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Fixed a typo/bug that could lead to wrong selectivity numbers for

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tables retrieved by range scans.

Added comments forgotten in the previous patch.
This commit is contained in:
Igor Babaev
2013-04-17 16:15:22 -07:00
parent 2e54ad03ad
commit ac8333e46d
3 changed files with 38 additions and 7 deletions
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4
mysql-test/r/selectivity.result
View File

@ -77,9 +77,9 @@ order by s_suppkey;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY supplier ALL PRIMARY NULL NULL NULL 10 100.00 Using filesort
1 PRIMARY <derived3> ref key0 key0 5 dbt3_s001.supplier.s_suppkey 10 100.00 Using where
3 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 268 0.20 Using where; Using temporary; Using filesort
3 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 268 100.00 Using where; Using temporary; Using filesort
2 SUBQUERY <derived4> ALL NULL NULL NULL NULL 268 100.00
4 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 268 0.20 Using where; Using temporary; Using filesort
4 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 268 100.00 Using where; Using temporary; Using filesort
Warnings:
Note 1003 select `dbt3_s001`.`supplier`.`s_suppkey` AS `s_suppkey`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`revenue0`.`total_revenue` AS `total_revenue` from `dbt3_s001`.`supplier` join `dbt3_s001`.`revenue0` where ((`revenue0`.`supplier_no` = `dbt3_s001`.`supplier`.`s_suppkey`) and (`revenue0`.`total_revenue` = (select max(`revenue0`.`total_revenue`) from `dbt3_s001`.`revenue0`))) order by `dbt3_s001`.`supplier`.`s_suppkey`
select s_suppkey, s_name, s_address, s_phone, total_revenue

4
mysql-test/r/selectivity_innodb.result
View File

@ -80,9 +80,9 @@ order by s_suppkey;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY supplier index PRIMARY PRIMARY 4 NULL 10 100.00
1 PRIMARY <derived3> ref key0 key0 5 dbt3_s001.supplier.s_suppkey 10 100.00 Using where
3 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 0.14 Using where; Using temporary; Using filesort
3 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 100.00 Using where; Using temporary; Using filesort
2 SUBQUERY <derived4> ALL NULL NULL NULL NULL 228 100.00
4 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 0.14 Using where; Using temporary; Using filesort
4 DERIVED lineitem range i_l_shipdate i_l_shipdate 4 NULL 228 100.00 Using where; Using temporary; Using filesort
Warnings:
Note 1003 select `dbt3_s001`.`supplier`.`s_suppkey` AS `s_suppkey`,`dbt3_s001`.`supplier`.`s_name` AS `s_name`,`dbt3_s001`.`supplier`.`s_address` AS `s_address`,`dbt3_s001`.`supplier`.`s_phone` AS `s_phone`,`revenue0`.`total_revenue` AS `total_revenue` from `dbt3_s001`.`supplier` join `dbt3_s001`.`revenue0` where ((`revenue0`.`supplier_no` = `dbt3_s001`.`supplier`.`s_suppkey`) and (`revenue0`.`total_revenue` = (select max(`revenue0`.`total_revenue`) from `dbt3_s001`.`revenue0`))) order by `dbt3_s001`.`supplier`.`s_suppkey`
select s_suppkey, s_name, s_address, s_phone, total_revenue