ER_BAD_FIELD_ERROR (Unknown column in where clause) on the 2nd execution of PS

revno: 4030

revision-id: monty@askmonty.org-20140124125018-qwln430o4bu3pued

parent: monty@askmonty.org-20140124123019-2ts6q2ip6076gmqg

committer: Michael Widenius <monty@askmonty.org>

branch nick: maria-5.5

timestamp: Fri 2014-01-24 14:50:18 +0200

message:

  Fix for MDEV-5531: double call procedure in one session - hard shutdown the server

  Main fix was to not cache derivied tables as they may be temporary tables that are deleted before the next query.

  This was a bit tricky as Item_field::fix_fields depended on cached_tables to be set to resolve some columns.

CREATE TABLE t1 (a INT, b INT) ENGINE=MyISAM;

CREATE TABLE t2 (c INT) ENGINE=MyISAM;

INSERT INTO t1 VALUES (1,1),(2,2);

INSERT INTO t2 VALUES (3),(4);

PREPARE stmt FROM 'SELECT * FROM ( SELECT DISTINCT * FROM t1 ) AS sq WHERE a IN ( SELECT c FROM t2 WHERE c <= sq.b )';

EXECUTE stmt;

EXECUTE stmt;

query 'EXECUTE stmt' failed: 1054: Unknown column 'sq.b' in 'where clause'