mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 05:22:25 +01:00
f2829d0386
Fixed (together with Guilhem) bugs in mysqlbinlog regarding --offset Prefix addresses with 0x for easier comparisons of debug logs Fixed problem where MySQL choosed index-read even if there would be a much better range on the same index This fix changed some 'index' queries to 'range' queries in the test suite Don't create 'dummy' WHERE clause for trivial WHERE clauses where we can remove the WHERE clause. This fix removed of a lot of 'Using where' notes in the test suite. Give NOTE instead of WARNING if table/function doesn't exists when using DROP IF EXISTS Give NOTE instead of WARNING for safe field-type conversions
196 lines
12 KiB
Text
196 lines
12 KiB
Text
drop table if exists t0,t1,t2;
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select count(*) from t1;
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count(*)
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64801
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explain select key1,key2 from t1 where key1=100 and key2=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL 3 Using intersect(key1,key2); Using where; Using index
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select key1,key2 from t1 where key1=100 and key2=100;
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key1 key2
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100 100
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explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 8 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
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select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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key1 key2 key3 key4 filler1
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100 100 100 100 key1-key2-key3-key4
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insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, -1, -1, 'key1-key2');
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insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 100, 100, 'key4-key3');
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explain select key1,key2,filler1 from t1 where key1=100 and key2=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL 3 Using intersect(key1,key2); Using where
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select key1,key2,filler1 from t1 where key1=100 and key2=100;
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key1 key2 filler1
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100 100 key1-key2-key3-key4
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100 100 key1-key2
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explain select key1,key2 from t1 where key1=100 and key2=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL 3 Using intersect(key1,key2); Using where; Using index
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select key1,key2 from t1 where key1=100 and key2=100;
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key1 key2
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100 100
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100 100
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explain select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 8 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
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select key1,key2,key3,key4 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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key1 key2 key3 key4
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100 100 100 100
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100 100 -1 -1
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-1 -1 100 100
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explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 8 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
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select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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key1 key2 key3 key4 filler1
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100 100 100 100 key1-key2-key3-key4
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100 100 -1 -1 key1-key2
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-1 -1 100 100 key4-key3
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explain select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3 key1,key2,key3 5,5,5 NULL 1 Using intersect(key1,key2,key3); Using where; Using index
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select key1,key2,key3 from t1 where key1=100 and key2=100 and key3=100;
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key1 key2 key3
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100 100 100
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insert into t1 (key1,key2,key3,key4,filler1) values (101,101,101,101, 'key1234-101');
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explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3 key1,key2,key3 5,5,5 NULL 5 Using union(intersect(key1,key2),key3); Using where
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select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=101;
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key1 key2 key3 key4 filler1
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100 100 100 100 key1-key2-key3-key4
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100 100 -1 -1 key1-key2
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101 101 101 101 key1234-101
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select key1,key2, filler1 from t1 where key1=100 and key2=100;
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key1 key2 filler1
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100 100 key1-key2-key3-key4
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100 100 key1-key2
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update t1 set filler1='to be deleted' where key1=100 and key2=100;
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update t1 set key1=200,key2=200 where key1=100 and key2=100;
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delete from t1 where key1=200 and key2=200;
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select key1,key2,filler1 from t1 where key2=100 and key2=200;
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key1 key2 filler1
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explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 8 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
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select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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key1 key2 key3 key4 filler1
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-1 -1 100 100 key4-key3
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delete from t1 where key3=100 and key4=100;
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explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 8 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
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select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
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key1 key2 key3 key4 filler1
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explain select key1,key2 from t1 where key1=100 and key2=100;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL 3 Using intersect(key1,key2); Using where; Using index
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select key1,key2 from t1 where key1=100 and key2=100;
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key1 key2
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insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-1');
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insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-2');
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insert into t1 (key1, key2, key3, key4, filler1) values (100, 100, 200, 200,'key1-key2-key3-key4-3');
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explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key3,key1,key2,key4 5,5,5,5 NULL 16 Using union(key3,intersect(key1,key2),key4); Using where
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select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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key1 key2 key3 key4 filler1
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100 100 200 200 key1-key2-key3-key4-3
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100 100 200 200 key1-key2-key3-key4-2
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100 100 200 200 key1-key2-key3-key4-1
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insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, -1, 200,'key4');
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explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key3,key1,key2,key4 5,5,5,5 NULL 18 Using union(key3,intersect(key1,key2),key4); Using where
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select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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key1 key2 key3 key4 filler1
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100 100 200 200 key1-key2-key3-key4-3
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100 100 200 200 key1-key2-key3-key4-2
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100 100 200 200 key1-key2-key3-key4-1
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-1 -1 -1 200 key4
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insert into t1 (key1, key2, key3, key4, filler1) values (-1, -1, 200, -1,'key3');
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explain select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge key1,key2,key3,key4 key3,key1,key2,key4 5,5,5,5 NULL 20 Using union(key3,intersect(key1,key2),key4); Using where
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select key1,key2,key3,key4,filler1 from t1 where key3=200 or (key1=100 and key2=100) or key4=200;
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key1 key2 key3 key4 filler1
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100 100 200 200 key1-key2-key3-key4-3
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100 100 200 200 key1-key2-key3-key4-2
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100 100 200 200 key1-key2-key3-key4-1
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-1 -1 -1 200 key4
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-1 -1 200 -1 key3
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explain select * from t1 where st_a=1 and st_b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b st_a,st_b 4,4 NULL 2508 Using intersect(st_a,st_b); Using where
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explain select st_a,st_b from t1 where st_a=1 and st_b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b st_a,st_b 4,4 NULL 2508 Using intersect(st_a,st_b); Using where; Using index
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explain select st_a from t1 ignore index (st_a) where st_a=1 and st_b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,stb_swt1a_2b,stb_swt1b,st_b st_b 4 const 14720 Using where
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explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a sta_swt12a 12 const,const,const 958
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explain select * from t1 where st_b=1 and swt1b=1 and swt2b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref stb_swt1a_2b,stb_swt1b,st_b stb_swt1b 8 const,const 3757 Using where
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explain select * from t1 where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b sta_swt12a,stb_swt1a_2b 12,12 NULL 42 Using intersect(sta_swt12a,stb_swt1a_2b); Using where
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explain select * from t1 ignore index (sta_swt21a, stb_swt1a_2b)
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where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b sta_swt12a,stb_swt1b 12,8 NULL 42 Using intersect(sta_swt12a,stb_swt1b); Using where
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explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b)
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where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt1a,sta_swt2a,st_a,stb_swt1b,st_b sta_swt1a,sta_swt2a,stb_swt1b 8,8,8 NULL 41 Using intersect(sta_swt1a,sta_swt2a,stb_swt1b); Using where
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explain select * from t1 ignore index (sta_swt21a, sta_swt12a, stb_swt1a_2b, stb_swt1b)
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where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1 and swt2b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt1a,sta_swt2a,st_a,st_b sta_swt1a,sta_swt2a,st_b 8,8,4 NULL 159 Using intersect(sta_swt1a,sta_swt2a,st_b); Using where
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explain select * from t1
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where st_a=1 and swt1a=1 and swt2a=1 and st_b=1 and swt1b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b sta_swt12a,stb_swt1a_2b 12,12 NULL 42 Using intersect(sta_swt12a,stb_swt1a_2b); Using where
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explain select * from t1
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where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b sta_swt1a,stb_swt1b 8,8 NULL 163 Using intersect(sta_swt1a,stb_swt1b); Using where
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explain select st_a from t1
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where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b sta_swt1a,stb_swt1b 8,8 NULL 163 Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
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explain select st_a from t1
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where st_a=1 and swt1a=1 and st_b=1 and swt1b=1 and swt1b=1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index_merge sta_swt12a,sta_swt1a,sta_swt2a,sta_swt21a,st_a,stb_swt1a_2b,stb_swt1b,st_b sta_swt1a,stb_swt1b 8,8 NULL 163 Using intersect(sta_swt1a,stb_swt1b); Using where; Using index
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drop table t0,t1;
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create table t2 (
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a char(10),
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b char(10),
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filler1 char(255),
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filler2 char(255),
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key(a(5)),
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key(b(5))
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);
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select count(a) from t2 where a='BBBBBBBB';
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count(a)
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4
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select count(a) from t2 where b='BBBBBBBB';
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count(a)
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4
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explain select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ref a,b a 6 const 4 Using where
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select count(a) from t2 where a='AAAAAAAA' and b='AAAAAAAA';
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count(a)
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4
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select count(a) from t2 ignore index(a,b) where a='AAAAAAAA' and b='AAAAAAAA';
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count(a)
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4
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insert into t2 values ('ab', 'ab', 'uh', 'oh');
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explain select a from t2 where a='ab';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ref a a 6 const 1 Using where
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drop table t2;
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