database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt

Browse Source 
into  magare.gmz:/home/kgeorge/mysql/autopush/B30377-5.0-opt


sql/sql_select.cc:
  Auto merged
This commit is contained in:
unknown
2007-08-29 12:47:24 +03:00
parent bdf19dc73b 310afbd4a9
commit bd1f34d932
4 changed files with 108 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
mysql-test/r/status.result
View File

@ -43,3 +43,51 @@ SHOW STATUS LIKE 'max_used_connections';
Variable_name Value
Max_used_connections 4
SET GLOBAL thread_cache_size=@save_thread_cache_size;
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);
SELECT a FROM t1 LIMIT 1;
a
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 2.402418
EXPLAIN SELECT a FROM t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 2
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 2.402418
SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
a
1
2
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2
2 UNION t1 ALL NULL NULL NULL NULL 2
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL Using filesort
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
a IN (SELECT a FROM t1)
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
x
1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
SELECT * FROM t1 a, t1 b LIMIT 1;
a a
1 1
SHOW SESSION STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 4.805836
DROP TABLE t1;

32
mysql-test/t/status.test
View File

@ -139,4 +139,36 @@ disconnect con3;
disconnect con2;
disconnect con1;
#
# Bug #30377: EXPLAIN loses last_query_cost when used with UNION
#
CREATE TABLE t1 ( a INT );
INSERT INTO t1 VALUES (1), (2);
SELECT a FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
EXPLAIN SELECT a FROM t1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';
EXPLAIN SELECT a FROM t1 UNION SELECT a FROM t1 ORDER BY a;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT a IN (SELECT a FROM t1) FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT (SELECT a FROM t1 LIMIT 1) x FROM t1 LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
SELECT * FROM t1 a, t1 b LIMIT 1;
SHOW SESSION STATUS LIKE 'Last_query_cost';
DROP TABLE t1;
# End of 5.0 tests