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Tuesday, August 18, 2009

Multiple Column Subqueries (Oracle)

I recently had to do something like this in an application, and I had to look it up to see if it was even possible. I knew you could do this with a single value, but was skeptical if multiple columns could be done this easily.

For my own benefit, I am posting the basic syntax for next time I need to do it. Replace your table names where t1 and t2 are, column names for c1, c2, c3, etc. I did this in Oracle, but it may work the same or very similar in other databases.

WHERE (c1,c2,c3)
IN (
SELECT t2.c1,t2.c2,t2.c3

For reference, I found my answer at:

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