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Split the main WP_Query posts query into two queries to avoid temp tables. Leverage cache to avoid second query in persistent cache environments. Props scribu, cheald, prettyboymp. see #18536

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git-svn-id: https://develop.svn.wordpress.org/trunk@19918 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Ryan Boren
2012-02-14 15:09:35 +00:00
parent 5055a133d5
commit 021c55798e
5 changed files with 88 additions and 25 deletions
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wp-includes/post.php
+23
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@@ -5318,3 +5318,26 @@ function _update_term_count_on_transition_post_status( $new_status, $old_status,
wp_update_term_count( $tt_ids, $taxonomy );
}
}
/**
* Adds any posts from the given ids to the cache that do not already exist in cache
*
* @since 3.4.0
*
* @access private
*
* @param array $post_ids ID list
* @param bool $update_term_cache Whether to update the term cache. Default is true.
* @param bool $update_meta_cache Whether to update the meta cache. Default is true.
*/
function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
global $wpdb;
$non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
if ( !empty( $non_cached_ids ) ) {
$fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", join( ",", $non_cached_ids ) ) );
update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache );
}
}