On 05/08/2017 02:56 PM, Patrick B wrote:
Hi guys, I have two tables that supports the same data, but different table DDL (We are migrating all the data from one to another). What I need is basically: 1. Query looks for the data on table A, 2. if it doesn't find it on table A, go look for it on table B Now, how could I do that in a Select? Can you please provide some examples?
If you can provide some information: 1) The table schema 2) How the data is related between the two tables.
I'm using PostgreSQL 9.1. Thanks Patrick
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