After some thought and experimentation, the best fix seems to be to
eliminate the ambiguity by wrapping subquery outputs in PlaceHolderVars
whenever there is a risk of confusion. The attached crude patch fixes
both test cases. It needs work (more comments and a regression test
case would be good), but barring objection I'll push forward with doing
it this way.
Thank you, your patch fixes original query too.
--
Teodor Sigaev E-mail: teo...@sigaev.ru
WWW: http://www.sigaev.ru/
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