Skip to content

Hardcode query to remove transients as per issue #26 #58

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
stuartlangridge wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Hardcode query to remove transients as per issue #26 #58

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
55 changes: 55 additions & 0 deletions src/db.php
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -3619,6 +3619,9 @@ private function delete_workaround()
global $wpdb;
$pattern = "DELETE o1 FROM $wpdb->options AS o1 JOIN $wpdb->options AS o2";
$pattern2 = "DELETE a, b FROM $wpdb->sitemeta AS a, $wpdb->sitemeta AS b";
$pattern3_line1 = "DELETE a, b FROM $wpdb->options a, $wpdb->options b"; // https://github.com/aaemnnosttv/wp-sqlite-db/issues/26
$pattern3_transient_line = "WHERE a.option_name LIKE '_transient_%'";
$pattern3_site_transient_line = "WHERE a.option_name LIKE '_site_transient_%'";
$rewritten = "DELETE FROM $wpdb->options WHERE option_id IN (SELECT MIN(option_id) FROM $wpdb->options GROUP BY option_name HAVING COUNT(*) > 1)";
if (stripos($this->_query, $pattern) !== false) {
$this->_query = $rewritten;
Expand All @@ -3633,6 +3636,58 @@ private function delete_workaround()
}
$rewritten = "DELETE FROM $wpdb->sitemeta WHERE meta_id IN (" . implode(',', $ids_to_delete) . ")";
$this->_query = $rewritten;
} elseif (stripos($this->_query, $pattern3_line1) !== false && stripos($this->_query, $pattern3_transient_line) !== false) {
/* query was
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 < 1677325977
SQLite does not support MySQL's Multiple-Table Syntax for DELETE
(https://dev.mysql.com/doc/refman/8.0/en/delete.html)
Rewrite the query */
$parts = preg_split("/\s+/", $this->_query, -1, PREG_SPLIT_NO_EMPTY);
$timeval = end($parts);
$this->_query = "
delete from $wpdb->options
where rowid in (
select b.rowid from $wpdb->options a
inner join $wpdb->options b
on b.option_name = '_transient_timeout_' || SUBSTRING( a.option_name, 12 )
and b.option_value < $timeval
)
or rowid in (
select a.rowid from $wpdb->options a
inner join $wpdb->options b
on b.option_name = '_transient_timeout_' || SUBSTRING( a.option_name, 12 )
and b.option_value < $timeval
)";
} elseif (stripos($this->_query, $pattern3_line1) !== false && stripos($this->_query, $pattern3_site_transient_line) !== false) {
/* query was
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, 12 ) )
AND b.option_value < 1677325977
SQLite does not support MySQL's Multiple-Table Syntax for DELETE
(https://dev.mysql.com/doc/refman/8.0/en/delete.html)
Rewrite the query */
$parts = preg_split("/\s+/", $this->_query, -1, PREG_SPLIT_NO_EMPTY);
$timeval = end($parts);
$this->_query = "
delete from $wpdb->options
where rowid in (
select b.rowid from $wpdb->options a
inner join $wpdb->options b
on b.option_name = '_site_transient_timeout_' || SUBSTRING( a.option_name, 12 )
and b.option_value < $timeval
)
or rowid in (
select a.rowid from $wpdb->options a
inner join $wpdb->options b
on b.option_name = '_site_transient_timeout_' || SUBSTRING( a.option_name, 12 )
and b.option_value < $timeval
)";
}
}

Expand Down