mihaibudiu commented on code in PR #4972:
URL: https://github.com/apache/calcite/pull/4972#discussion_r3314333451
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core/src/main/java/org/apache/calcite/sql2rel/SqlToRelConverter.java:
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@@ -1901,6 +1902,31 @@ public RelNode convertToSingleValueSubq(
}
}
+ /**
+ * Ensures that a comparison expression has matching operand types. If the
+ * operands have different type names, casts the right operand to match the
+ * left operand's type. This handles the case where type coercion is disabled
+ * and the IN-to-OR expansion produces comparisons with mismatched types
+ * (e.g., DATE = CHAR).
+ */
+ private RexNode ensureComparisonTypes(RexNode node) {
Review Comment:
does this produce the same result as type coercion would?
Why not the leastRestrictive type?
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