for condition pushdown into derived
--echo #

CREATE TABLE t1 (i1 int, v1 varchar(1));
INSERT INTO t1 VALUES (7,'x');

CREATE TABLE t2 (i1 int);
INSERT INTO t2 VALUES (8);

CREATE TABLE t3 (i1 int ,v1 varchar(1), v2 varchar(1));
INSERT INTO t3 VALUES (4, 'v','v'),(62,'v','k'),(7, 'n', NULL);

--error ER_SUBQUERY_NO_1_ROW
SELECT 1
FROM (t1 AS a1
      JOIN (((SELECT  DISTINCT t3.*
              FROM t3) AS a2
             JOIN t1 ON (t1.v1 = a2.v2))) ON (t1.v1 = a2.v1))
WHERE (SELECT  BIT_COUNT(t2.i1)
       FROM (t2 JOIN t3)) IS NULL;

DROP TABLE t1, t2, t3;

--echo #
--echo # MDEV-16614 signal 7 after calling stored procedure, that uses regexp
--echo #

DELIMITER $$;
CREATE PROCEDURE p1(m1 varchar(5), m2 varchar(5))
BEGIN
SELECT a FROM
	(SELECT "aa" a) t
	JOIN (SELECT "aa" b) t1 on t.a=t1.b
WHERE t.a regexp m1 and t1.b regexp m2
GROUP BY a;
END$$
DELIMITER ;$$
CALL p1('a','a');
DROP PROCEDURE p1;


DELIMITER $$;
CREATE PROCEDURE p1(m1 varchar(5))
BEGIN
  SELECT a FROM (SELECT "aa" a) t WHERE t.a regexp m1;
END$$
DELIMITER ;$$
CALL p1('a');
DROP PROCEDURE p1;


SELECT a FROM (SELECT "aa" a) t WHERE REGEXP_INSTR(t.a, (SELECT MAX('aa') FROM DUAL LIMIT 1));


DELIMITER $$;
CREATE OR REPLACE FUNCTION f1(a VARCHAR(10), b VARCHAR(10)) RETURNS INT
BEGIN
  RETURN 1;
END;$$
CREATE OR REPLACE PROCEDURE p1(m1 varchar(5))
BEGIN
  SELECT a FROM (SELECT "aa" a) t WHERE f1(t.a, m1);
END$$
DELIMITER ;$$
CALL p1('a');
DROP PROCEDURE p1;
DROP FUNCTION f1;


DELIMITER $$;
CREATE OR REPLACE FUNCTION f1(a VARCHAR(10), b VARCHAR(10)) RETURNS INT
BEGIN
  RETURN 1;
END;$$
DELIMITER ;$$
SELECT a FROM (SELECT "aa" a) t WHERE f1(t.a, (SELECT MAX('aa') FROM DUAL LIMIT 1));
DROP FUNCTION f1;

--echo #
--echo # MDEV-17011: condition pushdown into materialized derived used
--echo #             in INSERT SELECT, multi-table UPDATE and DELETE
--echo #

CREATE TABLE t1 (a int ,b int) ENGINE=MyISAM;
INSERT INTO t1 VALUES
  (1, 1), (1, 2), (2, 1), (2, 2), (3,1), (3,3), (4,2);

CREATE TABLE t2 (a int) ENGINE MYISAM;
INSERT INTO t2 VALUES
  (3), (7), (1), (4), (1);

CREATE TABLE t3 (a int, b int) ENGINE MYISAM;

let $q1=
INSERT INTO t3
SELECT * FROM (SELECT a, count(*) as c FROM t1 GROUP BY a) t WHERE a<=2;

eval EXPLAIN FORMAT=JSON $q1;
eval $q1;

SELECT * FROM t3;

let $q2=
UPDATE t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t SET t2.a=t.c+10
  WHERE t2.a= t.c and t.a>=3;

eval EXPLAIN FORMAT=JSON $q2;
eval $q2;

SELECT * FROM t2;

let $q3=
DELETE t2 FROM t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t
  WHERE t2.a= t.c+9 and t.a=2;

eval EXPLAIN FORMAT=JSON $q3;
eval $q3;

SELECT * FROM t2;

DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-16765: pushdown condition with the CASE structure
--echo #             defined with Item_cond item
--echo #

CREATE TABLE t1(a INT, b INT);
INSERT INTO t1 VALUES (1,2), (3,4), (2,3);

LET $query=
SELECT *
FROM
(
  SELECT CASE WHEN ((tab2.max_a=1) OR (tab2.max_a=2))
    THEN 1 ELSE 0 END AS max_a,b
  FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
) AS tab1
WHERE (tab1.max_a=1);
EVAL $query;
EVAL EXPLAIN FORMAT=JSON $query;

LET $query=
SELECT *
FROM
(
  SELECT CASE WHEN ((tab2.max_a=1) OR ((tab2.max_a>2) AND (tab2.max_a<4)))
    THEN 1 ELSE 0 END AS max_a,b
  FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
) AS tab1
WHERE (tab1.max_a=1);
EVAL $query;
EVAL EXPLAIN FORMAT=JSON $query;

LET $query=
SELECT *
FROM
(
  SELECT CASE WHEN ((tab2.max_a>1) AND ((tab2.max_a=2) OR (tab2.max_a>2)))
    THEN 1 ELSE 0 END AS max_a,b
  FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
) AS tab1
WHERE (tab1.max_a=1);
EVAL $query;
EVAL EXPLAIN FORMAT=JSON $query;

LET $query=
SELECT *
FROM
(
  SELECT CASE WHEN ((tab2.b=2) OR (tab2.b=4))
    THEN 1 ELSE 0 END AS max_a,b
  FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
) AS tab1
WHERE (tab1.max_a=1);
EVAL $query;
EVAL EXPLAIN FORMAT=JSON $query;

DROP TABLE t1;

--echo #
--echo # MDEV-16803: pushdown condition with IN predicate in the derived table
--echo #             defined with several SELECT statements
--echo #

CREATE TABLE t1 (a INT, b INT);
INSERT INTO t1 VALUES (1,2),(3,2),(1,1);

SELECT * FROM
(
  SELECT a,b,1 as c
  FROM t1
  UNION ALL
  SELECT a,b,2 as c
  FROM t1
) AS tab
WHERE ((a,b) IN ((1,2),(3,2)));

DROP TABLE t1;

--echo #
--echo # MDEV-17354: INSERT SELECT with condition pushdown into derived
--echo #

CREATE TABLE t1 (f INT NOT NULL);
INSERT INTO t1 VALUES (3), (7), (3);

CREATE ALGORITHM= TEMPTABLE VIEW v1 AS SELECT * FROM ( SELECT * FROM t1 ) AS sq;

let $q1=
INSERT INTO t1
SELECT * FROM ( SELECT t1.f FROM v1 JOIN t1 ) AS t WHERE f IS NOT NULL;

eval $q1;
eval EXPLAIN $q1;
eval EXPLAIN FORMAT=JSON $q1;
SELECT * FROM t1;

DELETE FROM t1;
INSERT INTO t1 VALUES (3), (7), (3);

let $q2=
INSERT INTO t1
SELECT * FROM ( SELECT t1.f FROM v1 JOIN t1 ON v1.f=t1.f) AS t
  WHERE f IS NOT NULL;

eval $q2;
eval EXPLAIN FORMAT=JSON $q2;
SELECT * FROM t1;

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-17574: pushdown into derived from mergeable view
--echo #             used in multi-table UPDATE
--echo #             pushdown into materialized derived from mergeable view
--echo #             used in SELECT
--echo #

CREATE TABLE t1 (f1 text, f2 int);
INSERT INTO t1 VALUES ('x',1), ('y',2);

CREATE VIEW v1 AS SELECT f2 FROM ( SELECT f2 FROM t1 ) AS t;
let $q1 =
UPDATE v1, t1 SET t1.f1 = 'z' WHERE v1.f2 < 2 AND t1.f2 = v1.f2;
eval $q1;
eval EXPLAIN FORMAT=JSON $q1;

SELECT * FROM t1;

CREATE VIEW v2 AS SELECT f2 FROM ( SELECT DISTINCT f2 FROM t1 ) AS t;
let $q2 =
SELECT * FROM v2, t1 WHERE v2.f2 < 2 AND t1.f2 = v2.f2;
eval $q2;
eval EXPLAIN FORMAT=JSON $q2;

DROP VIEW v1,v2;
DROP TABLE t1;

--echo #
--echo # MDEV-18383: pushdown condition with the IF structure
--echo #             defined with Item_cond item
--echo #

CREATE TABLE t1(a INT, b INT);
CREATE TABLE t2(c INT, d INT);
INSERT INTO t1 VALUES (1,2),(3,4),(5,6);
INSERT INTO t2 VALUES (1,3),(3,7),(5,1);

SELECT *
FROM t1,
(
  SELECT MAX(d) AS max_d,c
  FROM t2
  GROUP BY c
) AS tab
WHERE t1.a=tab.c AND
      IF(2,t1.a=1 OR t1.b>5,1=1);

DROP TABLE t1,t2;

--echo #
--echo # MDEV-19139: pushdown condition with Item_func_set_user_var
--echo #

CREATE TABLE t1 (a INT, b INT);
CREATE VIEW v1 AS SELECT a, MAX(b) FROM t1 GROUP BY a;

SELECT * FROM (SELECT 1 FROM v1 UNION (SELECT 1 FROM v1 WHERE @a := uuid())) dt;
EXPLAIN FORMAT=JSON
SELECT * FROM (SELECT 1 FROM v1 UNION (SELECT 1 FROM v1 WHERE @a := uuid())) dt;

DROP TABLE t1;
DROP VIEW v1;

--echo #
--echo # MDEV-21388 Wrong result of DAYNAME()=xxx in combination with condition_pushdown_for_derived=on
--echo #

CREATE TABLE t1 (a INT, b DATE, c INT);
INSERT INTO t1 VALUES
  (1,'2001-01-21',345),
  (6,'2001-01-20',315),
  (6,'2001-01-20',214);

CREATE TABLE t2 (a INT, b INT);
INSERT INTO t2 VALUES (2,19), (7,20);
CREATE VIEW v1 AS SELECT a, b, max(c) AS max_c FROM t1
  GROUP BY a,b HAVING max_c < 707;

SELECT *, dayname(v1.b) FROM v1,t2 WHERE (v1.max_c>214) AND (t2.a>v1.a);

SET optimizer_switch='condition_pushdown_for_derived=off';
SELECT *, dayname(v1.b) FROM v1,t2 WHERE (v1.max_c>214) AND (t2.a>v1.a) AND dayname(v1.b)='Sunday';

SET optimizer_switch='condition_pushdown_for_derived=on';
SELECT *, dayname(v1.b) FROM v1,t2 WHERE (v1.max_c>214) AND (t2.a>v1.a) AND dayname(v1.b)='Sunday';

DROP VIEW v1;
DROP TABLE t1, t2;

SET optimizer_switch=DEFAULT;



--echo #
--echo # MDEV-17177: an attempt to push down IN predicate when one of
--echo #             the arguments is too complex to be cloned
--echo #

CREATE TABLE t1 (a VARCHAR(8));
INSERT INTO t1 VALUES ('abc'),('def');
CREATE VIEW v1 AS SELECT * FROM t1 GROUP BY a;

SELECT * FROM v1 WHERE IF( a REGEXP 'def', 'foo', a ) IN ('abc', 'foobar');

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-19179: pushdown into UNION of aggregation selects whose
--echo #             corresponding columns have different names
--echo #

create table t1 (a int);
insert into t1 values (3), (7), (1);

let $q=
select *
from (select min(a) as x from t1 union all select max(a) as y from t1) t
where x>0;

eval $q;
eval explain extended $q;

eval prepare stmt from "$q";
execute stmt;
execute stmt;
deallocate prepare stmt;

create view v1(m) as
select min(a) as x from t1 union all select max(a) as y from t1;
select * from v1 where m > 0;

drop view v1;
drop table t1;

--echo #
--echo # MDEV-25635: pushdown into grouping view using aggregate functions
--echo #             with constant arguments via a mergeable derived table
--echo #

create table t1 (a int);
insert into t1 values (3), (7), (1), (3), (7), (7), (3);

create view v1 as select a, sum(1) as f, sum(1) as g from t1 group by a;
select * from v1;
let $q1=
select * from (select * from v1) as dt where a=f and a=g;
eval $q1;
eval explain extended $q1;

create view v2 as select a, min(1) as f, min(1) as g from t1 group by a;
select * from v2;
let $q2=
select * from (select * from v2) as dt where a=f and a=g;
eval $q2;
eval explain extended $q2;

drop view v1,v2;
drop table t1;

--echo #
--echo # MDEV-25969: Condition pushdown into derived table doesn't work if select list uses SP
--echo #
create function f1(a int) returns int DETERMINISTIC return (a+1);

create table t1 (
  pk int primary key,
  a int,
  b int,
  key(a)
);

create table t2(a int);
insert into t2 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);

create table t3(a int);
insert into t3 select A.a + B.a* 10 + C.a * 100 from t2 A, t2 B, t2 C;

insert into t1 select a,a,a from t3;

create view v1 as
select
  t1.a as col1,
  f1(t1.b) as col2
from
  t1;

create view v2 as
select
  t1.a as col1,
  f1(t1.b) as col2
from
  t1;
create view v3 as
select col2, col1 from v1
union all
select col2, col1 from v2;

explain select * from v3 where col1=123;

--echo # This must use ref accesses for reading table t1, not full scans:
explain format=json
select * from v3 where col1=123 and col2=321;

drop function f1;
drop view v1,v2,v3;
drop table t1, t2,t3;

--echo #
--echo # Another testcase, with pushdown through GROUP BY
--echo #
create table t1 (a int, b  int);
insert into t1 values (1,1),(2,2),(3,3);

create function f1(a int) returns int DETERMINISTIC return (a+1);

create view v2(a, a2, s) as 
select a, f1(a), sum(b) from t1 group by a, f1(a);

--echo # Here, 
--echo #   "(s+1) > 10" will be pushed into HAVING
--echo #   "a > 1" will be pushed all the way to the table scan on t1
--echo #   "a2>123" will be pushed into HAVING (as it refers to an SP call which
--echo #                                       prevents pushing it to the WHERE)
explain format=json
select * from v2 where (s+1) > 10 AND a > 1 and a2>123;

--echo # Extra test for 10.4+: Check that this works for pushdown into IN
--echo # subqueries:

create table t4 (a int, b int, c decimal);
insert into t4 select a,a,a from t1;

--echo # The subquery must be materialized and must have
--echo #  "attached_condition": "t1.a + 1 > 10",
--echo #  "having_condition": "`f1(a)` > 1 and `sum(b)` > 123",
explain format=json
select *
from t4
where
  (a,b,c) in (select a, f1(a), sum(b) from t1 group by a, f1(a))
  and
   (a+1) > 10 AND b > 1 and c>123;

drop view v2;
drop function f1;
drop table t1, t4;
--echo # End of 10.2 tests

--echo #
--echo # MDEV-14579: pushdown conditions into materialized views/derived tables
--echo # that are defined with EXIST or/and INTERSECT
--echo #

create table t1 (a int, b int, c int);
create table t2 (a int, b int, c int);

insert into t1 values
  (1,21,345), (1,33,7), (8,33,114), (1,21,500), (1,19,117), (5,14,787),
  (8,33,123), (9,10,211), (5,16,207), (1,33,988), (5,27,132), (1,21,104),
  (6,20,309), (6,20,315), (1,21,101), (4,33,404), (9,10,800), (1,21,123);

insert into t2 values
  (2,3,207), (1,16,909), (5,14,312),
  (5,33,207), (6,20,211), (1,19,132),
  (8,33,117), (3,21,231), (6,23,303);

create view v1 as
  select a, b, min(c) as c from t1
  where t1.a<9 group by a,b having c < 300
  intersect
  select a, b, min(c) as c from t1
  where t1.b>10 group by a,b having c > 100;

--echo # using intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushing equalities
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a=8);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE using equalities
let $query= select * from v1,t2 where (v1.a=t2.a) and (t2.a=8);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # conjunctive subformulas : pushing into HAVING
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.c>200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # extracted or formula : pushing into WHERE
let $query=
  select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # extracted or formula : pushing into HAVING
let $query=
  select * from v1,t2 where
    (v1.a=t2.a) and ((v1.c>200) or (v1.c<105));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # extracted or formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
--echo # pushing equalities
let $query=
  select * from v1,t2 where
    ((v1.a>3) and (t2.c>110) and (v1.c=t2.c)) or
    ((v1.a=1) and (v1.c<110));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using intersect in view definition
--echo # prepare of a query
--echo # conjunctive subformulas : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
prepare stmt from "select * from v1,t2
                   where (v1.a=t2.a) and (v1.a<5) and (v1.c>110);";
execute stmt;
execute stmt;
deallocate prepare stmt;

--echo # using intersect in derived table definition
--echo # extracted or formula : pushing into WHERE using equalities
--echo # extracted or formula : pushing into HAVING
--echo # pushing equalities
let $query=
  select *
  from t2,
      (select a, b, min(c) as c from t1
       where t1.a<9 group by a,b having c < 300
       intersect
       select a, b, min(c) as c from t1
       where t1.b>10 group by a,b having c > 100) as d1
  where
  (d1.b=t2.b) and
  (((t2.b>13) and (t2.c=909)) or
  ((d1.a<4) and (d1.c<200)));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

create view v1 as
  select a, b, max(c) as c from t1
  where t1.a<9 group by a,b having c > 200
  except
  select a, b, max(c) as c from t1
  where t1.b>10 group by a,b having c < 300;

--echo # using except in view definition
--echo # conjunctive subformulas : pushing into WHERE
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a<5);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushing equalities
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a=6);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # conjunctive subformulas : pushing into WHERE using equalities
let $query= select * from v1,t2 where (v1.a=t2.a) and (t2.a=6);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # conjunctive subformulas : pushing into HAVING
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.c>500);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # extracted or formula : pushing into WHERE
let $query=
  select * from v1,t2 where (v1.a=t2.a) and ((v1.b>27) or (v1.b<19));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # extracted or formula : pushing into HAVING
let $query=
  select * from v1,t2 where
    (v1.a=t2.a) and ((v1.c<400) or (v1.c>800));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # extracted or formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING using equalities
--echo # pushing equalities
let $query=
  select * from v1,t2 where
    (v1.c=t2.c) and
    ((v1.a>1) and (t2.c<500)) or
    ((v1.a=1) and (v1.c>500));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

--echo # using except in view definition
--echo # prepare of a query
--echo # conjunctive subformulas : pushing into WHERE
--echo # conjunctive subformulas : pushing into HAVING
prepare stmt from "select * from v1,t2
                   where (v1.a=t2.a) and (v1.a<5) and (v1.c>500);";
execute stmt;
execute stmt;
deallocate prepare stmt;

--echo # using except in view definition
--echo # extracted or formula : pushing into WHERE using equalities
--echo # extracted or formula : pushing into HAVING
--echo # pushing equalities
let $query=
  select *
  from t2,
      (select a, b, max(c) as c from t1
       where t1.a<9 group by a,b having c > 200
       except
       select a, b, max(c) as c from t1
       where t1.b>10 group by a,b having c < 300) as d1
  where
  (d1.b=t2.b) and
  (((t2.b>13) and (t2.c=988)) or
  ((d1.a>4) and (d1.c>500)));
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union and intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, min(c) as c from t1
    where t1.a<9 group by a,b having c > 200
  union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  intersect
  select a, b, max(c) as c from t1
    where t1.a>3 group by a,b having c < 530;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union and intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, min(c) as c from t1
    where t1.a<9 group by a,b having c > 200
  intersect
  select a, b, max(c) as c from t1
    where t1.a>3 group by a,b having c < 500
  union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union and except in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, min(c) as c from t1
    where t1.a<9 group by a,b having c > 200
  union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  except
  select a, b, max(c) as c from t1
    where t1.a>3 group by a,b having c < 530;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>5) and (v1.c>200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union and except in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, min(c) as c from t1
    where t1.a<9 group by a,b having c > 200
  except
  select a, b, max(c) as c from t1
    where t1.a>3 group by a,b having c < 500
  union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<200);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using except and intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  intersect
  select a, b, max(c) as c from t1
    where t1.a<7 group by a,b having c < 500
  except
  select a, b, max(c) as c from t1
    where t1.a<9 group by a,b having c > 150;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<150);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using except and intersect in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  except
  select a, b, max(c) as c from t1
    where t1.a<9 group by a,b having c > 150
  intersect
  select a, b, max(c) as c from t1
    where t1.a<7 group by a,b having c < 500;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using except, intersect and union in view definition
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  except
  select a, b, max(c) as c from t1
    where t1.a<9 group by a,b having c > 150
  intersect
  select a, b, max(c) as c from t1
    where t1.a<7 group by a,b having c < 500
  union
  select a, b, max(c) as c from t1
    where t1.a<7 group by a,b having c < 120;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.c<130);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using intersect in view definition
--echo # using embedded view
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  intersect
  select a, b, max(c) as c from t1
    where t1.a<9 group by a,b having c > 120;

create view v2 as
  select a, b, max(c) as c from v1
    where v1.a<7 group by a,b;

let $query= select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1,v2;

--echo # using except in view definition
--echo # using embedded view
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c < 300
  except
  select a, b, max(c) as c from t1
    where t1.a<9 group by a,b having c > 150;

create view v2 as
  select a, b, max(c) as c from v1
    where v1.a<7 group by a,b;

let $query= select * from v2,t2 where (v2.a=t2.a) and (v2.a>4) and (v2.c<150);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1,v2;

--echo # using intersect in view definition
--echo # conditions are pushed in different parts of selects
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.a<9 group by a having c > 300
  intersect
  select a, b, max(c) as c from t1
    where t1.b<21 group by b having c > 200;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>4) and (v1.b>12) and (v1.c<450);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using except in view definition
--echo # conditions are pushed in different parts of selects
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>20 group by a having c > 300
  except
  select a, b, max(c) as c from t1
    where t1.a<7 group by b having c > 150;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a<2) and (v1.b<30) and (v1.c>450);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using except and union in view definition
--echo # conditions are pushed in different parts of selects
--echo # conjunctive subformulas : pushing into HAVING
--echo # extracted or formula : pushing into WHERE
--echo # extracted or formula : pushing into HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.b>20 group by a having c > 300
  except
  select a, b, max(c) as c from t1
    where t1.a<7 group by b having c > 150;

let $query= select * from v1,t2 where (v1.a=t2.a) and ((v1.a<2) or (v1.a<5)) and (v1.c>450);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union and intersect in view definition
--echo # conditions are pushed in different parts of selects
--echo # conjunctive subformulas : pushing into WHERE and HAVING
create view v1 as
  select a, b, max(c) as c from t1
    where t1.a<9 group by a having c > 100
  intersect
  select a, b, max(c) as c from t1
    where t1.a>3 group by b having c < 800
  union
  select a, b, max(c) as c from t1
    where t1.b>10 group by a,b having c > 300;

let $query= select * from v1,t2 where (v1.a=t2.a) and (v1.a>1) and (v1.b > 12) and (v1.c>400);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

create table t3 (a int, b int, c int);
insert into t3 values
  (1,21,345), (2,33,7), (8,33,114), (3,21,500), (1,19,107), (5,14,787),
  (4,33,123), (9,10,211), (11,16,207), (10,33,988), (5,27,132), (12,21,104),
  (6,20,309), (16,20,315), (16,21,101), (18,33,404), (19,10,800), (10,21,123),
  (17,11,708), (6,20,214);

create index i1 on t3(a);

--echo # conjunctive subformulas : pushing into WHERE
--echo # pushed condition gives range access
create view v1 as
  select a, b, max(c) as max_c from t3
    where a>0 group by a;

let $query= select * from v1,t2 where (v1.b=t2.b) and (v1.a<5);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushed condition gives range access
create view v1 as
  select a, b, max(c) as c from t3
    where t3.a>1 group by a
  union
  select a, b, max(c) as c from t3
    where t3.a>2 group by a;

let $query= select * from v1,t2 where (v1.b=t2.b) and (v1.a<4);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

--echo # using union in view definition
--echo # conjunctive subformulas : pushing into WHERE
--echo # pushed condition gives range access in one of the selects
create view v1 as
  select a, b, max(c) as c from t3
    where t3.a>1 group by a
  union
  select a, b, max(c) as c from t3
    where t3.b<21 group by b;

let $query= select * from v1,t2 where (v1.b=t2.b) and (v1.a<3);
eval $no_pushdown $query;
eval $query;
eval explain $query;
eval explain format=json $query;

drop view v1;

alter table t3 drop index i1;

drop table t1,t2,t3;

--echo #
--echo # MDEV-10855: Pushdown into derived with window functions
--echo #

set @save_optimizer_switch= @@optimizer_switch;
set optimizer_switch='split_materialized=off';

create table t1 (a int, c varchar(16));
insert into t1 values
(8,'aa'), (5,'cc'), (1,'bb'), (2,'aa'), (9,'cc'),
(7,'aa'), (2,'aa'), (7,'bb');

create table t2 (a int, b int, c varchar(16), index idx(a,c));
insert into t2 values
  (7,10,'cc'), (1,20,'aa'), (2,23,'bb'), (7,18,'cc'), (1,30,'bb'),
  (4,71,'xx'), (3,15,'aa'), (7,82,'bb'), (8,12,'dd'), (4,15,'aa'),
  (11,33,'yy'), (10,42,'zz'), (4,53,'xx'), (10,17,'yy'), (7,12,'bb'),
  (8,20,'dd'), (7,32,'bb'), (1,50,'aa'), (3,40,'bb'), (3,77,'aa');

let $q1=
select * from (select a, c, sum(b) over (partition by a,c) from t2) as t
  where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q1;
--sorted_result
eval $q1;
eval explain $q1;
eval explain format=json $q1;

let $q2=
select * from
(
  select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
  union all
  select 2 as n, a, c, sum(b) over (partition by a) as s from t2
) as t
where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q2;
--sorted_result
eval $q2;
eval explain $q2;
eval explain format=json $q2;

let $q3=
select *
from (select a, c, sum(b) over (partition by a,c) as s from t2) as t, t1
  where t1.a=t.a and t1.c=t.c and t1.c in ('aa','bb','cc');

eval $no_pushdown $q3;
eval $q3;
eval explain $q3;
eval explain format=json $q3;

let $q4=
select * from
(
  select 1 as n, a, c, sum(b) over (partition by a,c) as s from t2
  union all
  select 2 as n, a, c, sum(b) over (partition by a) as s from t2
  union all
  select 3 as n, a, c, sum(b) as s from t2 group by a
) as t
where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q4;
--sorted_result
eval $q4;
eval explain $q4;
eval explain format=json $q4;

let $q5=
select * from (select a, c,
                      sum(b) over (partition by a,c) as sum_b,
                      avg(b) over (partition by a,c) as avg_b
               from t2 ) as t
  where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q5;
--sorted_result
eval $q5;
eval explain $q5;
eval explain format=json $q5;

let $q6=
select * from (select a, c,
                      sum(b) over (partition by a,c) as sum_b,
                      avg(b) over (partition by a) as avg_b
               from t2 ) as t
  where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q6;
--sorted_result
eval $q6;
eval explain $q6;
eval explain format=json $q6;

let $q7=
select * from (select a, c,
                      sum(b) over (partition by a,c) as sum_b,
                      avg(b) over (partition by c) as avg_b
               from t2 ) as t
  where t.a > 2 and t.c in ('aa','bb','cc');

--sorted_result
eval $no_pushdown $q7;
--sorted_result
eval $q7;
eval explain $q7;
eval explain format=json $q7;

drop table t1,t2;

set optimizer_switch= @save_optimizer_switch;

--echo #
--echo # MDEV-13369: Optimization for equi-joins of grouping derived tables
--echo #             (Splitting derived tables / views with GROUP BY)
--echo # MDEV-13389: Optimization for equi-joins of derived tables with WF
--echo #             (Splitting derived tables / views with window functions)
--echo #

let
$no_splitting= set statement optimizer_switch='split_materialized=off' for;

create table t1 (a int, b int, index idx_b(b)) engine=myisam;
insert into t1 values
(8,3), (5,7), (1,2), (2,1), (9,7), (7,5), (2,2), (7,3),
(9,3), (8,1), (4,5), (2,3);

create table t2 (a int, b int, c char(127), index idx_a(a)) engine=myisam;
insert into t2 values
  (7,10,'x'), (1,20,'a'), (2,23,'b'), (7,18,'z'), (1,30,'c'),
  (4,71,'d'), (3,15,'x'), (7,82,'y'), (8,12,'t'), (4,15,'b'),
  (11,33,'a'), (10,42,'u'), (4,53,'p'), (10,17,'r'), (2,90,'x'),
  (17,10,'s'), (11,20,'v'), (12,23,'y'), (17,18,'a'), (11,30,'d'),
  (24,71,'h'), (23,15,'i'), (27,82,'k'), (28,12,'p'), (24,15,'q'),
  (31,33,'f'), (30,42,'h'), (40,53,'m'), (30,17,'o'), (21,90,'b'),
  (37,10,'e'), (31,20,'g'), (32,23,'f'), (37,18,'n'), (41,30,'l'),
  (54,71,'j'), (53,15,'w'), (57,82,'z'), (58,12,'k'), (54,15,'p'),
  (61,33,'c'), (60,42,'a'), (62,53,'x'), (67,17,'g'), (64,90,'v');

insert into t2 select a+10, b+10, concat(c,'f') from t2;

analyze table t1,t2;

let $q1=
select t1.a,t.s,t.m
from t1 join
     (select a, sum(t2.b) as s, min(t2.c) as m from t2 group by t2.a) t
     on t1.a=t.a
where t1.b < 3;

eval $no_splitting $q1;
eval $q1;
eval explain extended $q1;
eval explain format=json $q1;
eval prepare stmt from "$q1";
execute stmt;
execute stmt;
deallocate prepare stmt;

let $q10=
select t1.a,t.s,t.m
from t1 join
     (select a, sum(t2.b) as s, min(t2.b) as m from t2 group by t2.a) t
     on t1.a=t.a
where t1.b <= 5;

eval $no_splitting $q10;
eval $q10;
eval explain extended $q10;
eval explain format=json $q10;
eval prepare stmt from "$q10";
execute stmt;
execute stmt;
deallocate prepare stmt;

delete from t1 where t1.b between 2 and 5;

let $q2=
select t1.a,t.max,t.min
from t1 left join
     (select a, max(t2.b) max, min(t2.b) min from t2 group by t2.a) t
     on t1.a=t.a;

eval $no_splitting $q2;
eval $q2;
eval explain extended $q2;
eval explain format=json $q2;

create table t3 (a int, b int, c char(127), index idx_b(b)) engine=myisam;
insert into t3 values
(8,11,'aa'), (5,15,'cc'), (1,14,'bb'), (2,12,'aa'), (7,17,'cc'),
(7,18,'aa'), (2,11,'aa'), (7,10,'bb'), (3,11,'dd'), (4,12,'ee'),
(5,14,'dd'), (9,12,'ee');

create table t4 (a int, b int, c char(127), index idx(a,c)) engine=myisam;
insert into t4 values
  (7,10,'cc'), (1,20,'aa'), (2,23,'bb'), (7,18,'cc'), (1,30,'bb'),
  (4,71,'xx'), (3,15,'aa'), (7,82,'aa'), (8,12,'dd'), (4,15,'aa'),
  (11,33,'yy'), (10,42,'zz'), (4,53,'xx'), (10,17,'yy'), (7,12,'cc'),
  (8,20,'dd'), (7,32,'bb'), (1,50,'aa'), (3,40,'bb'), (3,77,'aa');

insert into t4 select a+10, b+10, concat(c,'f') from t4;

analyze table t3,t4;

let $q3=
select t3.a,t3.c,t.max,t.min
from t3 join
     (select a, c, max(b) max, min(b) min from t4 group by a,c) t
     on t3.a=t.a and t3.c=t.c
where t3.b > 15;

eval $no_splitting $q3;
eval $q3;
eval explain extended $q3;
eval explain format=json $q3;

let $q30=
select t3.a,t3.c,t.max,t.min
from t3 join
     (select a, c, max(b) max, min(b) min from t4 group by a,c) t
     on t3.a=t.a and t3.c=t.c
where t3.b <= 15;

eval $no_splitting $q30;
eval $q30;
eval explain extended $q30;
eval explain format=json $q30;

let $q4=
select t3.a,t3.c,t.max,t.min
from t3 join
     (select a, c, max(b) max, min(b) min from t4 group by c,a) t
     on t3.a=t.a and t3.c=t.c
where t3.b > 15;

eval $no_splitting $q4;
eval $q4;
eval explain extended $q4;
eval explain format=json $q4;

let $q40=
select t3.a,t3.c,t.max,t.min
from t3 join
     (select a, c, max(b) max, min(b) min from t4 group by c,a) t
     on t3.a=t.a and t3.c=t.c
where t3.b <= 15;

eval $no_splitting $q40;
eval $q40;
eval explain extended $q40;
eval explain format=json $q40;

drop index idx_a on t2;
create index idx on t2(c,b);
create index idx_a on t3(a);
create index idx_c on t4(c);
insert into t3 select a+10, b+10, concat(c,'f') from t3;
insert into t3 select a+100, b+100, concat(c,'g')  from t3;
insert into t4 select a+100, b+100, concat(c,'g') from t4;
insert into t4 select a+1000, b+1000, concat(c,'h') from t4;

analyze table t2,t3,t4;

let $q5=
select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;

--sorted_result
eval $no_splitting $q5;
--sorted_result
eval $q5;
eval explain extended $q5;
eval explain format=json $q5;

let $q50=
select t2.a,t2.b,t2.c,t.c as t_c,t.max,t.min
from t2, t3, (select c, max(b) max, min(b) min from t4 group by c) t
where t2.b < 40 and t2.a=t3.a and t3.c=t.c;

eval $no_splitting $q50;
eval $q50;
eval explain extended $q50;
eval explain format=json $q50;

let $q6=
select *
from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
where t2.b between 80 and 85 and t2.c in ('y','z') and t2.a=t3.a and t3.c=t.c;

--sorted_result
eval $no_splitting $q6;
--sorted_result
eval $q6;
eval explain extended $q6;
eval explain format=json $q6;

let $q60=
select *
from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
where t2.b < 40 and t2.a=t3.a and t3.c=t.c;

--sorted_result
eval $no_splitting $q60;
--sorted_result
eval $q60;
eval explain extended $q60;
eval explain format=json $q60;

drop table t1,t2,t3,t4;

--echo #
--echo # MDEV-13709: Optimization for semi-joins of grouping derived tables
--echo #             (Splitting derived tables / views with GROUP BY)
--echo #

CREATE TABLE t1 (i int);
INSERT INTO t1 VALUES (1),(9),(3);

CREATE TABLE t2 (a int, i int);
INSERT INTO t2 VALUES (1,9),(2,3),(3,7),(4,1);

CREATE TABLE t3 (a int, c char(127), index(c));
INSERT INTO t3 VALUES (1,'foo'),(3,'bar'),(4,'foo'),(2,'bar');
INSERT INTO t3 SELECT a, concat(c,'a') FROM t3;

CREATE TABLE t4 (a int, c char(127), index(a));
INSERT INTO t4 VALUES
  (3,'abc'),(1,'foo'),(4,'def'),(8,'xxx'),(3,'yyy'),
  (5,'zzz'),(9,'xyz'),(2,'yxz'),(5,'zxy'),(7,'zyx') ;

ANALYZE TABLE t1,t2,t3,t4;

CREATE VIEW v1 AS
SELECT c FROM t3
  WHERE a IN ( SELECT t2.a FROM t1 JOIN t2 WHERE t1.i = t2.i ) GROUP BY c ;

let $q1=
SELECT * FROM t4 WHERE c IN ( SELECT c FROM v1 ) and a < 2;

eval $no_splitting $q1;
eval $q1;
eval explain extended $q1;
eval explain format=json $q1;

DROP VIEW v1;
DROP TABLE t1,t2,t3,t4;

--echo #
--echo # MDEV-13710: Optimization for equi-joins of grouping derived tables
--echo #             (Splitting derived tables / views with GROUP BY) :
--echo #             FROM list of the derived table contains constant tables
--echo #

CREATE TABLE t1 (a int, INDEX(a)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (9),(5),(1);

CREATE TABLE t2 (b int) ENGINE=MyISAM;

CREATE TABLE t3 (c varchar(8), d int) ENGINE=MyISAM;
INSERT INTO t3 VALUES ('foo',2),('bar',6);

CREATE VIEW v1 AS SELECT a FROM t1, t2 GROUP BY a;

SELECT * FROM t3
  WHERE d IN ( SELECT * FROM v1 ) AND c LIKE 'z%' OR c IS NULL;

DROP VIEW v1;
DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-13734: Optimization for equi-joins of grouping derived tables
--echo #             (Splitting derived tables / views with GROUP BY) :
--echo #             derived table / view is empty
--echo #

CREATE TABLE t1 (a int, b int, INDEX(a)) ENGINE=MyISAM;
CREATE TABLE t2 (c int) ENGINE=MyISAM;

CREATE VIEW v1 AS SELECT a, b FROM t1 STRAIGHT_JOIN t2;
CREATE VIEW v2 AS SELECT a, max(b) as bmax FROM v1 GROUP BY a;
CREATE VIEW v3 AS SELECT v2.* FROM t1 JOIN v2 ON t1.b = v2.bmax ;

SELECT * FROM v3 JOIN t1 ON (bmax = b);

DROP VIEW v1,v2,v3;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-14845: Impossible where for derived with GROUP BY
--echo #

CREATE TABLE t1 (pk INT PRIMARY KEY);

INSERT INTO t1 VALUES (1),(2);

let $q=
WITH cte AS ( SELECT pk FROM t1 WHERE pk IS NULL GROUP BY pk )
SELECT * FROM cte;

eval $q;
eval EXPLAIN EXTENDED $q;

DROP TABLE t1;

--echo #
--echo # MDEV-14880: assertion failure in optimizer when splitting is applied
--echo #

CREATE TABLE t1 (pk1 INT PRIMARY KEY, f INT) ENGINE=Aria;
INSERT INTO t1 VALUES (1,0),(2,0);

CREATE TABLE t2 (pk2 INT PRIMARY KEY) ENGINE=Aria;
INSERT INTO t2 VALUES (1),(2),(3);

CREATE VIEW v2 AS SELECT pk2, COUNT(*) AS cnt FROM t2 GROUP BY pk2;

let $q=
SELECT * FROM t1 INNER JOIN v2 ON pk1 = pk2 WHERE f <> 5;

eval $q;
eval EXPLAIN EXTENDED $q;
eval EXPLAIN FORMAT=JSON $q;

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-15017: splittable table is constant table
--echo #

CREATE TABLE t1 (a INT) ENGINE=MyISAM;

CREATE TABLE t2 (pk INT, b INT, PRIMARY KEY (pk)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,2),(3,4);

CREATE VIEW v2 AS SELECT pk, MIN(b) FROM t2 GROUP BY pk;

SELECT * FROM t1 LEFT JOIN v2 ON (a = pk);

DROP VIEW v2;
DROP TABLE t1,t2;

--echo #
--echo # MDEV-14994: splittable table with no rows
--echo #

CREATE TABLE t1 (f INT PRIMARY KEY) ENGINE=MyISAM;
CREATE VIEW v1 AS SELECT a.* FROM t1 AS a STRAIGHT_JOIN t1 AS b;
CREATE VIEW v2 AS SELECT f FROM v1 GROUP BY f;

SELECT * FROM v1 JOIN v2 ON v1.f = v2.f;
EXPLAIN EXTENDED
SELECT * FROM v1 JOIN v2 ON v1.f = v2.f;

DROP VIEW v1,v2;
DROP TABLE t1;

--echo #
--echo # MDEV-15899: derived with WF without any key access
--echo #

create table t1 (f1 int, f2 int, f4 int);
insert into t1 values
  (3,1,1), (3,0,9), (0,1,8), (9,0,0), (3,0,9);

let $q=
with
cte as (select  median(f2) over (partition by f1) as k1 from t1 order by f1),
cte1 as (select median(f4) over (partition by f1) as k2 from t1)
select k1,k2 from cte1, cte;

--sorted_result
eval $q;
eval explain $q;

drop table t1;

--echo #
--echo # MDEV-16104: embedded splittable materialized derived/views
--echo #

CREATE TABLE t1 (f int PRIMARY KEY) ENGINE=MyISAM;
INSERT INTO t1
  VALUES (3), (7), (1), (4), (8), (5), (9);

CREATE ALGORITHM=MERGE VIEW v1 AS
SELECT a2.*
FROM
  ( SELECT f, COUNT(*) as c FROM t1 GROUP BY f ) AS a1
  JOIN
  t1 AS a2
  USING (f);

EXPLAIN EXTENDED
SELECT * FROM ( SELECT STRAIGHT_JOIN f, COUNT(*) as c FROM v1 GROUP BY f ) AS s;
SELECT * FROM ( SELECT STRAIGHT_JOIN f, COUNT(*) as c FROM v1 GROUP BY f ) AS s;

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-16801: splittable materialized derived/views with
--echo #             one grouping field from table without keys
--echo #

CREATE TABLE t1 (a int, b int, INDEX idx_a(a), INDEX idx_b(b)) ENGINE=MYISAM;
CREATE TABLE t2 (c int) ENGINE=MYISAM;
CREATE TABLE t3 (d int) ENGINE=MYISAM;
INSERT INTO t1 VALUES
  (77,7), (11,1), (33,3), (44,4), (8,88),
  (78,7), (98,9), (38,3), (28,2), (79,7),
  (58,5), (42,4), (71,7), (27,2), (91,9);
INSERT INTO t1 SELECT a+100, b+10 FROM t1;
INSERT INTO t2 VALUES
  (100), (700), (200), (100), (200);
INSERT INTO t3 VALUES
  (3), (4), (1), (8), (3);

ANALYZE tables t1,t2,t3;

let $q=
SELECT *
  FROM t3,
       (SELECT t1.b, t2.c
          FROM  t1, t2
            GROUP BY t1.b,t2.c) dt
WHERE t3.d = dt.b;

eval $q;
eval EXPLAIN EXTENDED $q;

DROP TABLE t1,t2,t3;

--echo #
--echo # MDEV-17419: splittable materialized derived/view
--echo #             when join_cache_level = 4
--echo #

set join_cache_level = 4;

CREATE TABLE t1 (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  username VARCHAR(50) NULL DEFAULT '0',
  PRIMARY KEY (id)
) COLLATE='utf8_general_ci';

CREATE TABLE t2 (
  id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  userid INT UNSIGNED NOT NULL,
  logindate DATETIME NOT NULL,
  PRIMARY KEY (id)
) COLLATE='utf8_general_ci';

INSERT INTO t1 (id, username) VALUES
  (1,"user1"), (2, "user2");
INSERT INTO t2 (id, userid, logindate) VALUES
  (1,1,"2015-06-19 12:17:02.828"),
  (2,1,"2016-06-19 12:17:02.828"),
  (3,2,"2017-06-19 12:17:02.828"),
  (4,2,"2018-06-19 12:17:02.828");

let $q=
select * from t1 as u
              left join
              (select * from t2 as au group by au.userid) as auditlastlogin
              on u.id=auditlastlogin.userid;

eval EXPLAIN $q;
eval $q;

set join_cache_level=default;

DROP TABLE t1,t2;


--echo #
--echo # MDEV-21614: potentially splittable materialized derived/view
--echo #             within materialized semi-join
--echo #

create table t1 (
  id int not null auto_increment primary key,
  a int not null
) engine=myisam;

create table t2 (
  id int not null auto_increment primary key,
  ro_id int not null,
  flag int not null, key (ro_id)
) engine=myisam;

insert into t1(a) select seq+100 from seq_1_to_20;
insert into t2(ro_id,flag) select seq, 1 from seq_1_to_20;
insert into t2(ro_id,flag) select seq, 0 from seq_1_to_20;

create view v1 as
select t1.* from t1 left join t2 on (t1.id = t2.ro_id AND t2.flag = 1)
  group by t1.id;

let $q1=
select id, a from t1 where  id in (select id from v1);
eval $q1;
eval explain extended $q1;

let $q2=
select id, a from t1
  where id in (select id
               from (select t1.* from t1 left join t2
                                      on (t1.id = t2.ro_id AND t2.flag = 1)
                     group by t1.id) dt);
eval $q2;
eval explain extended $q2;

drop view v1;
drop table t1,t2;

--echo #
--echo # MDEV-21883: potentially splittable materialized derived
--echo #             that uses a join of 32 tables
--echo #

CREATE TABLE t (id INT NOT NULL PRIMARY KEY);
INSERT INTO t values (1),(2),(3);

let $q=
SELECT t.id FROM t
LEFT JOIN (
    SELECT t0.id FROM t AS t0
    LEFT JOIN t AS t1 ON 0=1
    LEFT JOIN t AS t2 ON 0=1
    LEFT JOIN t AS t3 ON 0=1
    LEFT JOIN t AS t4 ON 0=1
    LEFT JOIN t AS t5 ON 0=1
    LEFT JOIN t AS t6 ON 0=1
    LEFT JOIN t AS t7 ON 0=1
    LEFT JOIN t AS t8 ON 0=1
    LEFT JOIN t AS t9 ON 0=1
    LEFT JOIN t AS t10 ON 0=1
    LEFT JOIN t AS t11 ON 0=1
    LEFT JOIN t AS t12 ON 0=1
    LEFT JOIN t AS t13 ON 0=1
    LEFT JOIN t AS t14 ON 0=1
    LEFT JOIN t AS t15 ON 0=1
    LEFT JOIN t AS t16 ON 0=1
    LEFT JOIN t AS t17 ON 0=1
    LEFT JOIN t AS t18 ON 0=1
    LEFT JOIN t AS t19 ON 0=1
    LEFT JOIN t AS t20 ON 0=1
    LEFT JOIN t AS t21 ON 0=1
    LEFT JOIN t AS t22 ON 0=1
    LEFT JOIN t AS t23 ON 0=1
    LEFT JOIN t AS t24 ON 0=1
    LEFT JOIN t AS t25 ON 0=1
    LEFT JOIN t AS t26 ON 0=1
    LEFT JOIN t AS t27 ON 0=1
    LEFT JOIN t AS t28 ON 0=1
    LEFT JOIN t AS t29 ON 0=1
    LEFT JOIN t AS t30 ON 0=1
    LEFT JOIN t AS t31 ON 0=1
    GROUP BY t0.id) AS dt ON dt.id = t.id;

eval set statement optimizer_switch='split_materialized=off' for $q;

eval set statement optimizer_switch='split_materialized=on' for $q;

DROP TABLE t;

--echo #
--echo # MDEV-23804: Server crashes in st_select_lex::collect_grouping_fields_for_derived
--echo #

CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (3),(4);
CREATE VIEW v1 AS SELECT a FROM t1 UNION VALUES (3),(4);
--source include/analyze-format.inc
ANALYZE FORMAT=JSON SELECT * from v1 WHERE a=3;
SELECT * from v1 WHERE a=3;
DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # MDEV-25128: Split optimization for join with materialized semi-join
--echo #

create table t1 (id int, a int, index (a), index (id, a)) engine=myisam;
insert into t1 values
(17,1),(17,3010),(17,3013),(17,3053),(21,2446),(21,2467),(21,2);

create table t2 (a int) engine=myisam;
insert into t2 values (1),(2),(3);

create  table t3 (id int) engine=myisam;
insert into t3 values (1),(2);

analyze table t1,t2,t3;

let $q=
select * from t1, (select a from t1 cp2 group by a) dt, t3
  where dt.a = t1.a and t1.a = t3.id and t1.a in (select a from t2);

set optimizer_switch="split_materialized=off";
eval $q;
eval explain $q;
eval explain format=json $q;

set optimizer_switch="split_materialized=default";
eval $q;
eval explain $q;
eval explain format=json $q;

eval prepare stmt from "$q";
execute stmt;
execute stmt;
deallocate prepare stmt;

drop table t1,t2,t3;

--echo # End of 10.3 tests

--echo #
--echo # MDEV-18679: materialized view with SELECT S containing materialized
--echo #             derived when impossible WHERE has been detected for S
--echo #

create table t1 (pk int, f varchar(1));
insert into t1 values
  (3,'y'), (1,'x'), (7,'z');

create view v1 as
select t1.f
  from t1, (select distinct * from t1) t
  where t.f = t1.f and 1 = 0
group by t1.f;

select * from v1;
explain select * from v1;

drop view v1;
drop table t1;

--echo # End of 10.4 tests