On Fri, Feb 09, 2018 at 08:30:49AM -0800, Andres Freund wrote: > On 2018-02-09 09:42:41 -0500, Tom Lane wrote: >> It doesn't look significantly different to me than the restriction >> that you can't have sub-selects in CHECK expressions, index >> expressions, etc. Obviously we need a clean failure like you get for >> those cases. But otherwise it's an OK restriction that stems from >> exactly the same cause: we do not want to invoke the full planner in >> this context (and even if we did, we don't want to use the full >> executor to execute the result). > > +1
+1. -- Michael
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