sql: disallow replacement MV depending on its target #34528
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This commit adds an additional check in materialzied view planning, to reject replacement MVs whose queries depend on the replacement target. We can't allow those because after applying the replacement we would end up with an object that depends on itself.
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This PR adds an additional check in materialzied view planning, to reject replacement MVs whose queries depend on the replacement target. We can't allow those because after applying the replacement we would end up with an object that depends on itself.
Motivation
Fixes https://github.com/MaterializeInc/database-issues/issues/9962
Checklist
$T ⇔ Proto$Tmapping (possibly in a backwards-incompatible way), then it is tagged with aT-protolabel.