Ticket #10964: query.php.2.9.2.patch

wp-includes/query.php

@@ -1555 +1555 @@
 
                 // First let's clear some variables
                 $distinct = '';
+                $fields = "$wpdb->posts.ID"; // see #10964
+                $quick_fields = "$wpdb->posts.*";
                 $whichcat = '';
                 $whichauthor = '';
                 $whichmimetype = '';
+                $search = '';
+                $join = '';
                 $where = '';
+                $groupby = '';
+                $orderby = '';
                 $limits = '';
-                $join = '';
-                $search = '';
-                $groupby = '';
-                $fields = "$wpdb->posts.*";
                 $post_status_join = false;
                 $page = 1;
 
@@ -2207 +2209 @@
 
                 $orderby = $q['orderby'];
 
+                // Set up quick_* defaults from the standard placeholders, before filtering
+                $quick_distinct = $distinct;
+                $quick_join = $join;
+                $quick_where = $where;
+                $quick_groupby = $groupby;
+
                 // Apply post-paging filters on where and join.  Only plugins that
                 // manipulate paging queries should use these hooks.
                 if ( !$q['suppress_filters'] ) {
-                        $where = apply_filters('posts_where_paged', $where);
-                        $groupby = apply_filters('posts_groupby', $groupby);
-                        $join = apply_filters('posts_join_paged', $join);
+                        $distinct = apply_filters('posts_distinct', $distinct, false);
+                        $quick_distinct = apply_filters('posts_distinct', $quick_distinct, true);
+
+                        $fields = apply_filters('posts_fields', $fields, false);
+                        $quick_fields = apply_filters('posts_fields', $quick_fields, true);
+
+                        $join = apply_filters('posts_join_paged', $join, false);
+                        $quick_join = apply_filters('posts_join_paged', $quick_join, true);
+
+                        $where = apply_filters('posts_where_paged', $where, false);
+                        $quick_where = apply_filters('posts_where_paged', $quick_where, true);
+
+                        $groupby = apply_filters('posts_groupby', $groupby, false);
+                        $quick_groupby = apply_filters('posts_groupby', $quick_groupby, true);
+
                         $orderby = apply_filters('posts_orderby', $orderby);
-                        $distinct = apply_filters('posts_distinct', $distinct);
-                        $limits = apply_filters( 'post_limits', $limits );
-
-                        $fields = apply_filters('posts_fields', $fields);
+                        $limits = apply_filters( 'post_limits', $limits);
                 }
 
                 // Announce current selection parameters.  For use by caching plugins.
@@ -2225 +2242 @@
 
                 // Filter again for the benefit of caching plugins.  Regular plugins should use the hooks above.
                 if ( !$q['suppress_filters'] ) {
-                        $where = apply_filters('posts_where_request', $where);
-                        $groupby = apply_filters('posts_groupby_request', $groupby);
-                        $join = apply_filters('posts_join_request', $join);
+                        $distinct = apply_filters('posts_distinct_request', $distinct, false);
+                        $quick_distinct = apply_filters('posts_distinct_request', $quick_distinct, true);
+
+                        $fields = apply_filters('posts_fields_request', $fields, false);
+                        $quick_fields = apply_filters('posts_fields_request', $quick_fields, true);
+
+                        $join = apply_filters('posts_join_request', $join, false);
+                        $quick_join = apply_filters('posts_join_request', $quick_join, true);
+
+                        $where = apply_filters('posts_where_request', $where, false);
+                        $quick_where = apply_filters('posts_where_request', $quick_where, true);
+
+                        $groupby = apply_filters('posts_groupby_request', $groupby, false);
+                        $quick_groupby = apply_filters('posts_groupby_request', $quick_groupby, true);
+
                         $orderby = apply_filters('posts_orderby_request', $orderby);
-                        $distinct = apply_filters('posts_distinct_request', $distinct);
-                        $fields = apply_filters('posts_fields_request', $fields);
-                        $limits = apply_filters( 'post_limits_request', $limits );
+                        $limits = apply_filters( 'post_limits_request', $limits);
                 }
 
                 if ( ! empty($groupby) )
                         $groupby = 'GROUP BY ' . $groupby;
+                if ( ! empty($quick_groupby) )
+                        $quick_groupby = 'GROUP BY ' . $quick_groupby;
                 if ( !empty( $orderby ) )
                         $orderby = 'ORDER BY ' . $orderby;
                 $found_rows = '';
                 if ( !empty($limits) )
                         $found_rows = 'SQL_CALC_FOUND_ROWS';
 
-                $this->request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
-                if ( !$q['suppress_filters'] )
-                        $this->request = apply_filters('posts_request', $this->request);
+                if ( empty($limits) ) {
+                        // do a direct query, as there is no benefit in fetching a huge load of IDs in an IN clause
+                        $this->request = " SELECT $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby";
+                        $this->quick_request = " SELECT $quick_distinct $quick_fields FROM $wpdb->posts $quick_join WHERE 1=1 $quick_where $quick_groupby $orderby";
 
-                $this->posts = $wpdb->get_results($this->request);
+                        if ( !$q['suppress_filters'] ) {
+                                $this->request = apply_filters('posts_request', $this->request, false);
+                                $this->quick_request = apply_filters('posts_request', $this->quick_request, true);
+                        }
+
+                        $this->posts = $wpdb->get_results($this->quick_request);
+
+                        $this->found_posts = count($this->posts);
+                        $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
+                        $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
+                } else {
+                        $this->request = " SELECT $found_rows $distinct $fields FROM $wpdb->posts $join WHERE 1=1 $where $groupby $orderby $limits";
+                        if ( !$q['suppress_filters'] )
+                                $this->request = apply_filters('posts_request', $this->request);
+
+                        $post_ids = $wpdb->get_col($this->request);
+
+                        if ( !$post_ids ) {
+                                $this->found_posts = 0;
+                                $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
+                                $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
+
+                                $this->quick_request = " SELECT $quick_distinct $quick_fields FROM $wpdb->posts $quick_join WHERE 1=1 $quick_where $quick_groupby $orderby";
+                                if ( !$q['suppress_filters'] )
+                                        $this->quick_request = apply_filters('posts_request', $this->quick_request, true);
+                                $this->posts = array(); // no point in querying, since there are no posts
+                        } else {
+                                $found_posts_query = apply_filters( 'found_posts_query', 'SELECT FOUND_ROWS()' );
+                                $this->found_posts = $wpdb->get_var( $found_posts_query );
+                                $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
+                                $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
+
+                                $this->quick_request = " SELECT $quick_distinct $quick_fields FROM $wpdb->posts $quick_join WHERE 1 = 1 $quick_where AND $wpdb->posts.ID IN ( " . implode(',', $post_ids) . " ) $quick_groupby ORDER BY FIELD( $wpdb->posts.ID, " . implode(',', $post_ids) . ") ";
+
+                                if ( !$q['suppress_filters'] )
+                                        $this->quick_request = apply_filters('posts_request', $this->quick_request, true);
+
+                                $this->posts = $wpdb->get_results($this->quick_request);
+                        }
+                }
+
                 // Raw results filter.  Prior to status checks.
                 if ( !$q['suppress_filters'] )
                         $this->posts = apply_filters('posts_results', $this->posts);
@@ -2264 +2334 @@
                         $this->comment_count = count($this->comments);
                 }
 
-                if ( !empty($limits) ) {
-                        $found_posts_query = apply_filters( 'found_posts_query', 'SELECT FOUND_ROWS()' );
-                        $this->found_posts = $wpdb->get_var( $found_posts_query );
-                        $this->found_posts = apply_filters( 'found_posts', $this->found_posts );
-                        $this->max_num_pages = ceil($this->found_posts / $q['posts_per_page']);
-                }
-
                 // Check post status to determine if post should be displayed.
                 if ( !empty($this->posts) && ($this->is_single || $this->is_page) ) {
                         $status = get_post_status($this->posts[0]);