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Diffstat (limited to 'mysql-test/t/index_merge_ror.test')
-rw-r--r-- | mysql-test/t/index_merge_ror.test | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/mysql-test/t/index_merge_ror.test b/mysql-test/t/index_merge_ror.test new file mode 100644 index 00000000000..48fe5526f11 --- /dev/null +++ b/mysql-test/t/index_merge_ror.test @@ -0,0 +1,252 @@ +# +# ROR-index_merge tests. +# +--disable_warnings +drop table if exists t0,t1,t2; +--enable_warnings +--disable_query_log +create table t1 +( + /* Field names reflect value(rowid) distribution, st=STairs, swt= SaWTooth */ + st_a int not null default 0, + swt1a int not null default 0, + swt2a int not null default 0, + + st_b int not null default 0, + swt1b int not null default 0, + swt2b int not null default 0, + + /* fields/keys for row retrieval tests */ + key1 int, + key2 int, + key3 int, + key4 int, + + /* make rows much bigger then keys */ + filler1 char (200), + filler2 char (200), + filler3 char (200), + filler4 char (200), + filler5 char (200), + filler6 char (200), + + /* order of keys is important */ + key sta_swt12a(st_a,swt1a,swt2a), + key sta_swt1a(st_a,swt1a), + key sta_swt2a(st_a,swt2a), + key sta_swt21a(st_a,swt2a,swt1a), + + key st_a(st_a), + key stb_swt1a_2b(st_b,swt1b,swt2a), + key stb_swt1b(st_b,swt1b), + key st_b(st_b), + + key(key1), + key(key2), + key(key3), + key(key4) +) ; + +# Fill table +create table t0 as select * from t1; +let $cnt=1000; +while ($cnt) +{ + eval insert into t0 values (1, 2, 3, 1, 2, 3, 0, 0, 0, 0, 'data1', 'data2', 'data3', 'data4', 'data5', 'data6'); + dec $cnt; +} + +alter table t1 disable keys; +let $1=4; +while ($1) +{ + let $2=4; + while ($2) + { + let $3=4; + while ($3) + { + eval insert into t1 select $1, $2, $3, $1 ,$2, $3, key1, key2, key3, key4, filler1, filler2, filler3, filler4, filler5, filler6 from t0; + dec $3; + } + dec $2; + } + dec $1; +} + +# Row retrieval tests +# -1 is used for values 'out of any range we are using' +# insert enough rows for index intersection to be used for (key1,key2) +insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 100, 100,'key1-key2-key3-key4'); +let $cnt=400; +while ($cnt) +{ + eval insert into t1 (key1, key2, key3, key4, filler1) values (100, -1, 100, -1,'key1-key3'); + dec $cnt; +} +let $cnt=400; +while ($cnt) +{ + eval insert into t1 (key1, key2, key3, key4, filler1) values (-1, 100, -1, 100,'key2-key4'); + dec $cnt; +} +alter table t1 enable keys; +--enable_query_log +select count(*) from t1; + +# One row results tests for cases where a single row matches all conditions +explain select key1,key2 from t1 where key1=100 and key2=100; +select key1,key2 from t1 where key1=100 and key2=100; + +explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; + +# Several-rows results +insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, -1, -1, 'key1-key2'); +insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 100, 100, 'key4-key3'); + +# ROR-intersection, not covering +explain select key1,key2,filler1 from t1 where key1=100 and key2=100; +select key1,key2,filler1 from t1 where key1=100 and key2=100; + +# ROR-intersection, covering +explain select key1,key2 from t1 where key1=100 and key2=100; +select key1,key2 from t1 where key1=100 and key2=100; + +# ROR-union of ROR-intersections +explain select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; + +# 3-way ROR-intersection +explain select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100; +select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100; + +# ROR-union(ROR-intersection, ROR-range) +insert into t1 (key1,key2,key3,key4,filler1) values (101,101,101,101, 'key1234-101'); +explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101; +select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101; + +# Run some ROR updates/deletes +select key1,key2, filler1 from t1 where key1=100 and key2=100; +update t1 set filler1='to be deleted' where key1=100 and key2=100; +update t1 set key1=200,key2=200 where key1=100 and key2=100; +delete from t1 where key1=200 and key2=200; +select key1,key2,filler1 from t1 where key2=100 and key2=200; + +# ROR-union(ROR-intersection) with one of ROR-intersection giving empty +# results +explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; + +delete from t1 where key3=100 and key4=100; + +# ROR-union with all ROR-intersections giving empty results +explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; +select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100; + +# ROR-intersection with empty result +explain select key1,key2 from t1 where key1=100 and key2=100; +select key1,key2 from t1 where key1=100 and key2=100; + +# ROR-union tests with various cases. +# All scans returning duplicate rows: +insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-1'); +insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-2'); +insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-3'); + +explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; +select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; + +insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, -1, 200,'key4'); + +explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; +select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; + +insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 200, -1,'key3'); + +explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; +select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200; + +## +## Optimizer tests +## + +# Check that the shortest key is used for ROR-intersection, covering and non-covering. +explain select * from t1 where st_a=1 and st_b=1; +explain select st_a,st_b from t1 where st_a=1 and st_b=1; + +# Check if "ingore index" syntax works +explain select st_a from t1 ignore index (st_a) where st_a=1 and st_b=1; + +# Do many tests +# Check that keys that don't improve selectivity are skipped. +# + +# Different value on 32 and 64 bit +--replace_result sta_swt12a sta_swt21a sta_swt12a, sta_swt12a, +explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1; + +explain select * from t1 where st_b=1 and swt1b=1 and swt2b=1; + +explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1; + +explain select * from t1 ignore index (sta_swt21a, stb_swt1a_2b) + where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1; + +explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b) + where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1; + +explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b, stb_swt1b) + where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1; + +explain select * from t1 + where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1; + +explain select * from t1 + where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1; + +explain select st_a from t1 + where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1; + +explain select st_a from t1 + where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1; + +drop table t0,t1; + +# 'Partially' covered fields test + +create table t2 ( + a char(10), + b char(10), + filler1 char(255), + filler2 char(255), + key(a(5)), + key(b(5)) +); + +--disable_query_log +let $1=8; +while ($1) +{ + eval insert into t2 values (repeat(char($1+64), 8),repeat(char($1+64), 8),'filler1', 'filler2'); + dec $1; +} +insert into t2 select * from t2; +insert into t2 select * from t2; +--enable_query_log + +# The table row buffer is reused. Fill it with rows that don't match. +select count(a) from t2 where a='BBBBBBBB'; +select count(a) from t2 where b='BBBBBBBB'; + +# BUG#1: +--replace_result a a_or_b b a_or_b +explain select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA'; +select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA'; +select count(a) from t2 ignore index(a,b) where a='AAAAAAAA' and b='AAAAAAAA'; + +insert into t2 values ('ab', 'ab', 'uh', 'oh'); +explain select a from t2 where a='ab'; +drop table t2; |