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(merge: d0fb796 d471bcb)
Additional steps to help ensure that scalar subqueries are only evaluated
authordrh <drh@noemail.net>
Mon, 31 Dec 2018 20:39:37 +0000 (20:39 +0000)
committerdrh <drh@noemail.net>
Mon, 31 Dec 2018 20:39:37 +0000 (20:39 +0000)
commitf01dae1f3218f6ff16ad3004554ab6bcede33cd8
tree535a64ba902ca54e7b81cbb536a3871133f2d113tree
parentd0fb7960cea5d26a40a0a7ca00c4274545e96efecommit | diff
parentd471bcb3964e8ee417dfb45acee824dd77238acccommit | diff
Additional steps to help ensure that scalar subqueries are only evaluated
once even if they are used in multiple places within the query.  This fixes
a performance regression reported on the mailing list and caused by
check-in [531eca6104e41e43] which was a fix for ticket
[787fa716be3a7f650c]. Think of this check-in as an improved fix for
that ticket.

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