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Code Activity

Removed double records_in_range calls from multi_range_read_info_const

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This was to remove a performance regression between 10.3 and 10.4
In 10.5 we will have a better implementation of records_in_range
that will enable us to get more statistics.
This change was not done in 10.4 because the 10.5 will be part of
a larger change that is not suitable for the GA 10.4 version

Other things:
- Changed default handler block_size to 8192 to fix things statistics
  for engines that doesn't set the block size.
- Fixed a bug in spider when using multiple part const ranges
  (Patch from Kentoku)
This commit is contained in:
Monty
2020-03-13 15:28:42 +02:00
parent 96b472c0ae
commit 1242eb3d32
68 changed files with 656 additions and 505 deletions
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12
mysql-test/main/partition_mrr_innodb.result
View File

@ -129,7 +129,7 @@ set join_cache_level=6;
set optimizer_switch='mrr=on';
explain extended select * from t0,t2 where t2.a in (3,4) and t0.a=t2.a and (t0.b / 10) = t2.a-1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 2 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 20 10.00 Using where; Using index
1 SIMPLE t0 ref idx idx 5 test.t2.a 12 100.00 Using index condition(BKA); Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t0`.`tp` AS `tp`,`test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t0`.`c` AS `c`,`test`.`t2`.`a` AS `a` from `test`.`t0` join `test`.`t2` where `test`.`t0`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` in (3,4) and `test`.`t0`.`b` / 10 = `test`.`t2`.`a` - 1
@ -146,7 +146,7 @@ tp a b c a
3 4 30 zzzyy 4
explain extended select * from t1,t2 where t2.a in (3,4) and t1.a=t2.a and (t1.b / 10) = t2.a-1;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 2 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 20 10.00 Using where; Using index
1 SIMPLE t1 ref idx idx 5 test.t2.a 12 100.00 Using index condition(BKA); Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`tp` AS `tp`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c`,`test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where `test`.`t1`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` in (3,4) and `test`.`t1`.`b` / 10 = `test`.`t2`.`a` - 1
@ -163,7 +163,7 @@ tp a b c a
3 4 30 zzzyy 4
explain extended select * from t0,t2 where t2.a in (3,4) and t0.a=t2.a and (t0.b / 10) = 4;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 2 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 20 10.00 Using where; Using index
1 SIMPLE t0 ref idx idx 5 test.t2.a 12 100.00 Using index condition; Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t0`.`tp` AS `tp`,`test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t0`.`c` AS `c`,`test`.`t2`.`a` AS `a` from `test`.`t0` join `test`.`t2` where `test`.`t0`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` in (3,4) and `test`.`t0`.`b` / 10 = 4
@ -189,7 +189,7 @@ tp a b c a
2 4 40 xxzy 4
explain extended select * from t1,t2 where t2.a in (3,4) and t1.a=t2.a and (t1.b / 10) = 4;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 2 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 20 10.00 Using where; Using index
1 SIMPLE t1 ref idx idx 5 test.t2.a 12 100.00 Using index condition(BKA); Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t1`.`tp` AS `tp`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c`,`test`.`t2`.`a` AS `a` from `test`.`t1` join `test`.`t2` where `test`.`t1`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` in (3,4) and `test`.`t1`.`b` / 10 = 4
@ -221,7 +221,7 @@ test.t2 analyze status Engine-independent statistics collected
test.t2 analyze status OK
explain extended select * from t2 left join t0 on t2.a=t0.a where t2.a in (3,4) and t0.b is null;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 4 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 23 17.39 Using where; Using index
1 SIMPLE t0 ref idx idx 5 test.t2.a 12 100.00 Using where; Not exists; Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t0`.`tp` AS `tp`,`test`.`t0`.`a` AS `a`,`test`.`t0`.`b` AS `b`,`test`.`t0`.`c` AS `c` from `test`.`t2` left join `test`.`t0` on(`test`.`t0`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` is not null) where `test`.`t2`.`a` in (3,4) and `test`.`t0`.`b` is null
@ -229,7 +229,7 @@ select * from t2 left join t0 on t2.a=t0.a where t2.a in (3,4) and t0.b is null;
a tp a b c
explain extended select * from t2 left join t1 on t2.a=t1.a where t2.a in (3,4) and t1.b is null;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 range idx idx 5 NULL 4 100.00 Using where; Using index
1 SIMPLE t2 index idx idx 5 NULL 23 17.39 Using where; Using index
1 SIMPLE t1 ref idx idx 5 test.t2.a 12 100.00 Using where; Not exists; Using join buffer (flat, BKA join); Rowid-ordered scan
Warnings:
Note 1003 select `test`.`t2`.`a` AS `a`,`test`.`t1`.`tp` AS `tp`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t2` left join `test`.`t1` on(`test`.`t1`.`a` = `test`.`t2`.`a` and `test`.`t2`.`a` is not null) where `test`.`t2`.`a` in (3,4) and `test`.`t1`.`b` is null