How do I compare data in three tables and get the results that are same? - PeakU

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How do I compare data in three tables and get the results that are same?

I have 3 tables A,B,C.

A has 2 columns d,e
B has 1 column d
C has 1 column e

How do I compare these three columns in PostgreSQL? If both column d, e match then update data, else insert data.

over 4 years ago · Santiago Trujillo

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