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Diffstat (limited to 'mysql-test/t/union.test')
| -rw-r--r-- | mysql-test/t/union.test | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/mysql-test/t/union.test b/mysql-test/t/union.test index 877509a9fc0..a5d7dae606f 100644 --- a/mysql-test/t/union.test +++ b/mysql-test/t/union.test @@ -1273,6 +1273,36 @@ SELECT(SELECT 1 AS a ORDER BY a) AS dev; SELECT(SELECT 1 AS a LIMIT 1) AS dev; SELECT(SELECT 1 AS a FROM dual ORDER BY a DESC LIMIT 1) AS dev; + +--echo # +--echo # Bug #17059925 : UNIONS COMPUTES ROWS_EXAMINED INCORRECTLY +--echo # + +## Save current state of slow log variables +SET @old_slow_query_log= @@global.slow_query_log; +SET @old_log_output= @@global.log_output; +SET @old_long_query_time= @@long_query_time; +SET GLOBAL log_output= "TABLE"; +SET GLOBAL slow_query_log= ON; +SET SESSION long_query_time= 0; + +CREATE TABLE t17059925 (a INT); +CREATE TABLE t2 (b INT); +CREATE TABLE t3 (c INT); +INSERT INTO t17059925 VALUES (1), (2), (3); +INSERT INTO t2 VALUES (4), (5), (6); +INSERT INTO t3 VALUES (7), (8), (9); +TRUNCATE table mysql.slow_log; +--sorted_result +SELECT * FROM t17059925 UNION SELECT * FROM t2 UNION SELECT * FROM t3; +SELECT sql_text, rows_examined FROM mysql.slow_log WHERE sql_text LIKE '%SELECT%t17059925%'; +DROP TABLE t17059925, t2, t3; + +## Reset to initial values +SET @@long_query_time= @old_long_query_time; +SET @@global.log_output= @old_log_output; +SET @@global.slow_query_log= @old_slow_query_log; + --echo # --echo # lp:1010729: Unexpected syntax error from UNION --echo # (bug #54382) with single-table join nest |