During schema upgrade, populate_options() deletes all expired transients
and their corresponding transient timeouts. The queries produce the
following errors:
Error running :
DELETE a, b FROM wp_options a, wp_options b
WHERE a.option_name LIKE '\_transient\_%'
AND a.option_name NOT LIKE '\_transient\_timeout\_%'
AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
AND b.option_value < 1433110465
---- converted to ----
DELETE a, b FROM wp_options a, wp_options b
WHERE a.option_name LIKE '\_transient\_%'
AND a.option_name NOT LIKE '\_transient\_timeout\_%'
AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
AND b.option_value < 1433110465
----> ERROR: syntax error at or near "a"
LINE 1: DELETE a, b FROM wp_options a, wp_options b
^
---------------------
Error running :
DELETE a, b FROM wp_options a, wp_options b
WHERE a.option_name LIKE '\_site\_transient\_%'
AND a.option_name NOT LIKE '\_site\_transient\_timeout\_%'
AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
AND b.option_value < 1433110465
---- converted to ----
DELETE a, b FROM wp_options a, wp_options b
WHERE a.option_name LIKE '\_site\_transient\_%'
AND a.option_name NOT LIKE '\_site\_transient\_timeout\_%'
AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
AND b.option_value < 1433110465
----> ERROR: syntax error at or near "a"
LINE 1: DELETE a, b FROM wp_options a, wp_options b
^
---------------------
Since PostgreSQL does not support multi-table DELETE statements,
significant rewriting must be done. Since I could not think of a good
generic way to perform this rewriting, recognize this statement
specifically and provide an alternative version.
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Kevin Locke
935a99c429