On 2017-01-25 22:51:37 +0100, Pavel Stehule wrote: > 2017-01-25 22:40 GMT+01:00 Andres Freund <andres@anarazel.de>: > > > I afraid when I cannot to reuse a SRF infrastructure, I have to > > reimplement > > > it partially :( - mainly for usage in "ROWS FROM ()" > > > > The TableExpr implementation is based on SRF now. You and Alvaro propose > independent implementation like generic executor node. I am sceptic so > FunctionScan supports reading from generic executor node.
Why would it need to?
Simply - due consistency with any other functions that can returns rows.
Maybe I don't understand to Alvaro proposal well - I have a XMLTABLE function - TableExpr that looks like SRF function, has similar behave - returns more rows, but should be significantly different implemented, and should to have different limits - should not be used there and there ... It is hard to see consistency there for me.
