diff options
Diffstat (limited to 'mysql-test')
| -rw-r--r-- | mysql-test/r/ps.result | 37 | ||||
| -rw-r--r-- | mysql-test/t/ps.test | 20 |
2 files changed, 57 insertions, 0 deletions
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result index 17284a3cad8..4ee72f10785 100644 --- a/mysql-test/r/ps.result +++ b/mysql-test/r/ps.result @@ -5419,5 +5419,42 @@ id select_type table type possible_keys key key_len ref rows Extra DEALLOCATE PREPARE stmt; DROP TABLE t1; # +# MDEV-25108: Running of the EXPLAIN EXTENDED statement produces extra warning +# in case it is executed in PS (prepared statement) mode +# +CREATE TABLE t1 (c int); +CREATE TABLE t2 (d int); +# EXPLAIN EXTENDED in regular way (not PS mode) +EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) FROM t1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select (select 1 from `test`.`t2` where 0) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` +SHOW WARNINGS; +Level Code Message +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select (select 1 from `test`.`t2` where 0) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` +# Now run the same EXPLAIN EXTENDED in PS mode. Number of warnings +# and their content must be the same as in case running the statement +# in regular way +PREPARE stmt FROM "EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) FROM t1"; +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +EXECUTE stmt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 0 0.00 const row not found +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select (select 1 from `test`.`t2` where 0) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` +SHOW WARNINGS; +Level Code Message +Note 1276 Field or reference 'test.t1.c' of SELECT #2 was resolved in SELECT #1 +Note 1003 select (select 1 from `test`.`t2` where 0) AS `(SELECT 1 FROM t2 WHERE d = c)` from `test`.`t1` +DEALLOCATE PREPARE stmt; +DROP TABLE t1, t2; +# # End of 10.2 tests # diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test index a267c8b0e42..5b86f82a9cb 100644 --- a/mysql-test/t/ps.test +++ b/mysql-test/t/ps.test @@ -4927,5 +4927,25 @@ DEALLOCATE PREPARE stmt; DROP TABLE t1; --echo # +--echo # MDEV-25108: Running of the EXPLAIN EXTENDED statement produces extra warning +--echo # in case it is executed in PS (prepared statement) mode +--echo # +CREATE TABLE t1 (c int); +CREATE TABLE t2 (d int); + +--echo # EXPLAIN EXTENDED in regular way (not PS mode) +EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) FROM t1; +SHOW WARNINGS; + +--echo # Now run the same EXPLAIN EXTENDED in PS mode. Number of warnings +--echo # and their content must be the same as in case running the statement +--echo # in regular way +PREPARE stmt FROM "EXPLAIN EXTENDED SELECT (SELECT 1 FROM t2 WHERE d = c) FROM t1"; +EXECUTE stmt; +SHOW WARNINGS; + +DEALLOCATE PREPARE stmt; +DROP TABLE t1, t2; +--echo # --echo # End of 10.2 tests --echo # |