Hi, I wonder if anyone can help.

I'd like to execute a SQL query that performs an action on all the
(unrelated) tables that I select. The following query doesn't work, but
the subselect (which works) shows what I'm trying to do. All tables have
an identical column called id_num.

delete from 
(select tablename from pg_tables where schemaname = 'public')
where id_num = null

I'd appreciate any advice.


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