let $no_pushdown= set statement optimizer_switch='condition_pushdown_for_derived=off' for; 

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);

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

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

set @save_optimizer_switch= @@optimizer_switch;
set optimizer_switch='split_grouping_derived=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');

eval $no_pushdown $q1;
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');

eval $no_pushdown $q2;
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');

eval $no_pushdown $q4;
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');

eval $no_pushdown $q5;
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');

eval $no_pushdown $q6;
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');

eval $no_pushdown $q7;
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_grouping_derived=off' for; 

create table t1 (a int);
insert into t1 values
(8), (5), (1), (2), (9), (7), (2), (7);

create table t2 (a int, b int, index idx(a));
insert into t2 values
  (7,10), (1,20), (2,23), (7,18), (1,30),
  (4,71), (3,15), (7,82), (8,12), (4,15),
  (11,33), (10,42), (4,53), (10,17), (2,90);

let $q1=
select t1.a,t.max,t.min
from t1 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 $q1;
eval $q1;
eval explain extended $q1;
eval explain format=json $q1;  

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, c varchar(16));
insert into t3 values
(8,'aa'), (5,'cc'), (1,'bb'), (2,'aa'), (9,'cc'),
(7,'aa'), (2,'aa'), (7,'bb');
  
create table t4 (a int, b int, c varchar(16), index idx(a,c));
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,'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 $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;

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

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;

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

drop index idx on t2;
create index idx on t2(b);
create index idx on t3(a);
create index idx2 on t4(c);
insert into t3 select a+1, concat(c,'f') from t3;
insert into t3 select a+1, concat(c,'h')  from t3;
insert into t4 select a+1, b+10, concat(c,'h') from t4;

let $q5=
select t2.a,t2.b,t3.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 > 50 and t2.a=t3.a and t3.c=t.c;

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

let $q6=
select *
from t2, t3, (select c, b, sum(b) over (partition by c) from t4 ) t
where t2.b > 50 and t2.a=t3.a and t3.c=t.c;

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

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 varchar(8), index(c));
INSERT INTO t3 VALUES (1,'foo'),(3,'bar'),(4,'foo'),(2,'bar');

CREATE TABLE t4 (c varchar(8));
INSERT INTO t4 VALUES ('abc'),('foo'),('def');

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 );

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;