get_meta_sql


      apply_filters_ref_array( 'get_meta_sql', array( $sql, $this->queries, $type, $primary_table, $primary_id_column, $context )

参数

(string[]) $sql Array containing the query's JOIN and WHERE clauses.

Required: 是
(array) $queries Array of meta queries.

Required: 是
(string) $type Type of meta. Possible values include but are not limited to 'post', 'comment', 'blog', 'term', and 'user'.

Required: 是
(string) $primary_table Primary table.

Required: 是
(string) $primary_id_column Primary column ID.

Required: 是
(object) $context The main query object that corresponds to the type, for example a `WP_Query`, `WP_User_Query`, or `WP_Site_Query`.

Required: 是

定义位置

相关方法: get_meta_sql get_tax_sql get_meta_keys _get_meta_table get_tags get_comments

get_meta_sql: 这个函数返回用于从数据库中检索元数据的SQL代码。它需要几个参数，包括要检索的元数据的类型和与之相关的对象的类型。

过滤元查询的生成的SQL。

return apply_filters_ref_array( 'get_meta_sql', array( $sql, $this->queries, $type, $primary_table, $primary_id_column, $context ) );