Meta Query
$meta_query = array( 'relation' => 'AND', array( 'key' => 'slider_show', 'value' => '1', 'compare' => '=', 'type' => 'NUMERIC', ), array( 'key' => 'hide_post_homepage', 'compare' => '=', 'type' => 'NUMERIC', ), array( 'key' => 'post_format_type', 'value' => 'editorial', 'compare' => '!=', 'type' => 'CHAR', ), array( 'key' => 'slider_importance', 'compare' => '>=', 'type' => 'NUMERIC', ), );