PHP WP_Meta_Query::get_sql方法代码示例

 /**
  * terms_clauses
  * Clause updates for term queries.
  *
  * @param array $pieces The pieces of the sql query
  * @param array $taxonomies The taxonomies for the query
  * @param array $arguments The arguments for the query
  *
  * @return array $pieces
  *
  * @access public
  * @static
  * @since 1.0
  */
 public static function terms_clauses($pieces = array(), $taxonomies = array(), $arguments = array())
 {
     if (!empty($arguments['meta_query'])) {
         $query = new WP_Meta_Query($arguments['meta_query']);
         $query->parse_query_vars($arguments);
         if (!empty($query->queries)) {
             $clauses = $query->get_sql('term', 'tt', 'term_id', $taxonomies);
             $pieces['join'] .= $clauses['join'];
             $pieces['where'] .= $clauses['where'];
         }
     }
     return $pieces;
 }

	/**
	 * @ticket 22096
	 */
	function test_empty_value_sql() {
		global $wpdb;

		$query = new WP_Meta_Query();

		$the_complex_query['meta_query'] = array(
			array( 'key' => 'my_first_key', 'value' => 'my_amazing_value' ),
			array( 'key' => 'my_second_key', 'compare' => 'NOT EXISTS' ),
			array( 'key' => 'my_third_key', 'value' => array( ), 'compare' => 'IN' ),
		);

		$query->parse_query_vars( $the_complex_query );

		$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );

		// We should have 2 joins - one for my_first_key and one for my_second_key
		$this->assertEquals( 2, substr_count( $sql['join'], 'INNER JOIN' ) );

		// The WHERE should check my_third_key against an unaliased table
		$this->assertEquals( 1, substr_count( $sql['where'], "$wpdb->postmeta.meta_key = 'my_third_key'" ) );

	}

//.........这里部分代码省略.........
    if (is_array($parent_query)) {
        if (!empty($parent_query['parent in'])) {
            $valid_values = array();
            foreach ($parent_query['parent in'] as $post_in_id) {
                if (is_numeric($post_in_id)) {
                    $valid_values[] = $post_in_id;
                }
            }
            $posts = implode(',', $valid_values);
            if (!empty($posts)) {
                $query_restrictions .= " AND relevanssi.doc IN (SELECT ID FROM {$wpdb->posts} WHERE post_parent IN ({$posts}))";
            }
            // Clean: $posts is checked to be integers
        }
        if (!empty($parent_query['parent not in'])) {
            $valid_values = array();
            foreach ($parent_query['parent not in'] as $post_not_in_id) {
                if (is_numeric($post_not_in_id)) {
                    $valid_values[] = $post_not_in_id;
                }
            }
            $posts = implode(',', $valid_values);
            if (!empty($posts)) {
                $query_restrictions .= " AND relevanssi.doc NOT IN (SELECT ID FROM {$wpdb->posts} WHERE post_parent IN ({$posts}))";
            }
            // Clean: $posts is checked to be integers
        }
    }
    if (is_array($meta_query)) {
        $meta_query_restrictions = "";
        $mq_vars = array('meta_query' => $meta_query);
        $mq = new WP_Meta_Query();
        $mq->parse_query_vars($mq_vars);
        $meta_sql = $mq->get_sql('post', 'relevanssi', 'doc');
        $meta_join = "";
        $meta_where = "";
        if ($meta_sql) {
            $meta_join = $meta_sql['join'];
            $meta_where = $meta_sql['where'];
        }
        $query_restrictions .= $meta_where;
    }
    if (!empty($date_query)) {
        if (is_object($date_query) && method_exists($date_query, 'get_sql')) {
            $sql = $date_query->get_sql();
            // AND ( the query itself )
            $query_restrictions .= " AND relevanssi.doc IN ( SELECT DISTINCT(ID) FROM {$wpdb->posts} WHERE 1 {$sql} )";
            // Clean: $sql generated by $date_query->get_sql() query
        }
    }
    if (!$post_type && get_option('relevanssi_respect_exclude') == 'on') {
        if (function_exists('get_post_types')) {
            $pt_1 = get_post_types(array('exclude_from_search' => '0'));
            $pt_2 = get_post_types(array('exclude_from_search' => false));
            $post_type = implode(',', array_merge($pt_1, $pt_2));
        }
    }
    if ($post_type) {
        if ($post_type == -1) {
            $post_type = null;
        }
        // Facetious sets post_type to -1 if not selected
        if (!is_array($post_type)) {
            $post_types = esc_sql(explode(',', $post_type));
        } else {
            $post_types = esc_sql($post_type);

//.........这里部分代码省略.........
                 $roles_clauses[] = array('key' => $wpdb->get_blog_prefix($blog_id) . 'capabilities', 'value' => '"' . $role . '"', 'compare' => 'LIKE');
             }
             $role_queries[] = $roles_clauses;
         }
         $role__in_clauses = array('relation' => 'OR');
         if (!empty($role__in)) {
             foreach ($role__in as $role) {
                 $role__in_clauses[] = array('key' => $wpdb->get_blog_prefix($blog_id) . 'capabilities', 'value' => '"' . $role . '"', 'compare' => 'LIKE');
             }
             $role_queries[] = $role__in_clauses;
         }
         $role__not_in_clauses = array('relation' => 'AND');
         if (!empty($role__not_in)) {
             foreach ($role__not_in as $role) {
                 $role__not_in_clauses[] = array('key' => $wpdb->get_blog_prefix($blog_id) . 'capabilities', 'value' => '"' . $role . '"', 'compare' => 'NOT LIKE');
             }
             $role_queries[] = $role__not_in_clauses;
         }
         // If there are no specific roles named, make sure the user is a member of the site.
         if (empty($role_queries)) {
             $role_queries[] = array('key' => $wpdb->get_blog_prefix($blog_id) . 'capabilities', 'compare' => 'EXISTS');
         }
         // Specify that role queries should be joined with AND.
         $role_queries['relation'] = 'AND';
         if (empty($this->meta_query->queries)) {
             $this->meta_query->queries = $role_queries;
         } else {
             // Append the cap query to the original queries and reparse the query.
             $this->meta_query->queries = array('relation' => 'AND', array($this->meta_query->queries, $role_queries));
         }
         $this->meta_query->parse_query_vars($this->meta_query->queries);
     }
     if (!empty($this->meta_query->queries)) {
         $clauses = $this->meta_query->get_sql('user', $wpdb->users, 'ID', $this);
         $this->query_from .= $clauses['join'];
         $this->query_where .= $clauses['where'];
         if ($this->meta_query->has_or_relation()) {
             $this->query_fields = 'DISTINCT ' . $this->query_fields;
         }
     }
     // sorting
     $qv['order'] = isset($qv['order']) ? strtoupper($qv['order']) : '';
     $order = $this->parse_order($qv['order']);
     if (empty($qv['orderby'])) {
         // Default order is by 'user_login'.
         $ordersby = array('user_login' => $order);
     } elseif (is_array($qv['orderby'])) {
         $ordersby = $qv['orderby'];
     } else {
         // 'orderby' values may be a comma- or space-separated list.
         $ordersby = preg_split('/[,\\s]+/', $qv['orderby']);
     }
     $orderby_array = array();
     foreach ($ordersby as $_key => $_value) {
         if (!$_value) {
             continue;
         }
         if (is_int($_key)) {
             // Integer key means this is a flat array of 'orderby' fields.
             $_orderby = $_value;
             $_order = $order;
         } else {
             // Non-integer key means this the key is the field and the value is ASC/DESC.
             $_orderby = $_key;
             $_order = $_value;
         }

//.........这里部分代码省略.........
         $this->query_fields = 'SQL_CALC_FOUND_ROWS ' . $this->query_fields;
     }
     $this->query_from = "FROM {$wpdb->users}";
     $this->query_where = "WHERE 1=1";
     // sorting
     if (in_array($qv['orderby'], array('nicename', 'email', 'url', 'registered'))) {
         $orderby = 'user_' . $qv['orderby'];
     } elseif (in_array($qv['orderby'], array('user_nicename', 'user_email', 'user_url', 'user_registered'))) {
         $orderby = $qv['orderby'];
     } elseif ('name' == $qv['orderby'] || 'display_name' == $qv['orderby']) {
         $orderby = 'display_name';
     } elseif ('post_count' == $qv['orderby']) {
         // todo: avoid the JOIN
         $where = get_posts_by_author_sql('post');
         $this->query_from .= " LEFT OUTER JOIN (\n\t\t\t\tSELECT post_author, COUNT(*) as post_count\n\t\t\t\tFROM {$wpdb->posts}\n\t\t\t\t{$where}\n\t\t\t\tGROUP BY post_author\n\t\t\t) p ON ({$wpdb->users}.ID = p.post_author)\n\t\t\t";
         $orderby = 'post_count';
     } elseif ('ID' == $qv['orderby'] || 'id' == $qv['orderby']) {
         $orderby = 'ID';
     } else {
         $orderby = 'user_login';
     }
     $qv['order'] = strtoupper($qv['order']);
     if ('ASC' == $qv['order']) {
         $order = 'ASC';
     } else {
         $order = 'DESC';
     }
     $this->query_orderby = "ORDER BY {$orderby} {$order}";
     // limit
     if ($qv['number']) {
         if ($qv['offset']) {
             $this->query_limit = $wpdb->prepare("LIMIT %d, %d", $qv['offset'], $qv['number']);
         } else {
             $this->query_limit = $wpdb->prepare("LIMIT %d", $qv['number']);
         }
     }
     $search = trim($qv['search']);
     if ($search) {
         $leading_wild = ltrim($search, '*') != $search;
         $trailing_wild = rtrim($search, '*') != $search;
         if ($leading_wild && $trailing_wild) {
             $wild = 'both';
         } elseif ($leading_wild) {
             $wild = 'leading';
         } elseif ($trailing_wild) {
             $wild = 'trailing';
         } else {
             $wild = false;
         }
         if ($wild) {
             $search = trim($search, '*');
         }
         if (false !== strpos($search, '@')) {
             $search_columns = array('user_email');
         } elseif (is_numeric($search)) {
             $search_columns = array('user_login', 'ID');
         } elseif (preg_match('|^https?://|', $search)) {
             $search_columns = array('user_url');
         } else {
             $search_columns = array('user_login', 'user_nicename');
         }
         $this->query_where .= $this->get_search_sql($search, $search_columns, $wild);
     }
     $blog_id = absint($qv['blog_id']);
     if ('authors' == $qv['who'] && $blog_id) {
         $qv['meta_key'] = $wpdb->get_blog_prefix($blog_id) . 'user_level';
         $qv['meta_value'] = 0;
         $qv['meta_compare'] = '!=';
         $qv['blog_id'] = $blog_id = 0;
         // Prevent extra meta query
     }
     $role = trim($qv['role']);
     if ($blog_id && ($role || is_multisite())) {
         $cap_meta_query = array();
         $cap_meta_query['key'] = $wpdb->get_blog_prefix($blog_id) . 'capabilities';
         if ($role) {
             $cap_meta_query['value'] = '"' . $role . '"';
             $cap_meta_query['compare'] = 'like';
         }
         $qv['meta_query'][] = $cap_meta_query;
     }
     $meta_query = new WP_Meta_Query();
     $meta_query->parse_query_vars($qv);
     if (!empty($meta_query->queries)) {
         $clauses = $meta_query->get_sql('user', $wpdb->users, 'ID', $this);
         $this->query_from .= $clauses['join'];
         $this->query_where .= $clauses['where'];
         if ('OR' == $meta_query->relation) {
             $this->query_fields = 'DISTINCT ' . $this->query_fields;
         }
     }
     if (!empty($qv['include'])) {
         $ids = implode(',', wp_parse_id_list($qv['include']));
         $this->query_where .= " AND {$wpdb->users}.ID IN ({$ids})";
     } elseif (!empty($qv['exclude'])) {
         $ids = implode(',', wp_parse_id_list($qv['exclude']));
         $this->query_where .= " AND {$wpdb->users}.ID NOT IN ({$ids})";
     }
     do_action_ref_array('pre_user_query', array(&$this));
 }

 /**
  * Get the SQL for the 'meta_query' param in BP_Messages_Thread::get_current_threads_for_user().
  *
  * We use WP_Meta_Query to do the heavy lifting of parsing the meta_query array
  * and creating the necessary SQL clauses.
  *
  * @since 2.2.0
  *
  * @param array $meta_query An array of meta_query filters. See the
  *                          documentation for WP_Meta_Query for details.
  *
  * @return array $sql_array 'join' and 'where' clauses.
  */
 public static function get_meta_query_sql($meta_query = array())
 {
     global $wpdb;
     $sql_array = array('join' => '', 'where' => '');
     if (!empty($meta_query)) {
         $meta_query = new WP_Meta_Query($meta_query);
         // WP_Meta_Query expects the table name at
         // $wpdb->messagemeta
         $wpdb->messagemeta = buddypress()->messages->table_name_meta;
         return $meta_query->get_sql('message', 'm', 'id');
     }
     return $sql_array;
 }

 /**
  * Filter `term_clauses` and add support for a `meta_query` argument
  *
  * @since 0.1.0
  *
  * @param array $pieces     Terms query SQL clauses.
  * @param array $taxonomies An array of taxonomies.
  * @param array $args       An array of terms query arguments.
  *
  * @return Array of query pieces, maybe modifed
  */
 public function terms_clauses($pieces = array(), $taxonomies = array(), $args = array())
 {
     // Maybe do a meta query
     if (!empty($args['meta_query'])) {
         // Make doubly sure global database object is prepared
         $this->add_termmeta_to_db_object();
         // Get the meta query parts
         $meta_query = new WP_Meta_Query($args['meta_query']);
         $meta_query->parse_query_vars($args);
         // Combine pieces & meta-query clauses
         if (!empty($meta_query->queries)) {
             /**
              * It's possible in a future version of WordPress that our
              * `term_id` usage might need to be swapped to `term_taxonomy_id`.
              */
             $meta_clauses = $meta_query->get_sql('term', 'tt', 'term_id', $taxonomies);
             $pieces['join'] .= $meta_clauses['join'];
             $pieces['where'] .= $meta_clauses['where'];
         }
     }
     // Return possibly modified pieces array
     return $pieces;
 }

function hm_add_term_meta_query_support($pieces, $taxonomies, $args)
{
    if (empty($args['meta_query'])) {
        return $pieces;
    }
    $meta_query = new WP_Meta_Query($args['meta_query']);
    $sql = $meta_query->get_sql('term', 't', 'term_id');
    if (!$sql) {
        return $pieces;
    }
    $pieces['join'] .= $sql['join'];
    $pieces['where'] .= $sql['where'];
    return $pieces;
}

 /**
  * Count products within certain terms, taking the main WP query into consideration.
  * @param  array $term_ids
  * @param  string $taxonomy
  * @param  string $query_type
  * @return array
  */
 protected function get_filtered_term_product_counts($term_ids, $taxonomy, $query_type)
 {
     global $wpdb;
     $tax_query = WC_Query::get_main_tax_query();
     $meta_query = WC_Query::get_main_meta_query();
     if ('or' === $query_type) {
         foreach ($tax_query as $key => $query) {
             if ($taxonomy === $query['taxonomy']) {
                 unset($tax_query[$key]);
             }
         }
     }
     $meta_query = new WP_Meta_Query($meta_query);
     $tax_query = new WP_Tax_Query($tax_query);
     $meta_query_sql = $meta_query->get_sql('post', $wpdb->posts, 'ID');
     $tax_query_sql = $tax_query->get_sql($wpdb->posts, 'ID');
     $sql = "\n\t\t\tSELECT COUNT( {$wpdb->posts}.ID ) as term_count, term_count_relationships.term_taxonomy_id as term_count_id FROM {$wpdb->posts}\n\t\t\tINNER JOIN {$wpdb->term_relationships} AS term_count_relationships ON ({$wpdb->posts}.ID = term_count_relationships.object_id)\n\t\t\t" . $tax_query_sql['join'] . $meta_query_sql['join'] . "\n\t\t\tWHERE {$wpdb->posts}.post_type = 'product' AND {$wpdb->posts}.post_status = 'publish'\n\t\t\t" . $tax_query_sql['where'] . $meta_query_sql['where'] . "\n\t\t\tAND term_count_relationships.term_taxonomy_id IN (" . implode(',', array_map('absint', $term_ids)) . ")\n\t\t\tGROUP BY term_count_relationships.term_taxonomy_id;\n\t\t";
     $results = $wpdb->get_results($sql);
     return wp_list_pluck($results, 'term_count', 'term_count_id');
 }

 function test_empty_compare()
 {
     global $wpdb;
     $query = new WP_Meta_Query(array('relation' => 'OR', array('key' => 'exclude', 'compare' => ''), array('key' => 'exclude', 'compare' => '!=', 'value' => '1')));
     $sql = $query->get_sql('post', $wpdb->posts, 'ID', $this);
     $this->assertContains("{$wpdb->postmeta}.meta_key = 'exclude'\nOR", $sql['where']);
     $this->assertNotContains("{$wpdb->postmeta}.post_id IS NULL", $sql['where']);
 }

 /**
  * Inject the meta_query SQL in SearchWP's WHERE
  *
  * @since 2.6
  *
  * @param $sql
  * @param $engine
  *
  * @return string
  */
 function meta_where($sql, $engine)
 {
     if ($engine != $this->engine || empty($this->meta_query) || !is_array($this->meta_query)) {
         return $sql;
     }
     global $wpdb;
     $meta_query = new WP_Meta_Query($this->meta_query);
     $mq_sql = $meta_query->get_sql('post', $wpdb->posts, 'ID', null);
     return $sql . $mq_sql['where'];
 }

 /**
  * Count products after other filters have occured by adjusting the main query.
  * @param  int $rating
  * @return int
  */
 protected function get_filtered_product_count($rating)
 {
     global $wpdb;
     $tax_query = WC_Query::get_main_tax_query();
     $meta_query = WC_Query::get_main_meta_query();
     // Unset current rating filter
     foreach ($meta_query as $key => $query) {
         if (!empty($query['rating_filter'])) {
             unset($meta_query[$key]);
         }
     }
     // Set new rating filter
     $meta_query[] = array('key' => '_wc_average_rating', 'value' => $rating, 'compare' => '>=', 'type' => 'DECIMAL', 'rating_filter' => true);
     $meta_query = new WP_Meta_Query($meta_query);
     $tax_query = new WP_Tax_Query($tax_query);
     $meta_query_sql = $meta_query->get_sql('post', $wpdb->posts, 'ID');
     $tax_query_sql = $tax_query->get_sql($wpdb->posts, 'ID');
     $sql = "SELECT COUNT( {$wpdb->posts}.ID ) FROM {$wpdb->posts} ";
     $sql .= $tax_query_sql['join'] . $meta_query_sql['join'];
     $sql .= " WHERE {$wpdb->posts}.post_type = 'product' AND {$wpdb->posts}.post_status = 'publish' ";
     $sql .= $tax_query_sql['where'] . $meta_query_sql['where'];
     return absint($wpdb->get_var($sql));
 }

	/**
	 * @ticket 22967
	 */
	function test_null_value_sql() {
		global $wpdb;

		$query = new WP_Meta_Query( array(
			array( 'key' => 'abc', 'value' => null, 'compare' => '=' )
		) );
		$sql = $query->get_sql( 'post', $wpdb->posts, 'ID', $this );

		$this->assertEquals( 1, substr_count( $sql['where'], "CAST($wpdb->postmeta.meta_value AS CHAR) = '')" ) );
	}

 /**
  * Get the SQL for the 'meta_query' param in BP_Activity_Activity::get()
  *
  * We use WP_Meta_Query to do the heavy lifting of parsing the
  * meta_query array and creating the necessary SQL clauses. However,
  * since BP_Activity_Activity::get() builds its SQL differently than
  * WP_Query, we have to alter the return value (stripping the leading
  * AND keyword from the 'where' clause).
  *
  * @since 1.8.0
  *
  * @param array $meta_query An array of meta_query filters. See the
  *                          documentation for {@link WP_Meta_Query} for details.
  * @return array $sql_array 'join' and 'where' clauses.
  */
 protected static function get_meta_query_sql($meta_query = array())
 {
     global $wpdb;
     $sql_array = array('join' => '', 'where' => '');
     if (!empty($meta_query)) {
         $groups_meta_query = new WP_Meta_Query($meta_query);
         // WP_Meta_Query expects the table name at
         // $wpdb->group.
         $wpdb->groupmeta = buddypress()->groups->table_name_groupmeta;
         $meta_sql = $groups_meta_query->get_sql('group', 'g', 'id');
         // BP_Groups_Group::get uses the comma syntax for table
         // joins, which means that we have to do some regex to
         // convert the INNER JOIN and move the ON clause to a
         // WHERE condition
         //
         // @todo It may be better in the long run to refactor
         // the more general query syntax to accord better with
         // BP/WP convention.
         preg_match_all('/JOIN (.+?) ON/', $meta_sql['join'], $matches_a);
         preg_match_all('/ON \\((.+?)\\)/', $meta_sql['join'], $matches_b);
         if (!empty($matches_a[1]) && !empty($matches_b[1])) {
             $sql_array['join'] = implode(',', $matches_a[1]) . ', ';
             $sql_array['where'] = $meta_sql['where'] . ' AND ' . implode(' AND ', $matches_b[1]);
         }
     }
     return $sql_array;
 }

 /**
  * Count products within certain terms, taking the main WP query into consideration.
  *
  * @param  array  $term_ids
  * @param  string $taxonomy
  * @param  string $query_type
  * @return array
  */
 protected function get_filtered_term_product_counts($term_ids, $taxonomy, $query_type)
 {
     global $wpdb;
     $tax_query = WC_Query::get_main_tax_query();
     $meta_query = WC_Query::get_main_meta_query();
     if ('or' === $query_type) {
         foreach ($tax_query as $key => $query) {
             if (is_array($query) && $taxonomy === $query['taxonomy']) {
                 unset($tax_query[$key]);
             }
         }
     }
     $meta_query = new WP_Meta_Query($meta_query);
     $tax_query = new WP_Tax_Query($tax_query);
     $meta_query_sql = $meta_query->get_sql('post', $wpdb->posts, 'ID');
     $tax_query_sql = $tax_query->get_sql($wpdb->posts, 'ID');
     // Generate query
     $query = array();
     $query['select'] = "SELECT COUNT( DISTINCT {$wpdb->posts}.ID ) as term_count, terms.term_id as term_count_id";
     $query['from'] = "FROM {$wpdb->posts}";
     $query['join'] = "\n\t\t\tINNER JOIN {$wpdb->term_relationships} AS term_relationships ON {$wpdb->posts}.ID = term_relationships.object_id\n\t\t\tINNER JOIN {$wpdb->term_taxonomy} AS term_taxonomy USING( term_taxonomy_id )\n\t\t\tINNER JOIN {$wpdb->terms} AS terms USING( term_id )\n\t\t\t" . $tax_query_sql['join'] . $meta_query_sql['join'];
     $query['where'] = "\n\t\t\tWHERE {$wpdb->posts}.post_type IN ( 'product' )\n\t\t\tAND {$wpdb->posts}.post_status = 'publish'\n\t\t\t" . $tax_query_sql['where'] . $meta_query_sql['where'] . "\n\t\t\tAND terms.term_id IN (" . implode(',', array_map('absint', $term_ids)) . ")\n\t\t";
     if ($search = WC_Query::get_main_search_query_sql()) {
         $query['where'] .= ' AND ' . $search;
     }
     $query['group_by'] = "GROUP BY terms.term_id";
     $query = apply_filters('woocommerce_get_filtered_term_product_counts_query', $query);
     $query = implode(' ', $query);
     $results = $wpdb->get_results($query);
     return wp_list_pluck($results, 'term_count', 'term_count_id');
 }