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Diffstat (limited to 'mysql-test/t/index_merge.test')
-rw-r--r-- | mysql-test/t/index_merge.test | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/mysql-test/t/index_merge.test b/mysql-test/t/index_merge.test deleted file mode 100644 index 30eb0b40fca..00000000000 --- a/mysql-test/t/index_merge.test +++ /dev/null @@ -1,417 +0,0 @@ -# -# 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; |