select CategoryID, istopic from (
SELECT
CategoryID,
EXISTS (SELECT * from topics_equivalence te WHERE te.categoryid=acl.categoryid) as istopic
FROM
eZArticle_ArticleCategoryLink acl
WHERE
acl.ArticleID=55935
) as subquery select CategoryID, istopic from (
SELECT
CategoryID,
EXISTS (SELECT * from topics_equivalence te WHERE te.categoryid=acl.categoryid) as istopic
FROM
eZArticle_ArticleCategoryLink acl
WHERE
acl.ArticleID=63362
) as subquery select CategoryID, istopic from (
SELECT
CategoryID,
EXISTS (SELECT * from topics_equivalence te WHERE te.categoryid=acl.categoryid) as istopic
FROM
eZArticle_ArticleCategoryLink acl
WHERE
acl.ArticleID=83065
) as subquery