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
--
Adrian Klaver
adrian.klaver@aklaver.com