[BUG FOUND SOLUTION] – Problem when using custom prefix

i’m using it with wordpress v3.9 and found problem when using custom prefix table (not using “wp_” prefix)

The problem lies in category filter it using plain wp_ query:

$rows = $wpdb->get_results("SELECT wp_terms.name, wp_term_taxonomy.term_taxonomy_id
									FROM wp_terms, wp_term_taxonomy
									WHERE wp_terms.term_id=wp_term_taxonomy.term_id
									AND wp_term_taxonomy.taxonomy='category' ");

Solution:
Around line 114, change:

$table_name = $wpdb->prefix . "terms";

		$rows = $wpdb->get_results("SELECT wp_terms.name, wp_term_taxonomy.term_taxonomy_id
									FROM wp_terms, wp_term_taxonomy
									WHERE wp_terms.term_id=wp_term_taxonomy.term_id
									AND wp_term_taxonomy.taxonomy='category' ");

TO

$table_name = $wpdb->prefix . "terms";
		$table_name_taxonomy = $wpdb->prefix . "term";

		$rows = $wpdb->get_results("SELECT ".$table_name.".name, ".$table_name_taxonomy."_taxonomy.term_taxonomy_id
									FROM ".$table_name.", ".$table_name_taxonomy."_taxonomy
									WHERE ".$table_name.".term_id=".$table_name_taxonomy."_taxonomy.term_id
									AND ".$table_name_taxonomy."_taxonomy.taxonomy='category'");

Around line 138:
CHANGE:

$rows_id = $wpdb->get_results("SELECT term_taxonomy_id
										   FROM wp_term_relationships
										   ");

TO

$rows_id = $wpdb->get_results("SELECT term_taxonomy_id
										   FROM ".$table_name_taxonomy."_relationships
										   ");

Hope this helps

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