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BUG#35850 "Performance regression in 5.1.23/5.1.24"

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- Disable the "prefer full scan on clustered primary key over full scan
  of any secondary key" rule introduced by BUG#35850.
- Update test results accordingly 
(bk trigger: file this for BUG#35850)


mysql-test/r/innodb.result:
  BUG#35850 "Performance regression in 5.1.23/5.1.24"
  - Update test results
mysql-test/r/innodb_mysql.result:
  BUG#35850 "Performance regression in 5.1.23/5.1.24"
  - Testcase
  - Update test results
mysql-test/r/join_outer_innodb.result:
  BUG#35850 "Performance regression in 5.1.23/5.1.24"
  - Update test results
mysql-test/t/innodb_mysql.test:
  BUG#35850 "Performance regression in 5.1.23/5.1.24"
  - Testcase
sql/sql_select.cc:
  BUG#35850 "Performance regression in 5.1.23/5.1.24"
  - Disable the "prefer full scan on clustered primary key over full scan
    of any secondary key" rule introduced by BUG#35850.
This commit is contained in:
unknown
2008-05-07 09:58:21 +04:00
parent d1361c86e7
commit 87e5098249
5 changed files with 57 additions and 28 deletions
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16
mysql-test/t/innodb_mysql.test
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@@ -13,3 +13,19 @@ let $test_foreign_keys= 1;
set global innodb_support_xa=default;
set session innodb_support_xa=default;
--source include/mix1.inc
--disable_warnings
drop table if exists t1, t2, t3;
--enable_warnings
#
# BUG#35850: Performance regression in 5.1.23/5.1.24
#
create table t1(a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, b int, pk int, key(a,b), primary key(pk)) engine=innodb;
insert into t2 select @a:=A.a+10*(B.a + 10*C.a),@a, @a from t1 A, t1 B, t1 C;
--echo this must use key 'a', not PRIMARY:
--replace_column 9 #
explain select a from t2 where a=b;
drop table t1, t2;