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-#
-# Index merge tests
-#
---disable_warnings
-drop table if exists t0, t1, t2, t3, t4;
---enable_warnings
-
-# Create and fill a table with simple keys
-create table t0
-(
- key1 int not null,
- INDEX i1(key1)
-);
-
---disable_query_log
-insert into t0 values (1),(2),(3),(4),(5),(6),(7),(8);
-
-let $1=7;
-set @d=8;
-while ($1)
-{
- eval insert into t0 select key1+@d from t0;
- eval set @d=@d*2;
- dec $1;
-}
---enable_query_log
-
-alter table t0 add key2 int not null, add index i2(key2);
-alter table t0 add key3 int not null, add index i3(key3);
-alter table t0 add key4 int not null, add index i4(key4);
-alter table t0 add key5 int not null, add index i5(key5);
-alter table t0 add key6 int not null, add index i6(key6);
-alter table t0 add key7 int not null, add index i7(key7);
-alter table t0 add key8 int not null, add index i8(key8);
-
-update t0 set key2=key1,key3=key1,key4=key1,key5=key1,key6=key1,key7=key1,key8=1024-key1;
-analyze table t0;
-
-# 1. One index
-explain select * from t0 where key1 < 3 or key1 > 1020;
-
-# 2. Simple cases
-explain
-select * from t0 where key1 < 3 or key2 > 1020;
-select * from t0 where key1 < 3 or key2 > 1020;
-
-explain select * from t0 where key1 < 3 or key2 <4;
-
-explain
-select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
-select * from t0 where (key1 > 30 and key1<35) or (key2 >32 and key2 < 40);
-
-# 3. Check that index_merge doesn't break "ignore/force/use index"
-explain select * from t0 ignore index (i2) where key1 < 3 or key2 <4;
-explain select * from t0 where (key1 < 3 or key2 <4) and key3 = 50;
-explain select * from t0 use index (i1,i2) where (key1 < 3 or key2 <4) and key3 = 50;
-
-explain select * from t0 where (key1 > 1 or key2 > 2);
-explain select * from t0 force index (i1,i2) where (key1 > 1 or key2 > 2);
-
-
-# 4. Check if conjuncts are grouped by keyuse
-explain
- select * from t0 where key1<3 or key2<3 or (key1>5 and key1<8) or
- (key1>10 and key1<12) or (key2>100 and key2<110);
-
-# 5. Check index_merge with conjuncts that are always true/false
-# verify fallback to "range" if there is only one non-confluent condition
-explain select * from t0 where key2 = 45 or key1 <=> null;
-
-explain select * from t0 where key2 = 45 or key1 is not null;
-explain select * from t0 where key2 = 45 or key1 is null;
-
-# the last conj. is always false and will be discarded
-explain select * from t0 where key2=10 or key3=3 or key4 <=> null;
-
-# the last conj. is always true and will cause 'all' scan
-explain select * from t0 where key2=10 or key3=3 or key4 is null;
-
-# some more complicated cases
-explain select key1 from t0 where (key1 <=> null) or (key2 < 5) or
- (key3=10) or (key4 <=> null);
-explain select key1 from t0 where (key1 <=> null) or (key1 < 5) or
- (key3=10) or (key4 <=> null);
-
-# 6.Several ways to do index_merge, (ignored) index_merge vs. range
-explain select * from t0 where
- (key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 5 or key6 < 5);
-
-explain
-select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
-
-select * from t0 where (key1 < 3 or key2 < 6) and (key1 < 7 or key3 < 4);
-
-
-explain select * from t0 where
- (key1 < 3 or key2 < 3) and (key3 < 4 or key4 < 4) and (key5 < 2 or key6 < 2);
-
-# now index_merge is not used at all when "range" is possible
-explain select * from t0 where
- (key1 < 3 or key2 < 3) and (key3 < 100);
-
-# this even can cause "all" scan:
-explain select * from t0 where
- (key1 < 3 or key2 < 3) and (key3 < 1000);
-
-
-# 7. Complex cases
-# tree_or(List<SEL_IMERGE>, range SEL_TREE).
-explain select * from t0 where
- ((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
- or
- key2 > 5;
-
-explain select * from t0 where
- ((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
- or
- key1 < 7;
-
-select * from t0 where
- ((key1 < 4 or key2 < 4) and (key2 <5 or key3 < 4))
- or
- key1 < 7;
-
-# tree_or(List<SEL_IMERGE>, List<SEL_IMERGE>).
-explain select * from t0 where
- ((key1 < 4 or key2 < 4) and (key3 <5 or key5 < 4))
- or
- ((key5 < 5 or key6 < 6) and (key7 <7 or key8 < 4));
-
-explain select * from t0 where
- ((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
- or
- ((key7 <7 or key8 < 4) and (key5 < 5 or key6 < 6));
-
-explain select * from t0 where
- ((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
- or
- ((key3 <7 or key5 < 2) and (key5 < 5 or key6 < 6));
-
-explain select * from t0 where
- ((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
- or
- (((key3 <7 and key7 < 6) or key5 < 2) and (key5 < 5 or key6 < 6));
-
-explain select * from t0 where
- ((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
- or
- ((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
-
-explain select * from t0 force index(i1, i2, i3, i4, i5, i6 ) where
- ((key3 <5 or key5 < 4) and (key1 < 4 or key2 < 4))
- or
- ((key3 >=5 or key5 < 2) and (key5 < 5 or key6 < 6));
-
-# 8. Verify that "order by" after index merge uses filesort
-select * from t0 where key1 < 5 or key8 < 4 order by key1;
-
-explain
-select * from t0 where key1 < 5 or key8 < 4 order by key1;
-
-# 9. Check that index_merge cost is compared to 'index' where possible
-create table t2 like t0;
-insert into t2 select * from t0;
-
-alter table t2 add index i1_3(key1, key3);
-alter table t2 add index i2_3(key2, key3);
-alter table t2 drop index i1;
-alter table t2 drop index i2;
-alter table t2 add index i321(key3, key2, key1);
-
-# index_merge vs 'index', index_merge is better.
-explain select key3 from t2 where key1 = 100 or key2 = 100;
-
-# index_merge vs 'index', 'index' is better.
-explain select key3 from t2 where key1 <100 or key2 < 100;
-
-# index_merge vs 'all', index_merge is better.
-explain select key7 from t2 where key1 <100 or key2 < 100;
-
-# 10. Multipart keys.
-create table t4 (
- key1a int not null,
- key1b int not null,
- key2 int not null,
- key2_1 int not null,
- key2_2 int not null,
- key3 int not null,
-
- index i1a (key1a, key1b),
- index i1b (key1b, key1a),
-
- index i2_1(key2, key2_1),
- index i2_2(key2, key2_1)
-);
-
-insert into t4 select key1,key1,key1 div 10, key1 % 10, key1 % 10, key1 from t0;
-
-# the following will be handled by index_merge:
-select * from t4 where key1a = 3 or key1b = 4;
-explain select * from t4 where key1a = 3 or key1b = 4;
-
-# and the following will not
-explain select * from t4 where key2 = 1 and (key2_1 = 1 or key3 = 5);
-
-explain select * from t4 where key2 = 1 and (key2_1 = 1 or key2_2 = 5);
-
-explain select * from t4 where key2_1 = 1 or key2_2 = 5;
-
-
-# 11. Multitable selects
-create table t1 like t0;
-insert into t1 select * from t0;
-
-# index_merge on first table in join
-explain select * from t0 left join t1 on (t0.key1=t1.key1)
- where t0.key1=3 or t0.key2=4;
-
-select * from t0 left join t1 on (t0.key1=t1.key1)
- where t0.key1=3 or t0.key2=4;
-
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and ( t0.key1=3 or t0.key2=4);
-
-# index_merge vs. ref
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and
- (t0.key1=3 or t0.key2=4) and t1.key1<200;
-
-# index_merge vs. ref
-explain
-select * from t0,t1 where (t0.key1=t1.key1) and
- (t0.key1=3 or t0.key2<4) and t1.key1=2;
-
-# index_merge on second table in join
-explain select * from t0,t1 where t0.key1 = 5 and
- (t1.key1 = t0.key1 or t1.key8 = t0.key1);
-
-# Fix for bug#1974
-explain select * from t0,t1 where t0.key1 < 3 and
- (t1.key1 = t0.key1 or t1.key8 = t0.key1);
-
-# index_merge inside union
-explain select * from t1 where key1=3 or key2=4
- union select * from t1 where key1<4 or key3=5;
-
-# index merge in subselect
-explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
-
-# 12. check for long index_merges.
-create table t3 like t0;
-insert into t3 select * from t0;
-alter table t3 add key9 int not null, add index i9(key9);
-alter table t3 add keyA int not null, add index iA(keyA);
-alter table t3 add keyB int not null, add index iB(keyB);
-alter table t3 add keyC int not null, add index iC(keyC);
-update t3 set key9=key1,keyA=key1,keyB=key1,keyC=key1;
-
-explain select * from t3 where
- key1=1 or key2=2 or key3=3 or key4=4 or
- key5=5 or key6=6 or key7=7 or key8=8 or
- key9=9 or keyA=10 or keyB=11 or keyC=12;
-
-select * from t3 where
- key1=1 or key2=2 or key3=3 or key4=4 or
- key5=5 or key6=6 or key7=7 or key8=8 or
- key9=9 or keyA=10 or keyB=11 or keyC=12;
-
-# Test for Bug#3183
-explain select * from t0 where key1 < 3 or key2 < 4;
-select * from t0 where key1 < 3 or key2 < 4;
-
-update t0 set key8=123 where key1 < 3 or key2 < 4;
-select * from t0 where key1 < 3 or key2 < 4;
-
-delete from t0 where key1 < 3 or key2 < 4;
-select * from t0 where key1 < 3 or key2 < 4;
-select count(*) from t0;
-
-# Test for BUG#4177
-drop table t4;
-create table t4 (a int);
-insert into t4 values (1),(4),(3);
-set @save_join_buffer_size=@@join_buffer_size;
-set join_buffer_size= 4000;
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
- where (A.key1 < 500000 or A.key2 < 3)
- and (B.key1 < 500000 or B.key2 < 3);
-
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
- where (A.key1 < 500000 or A.key2 < 3)
- and (B.key1 < 500000 or B.key2 < 3);
-
-update t0 set key1=1;
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
- where (A.key1 = 1 or A.key2 = 1)
- and (B.key1 = 1 or B.key2 = 1);
-
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A force index(i1,i2), t0 as B force index (i1,i2)
- where (A.key1 = 1 or A.key2 = 1)
- and (B.key1 = 1 or B.key2 = 1);
-
-alter table t0 add filler1 char(200), add filler2 char(200), add filler3 char(200);
-update t0 set key2=1, key3=1, key4=1, key5=1,key6=1,key7=1 where key7 < 500;
-
-# The next query will not use index i7 in intersection if the OS doesn't
-# support file sizes > 2GB. (ha_myisam::ref_length depends on this and index
-# scan cost estimates depend on ha_myisam::ref_length)
---replace_column 9 #
---replace_result "4,4,4,4,4,4,4" X "4,4,4,4,4,4" X "i6,i7" "i6,i7?" "i6" "i6,i7?"
-explain select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A, t0 as B
- where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1)
- and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1);
-
-select max(A.key1 + B.key1 + A.key2 + B.key2 + A.key3 + B.key3 + A.key4 + B.key4 + A.key5 + B.key5)
- from t0 as A, t0 as B
- where (A.key1 = 1 and A.key2 = 1 and A.key3 = 1 and A.key4=1 and A.key5=1 and A.key6=1 and A.key7 = 1 or A.key8=1)
- and (B.key1 = 1 and B.key2 = 1 and B.key3 = 1 and B.key4=1 and B.key5=1 and B.key6=1 and B.key7 = 1 or B.key8=1);
-
-set join_buffer_size= @save_join_buffer_size;
-# Test for BUG#4177 ends
-
-drop table t0, t1, t2, t3, t4;
-
-# BUG#16166
-CREATE TABLE t1 (
- cola char(3) not null, colb char(3) not null, filler char(200),
- key(cola), key(colb)
-);
-INSERT INTO t1 VALUES ('foo','bar', 'ZZ'),('fuz','baz', 'ZZ');
-
---disable_query_log
-let $1=9;
-while ($1)
-{
- eval INSERT INTO t1 SELECT * from t1 WHERE cola = 'foo';
- dec $1;
-}
-
-let $1=13;
-while ($1)
-{
- eval INSERT INTO t1 SELECT * from t1 WHERE cola <> 'foo';
- dec $1;
-}
-
---enable_query_log
-
-OPTIMIZE TABLE t1;
-select count(*) from t1;
-explain select * from t1 WHERE cola = 'foo' AND colb = 'bar';
-explain select * from t1 force index(cola,colb) WHERE cola = 'foo' AND colb = 'bar';
-drop table t1;
-
-#
-# BUG#17314: Index_merge/intersection not choosen by the optimizer for MERGE tables
-#
-create table t0 (a int);
-insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
-create table t1 (
- a int, b int,
- filler1 char(200), filler2 char(200),
- key(a),key(b)
-);
-insert into t1 select @v:= A.a, @v, 't1', 'filler2' from t0 A, t0 B, t0 C;
-create table t2 like t1;
-
-create table t3 (
- a int, b int,
- filler1 char(200), filler2 char(200),
- key(a),key(b)
-) engine=merge union=(t1,t2);
-
---replace_column 9 #
-explain select * from t1 where a=1 and b=1;
---replace_column 9 #
-explain select * from t3 where a=1 and b=1;
-
-drop table t3;
-drop table t0, t1, t2;
-
-#
-# BUG#20256 - LOCK WRITE - MyISAM
-#
-CREATE TABLE t1(a INT);
-INSERT INTO t1 VALUES(1);
-CREATE TABLE t2(a INT, b INT, dummy CHAR(16) DEFAULT '', KEY(a), KEY(b));
-INSERT INTO t2(a,b) VALUES
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),(0,0),
-(1,2);
-LOCK TABLES t1 WRITE, t2 WRITE;
-INSERT INTO t2(a,b) VALUES(1,2);
-SELECT t2.a FROM t1,t2 WHERE t2.b=2 AND t2.a=1;
-UNLOCK TABLES;
-DROP TABLE t1, t2;