get_meta_sql

函数



      get_meta_sql ( $meta_query, $type, $primary_table, $primary_id_column, $context = null )

参数

(array)
$meta_query
A meta query.
Required: 是
(string)
$type
Type of meta.
Required: 是
(string)
$primary_table
Primary database table name.
Required: 是
(string)
$primary_id_column
Primary ID column name.
Required: 是
(object)
$context
Optional. The main query object
Required: 否

Default: null

返回值

(string[]|false) { Array containing JOIN and WHERE SQL clauses to append to the main query, or false if no table exists for the requested meta type. @type string $join SQL fragment to append to the main JOIN clause. @type string $where SQL fragment to append to the main WHERE clause. }

相关

WP_Meta_Query

定义位置

wp-includes/meta.php
, line 1242

引入: 3.2.0

弃用: –

Given a meta query, generates SQL clauses to be appended to a main query.

function get_meta_sql( $meta_query, $type, $primary_table, $primary_id_column, $context = null ) {
	$meta_query_obj = new WP_Meta_Query( $meta_query );
	return $meta_query_obj->get_sql( $type, $primary_table, $primary_id_column, $context );
}

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