mohammadnaqvi04 commented on code in PR #25391:
URL: https://github.com/apache/datafusion/pull/25391#discussion_r4321153841
##########
datafusion/optimizer/src/decorrelate.rs:
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@@ -351,6 +368,49 @@ impl TreeNodeRewriter for PullUpCorrelatedExpr {
None
};
+ if self.pull_up_having_expr.is_some()
Review Comment:
Also took the suggested diff here. I added `self.exists_sub_query &&` to the
merge condition, so a scalar subquery's stacked filter no longer merges into
`pull_up_having_expr` and leaks a materialized default instead of NULL.
Verified against your repro.
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