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fix (bug #10303: Misleading Last_query_cost value).

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This commit is contained in:
ramil@mysql.com 2005-09-06 15:00:35 +05:00
parent c601bb87f8
commit 68acf8fdea
5 changed files with 43 additions and 0 deletions
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16
mysql-test/r/query_cache.result
View File

@ -1127,3 +1127,19 @@ Qcache_hits 9
drop procedure f1; drop procedure f1;
drop table t1; drop table t1;
set GLOBAL query_cache_size=0; set GLOBAL query_cache_size=0;
SET GLOBAL query_cache_size=102400;
create table t1(a int);
insert into t1 values(0), (1), (4), (5);
select * from t1 where a > 3;
a
4
5
select * from t1 where a > 3;
a
4
5
show status like 'last_query_cost';
Variable_name Value
Last_query_cost 0.000000
drop table t1;
SET GLOBAL query_cache_size=0;

6
mysql-test/r/status.result
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@ -17,3 +17,9 @@ Variable_name Value
Table_locks_immediate 3 Table_locks_immediate 3
Table_locks_waited 1 Table_locks_waited 1
drop table t1; drop table t1;
select 1;
1
1
show status like 'last_query_cost';
Variable_name Value
Last_query_cost 0.000000

13
mysql-test/t/query_cache.test
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@ -816,3 +816,16 @@ drop table t1;
set GLOBAL query_cache_size=0; set GLOBAL query_cache_size=0;
# End of 4.1 tests # End of 4.1 tests
#
# Bug #10303: problem with last_query_cost
#
SET GLOBAL query_cache_size=102400;
create table t1(a int);
insert into t1 values(0), (1), (4), (5);
select * from t1 where a > 3;
select * from t1 where a > 3;
show status like 'last_query_cost';
drop table t1;
SET GLOBAL query_cache_size=0;

7
mysql-test/t/status.test
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@ -37,3 +37,10 @@ show status like 'Table_lock%';
drop table t1; drop table t1;
# End of 4.1 tests # End of 4.1 tests
#
# lost_query_cost
#
select 1;
show status like 'last_query_cost';

1
sql/sql_cache.cc
View File

@ -1178,6 +1178,7 @@ sql mode: 0x%lx, sort len: %lu, conncat len: %lu",
#endif /*!EMBEDDED_LIBRARY*/ #endif /*!EMBEDDED_LIBRARY*/
thd->limit_found_rows = query->found_rows(); thd->limit_found_rows = query->found_rows();
thd->status_var.last_query_cost= 0.0;
BLOCK_UNLOCK_RD(query_block); BLOCK_UNLOCK_RD(query_block);
DBUG_RETURN(1); // Result sent to client DBUG_RETURN(1); // Result sent to client