Mysql-目的の結果を得るためにこの検索クエリを変更するのを手伝ってください

このクエリはあなたに役立つと思います：

SET @tag1 = 1, @tag2 = 4; -- Setting some user variables to see where the ids go. (you can put the values in the query)

SELECT wtagrels.id_wc,
  SUM(DISTINCT( wtagrels.id_tag [email protected] OR wtagrels.id_tutor [email protected])) AS key_1_total_matches,
  SUM(DISTINCT( wtagrels.id_tag [email protected] OR wtagrels.id_tutor [email protected])) AS key_2_total_matches
FROM   all_tag_relations AS wtagrels
WHERE  ( wtagrels.id_tag [email protected] OR wtagrels.id_tag [email protected] )
GROUP  BY wtagrels.id_wc
HAVING key_1_total_matches = 1 AND key_2_total_matches = 1
LIMIT  0, 20

id_wc = 1を返します 。
（6、3）の場合、クエリは何も返しません。