我的查询在wordpress中返回null，我不知道为什么
问题描述：
What's wrong with this query? It always returns NULL.
$recipes = $wpdb->get_results(
"SELECT ID FROM ".$wpdb->posts." WHERE post_author = %d AND post_status IN ('draft','publish') AND post_type = 'recipes' ", $current_user->ID
);
答
get_results takes output type as second parameter. You're missing prepare method if you want to do it like this. It should be something like
$recipes = $wpdb->get_results($wpdb->prepare ("SELECT ID FROM ".$wpdb->posts."
WHERE post_author = %d
AND post_status IN ('draft','publish')
AND post_type = 'recipes' ", $current_user->ID));
答
Code:
global $post;
global $wpdb;
$sel_query = "SELECT id FROM ".$wpdb->prefix."posts WHERE post_author = ".$current_user->ID." AND post_status IN ('draft','publish') AND post_type = 'recipes' ";
$totaldata = $wpdb->get_results($sel_query);
return $totaldata;