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Comments: Avoid reparenting during post deletion.

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Delete comments in a descending order by comment ID when deleting a post.

This avoids the expense of additional database queries required to re-parent threaded comments that are themselves about to be deleted.

Props Mte90, andraganescu, johnbillion, hellofromTonya, peterwilsoncc.
Fixes #37703.



git-svn-id: https://develop.svn.wordpress.org/trunk@52015 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Peter Wilson 2021-11-04 23:55:21 +00:00
parent 243149b2c0
commit 4a67a9774a
1 changed files with 2 additions and 2 deletions
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4
src/wp-includes/post.php
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@ -3236,7 +3236,7 @@ function wp_delete_post( $postid = 0, $force_delete = false ) {
wp_defer_comment_counting( true );
$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $postid ) );
$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $postid ) );
foreach ( $comment_ids as $comment_id ) {
wp_delete_comment( $comment_id, true );
}
@ -6194,7 +6194,7 @@ function wp_delete_attachment( $post_id, $force_delete = false ) {
wp_defer_comment_counting( true );
$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ) );
$comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d ORDER BY comment_ID DESC", $post_id ) );
foreach ( $comment_ids as $comment_id ) {
wp_delete_comment( $comment_id, true );
}