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1
vote
4answers
104 views

is stored procedure having multiple UNION efficient than running all SQL's in parallel?

I have below in my stored proc if then SELECT TABLE1.COLUMN1,TABLE1.COLUMN2,TABLE1.COLUMN3,TABLE1.COLUMN4 FROM TABLE1,TABLE2 where criteria1 (covers functionality 1) UNION SELECT ...
0
votes
0answers
57 views

Stable, Hash Based Symmetrical Difference

A lot of thought went into the implementation of the set algorithms in LINQ: Distinct, Except, Intersect and Union. They guarantee that the items are returned in the same order that they appear in ...
2
votes
3answers
888 views

Is there any merit to using `union` to create an alias?

I've inherited a bit of code and saw something new. They have a data structure definition out in a .h file, and in various local files they'll declare: union globalStructOstuff localVar; Is there ...
15
votes
9answers
1k views

Are you a member of a trade union? [closed]

Are you a member of a trade union? Why? Why not? If you are, and don't mind mentioning it, which one? Do you know of any programmers who were helped by being in a union, or would have been helped by ...