Hello!
Question is what's the easiest way to implement conditional execution
of insert/update-s via psql interface?
As far as I know there's following options:
1) create function in procedural language (plpgsql, for example);
then call that function
2) update ... where <conditon>; insert ... (select ... where <condition>);
not sure here if <condition> can be unrelated to the table being modified
by update/insert statement;
Are there alternatives?
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