SELECT statement is an integral part of SQL. The result obtained by a SELECT statement has always been referred as SET. In this way, it should support all SET operations.
What I was amazed to know that T-SQL does not support MINUS operator. MINUS is one of the SET operations. There are definitely some workarounds that you can think of. But all of them asks you to change the natural way of getting the result set using some TECHNIQUES which I don't like.
What do you say about this? Do you want to support this or you have some alternate thoughts about this?
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