RE: Join of 2 subqueries – SQLServerCentral

SSC Guru

Points: 186127

July 17, 2013 at 7:33 am

daniness (7/17/2013)
Chris,
What I'm trying to get from this query are records that are in common to both subqueries. This would tell me which records are responsible for the duplicate error I mentioned earlier.

Which columns are included in the key which is responsible for generating the dupes error?

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden