juntaozhang commented on code in PR #4353:
URL: https://github.com/apache/calcite/pull/4353#discussion_r2070961658
##########
core/src/main/java/org/apache/calcite/sql/validate/implicit/TypeCoercionImpl.java:
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@@ -383,11 +384,16 @@ protected boolean booleanEquality(SqlCallBinding binding,
}
/**
- * CASE and COALESCE type coercion, collect all the branches types including
then
+ * CASE WHEN and COALESCE type coercion, collect all the branches types
including then
* operands and else operands to find a common type, then cast the operands
to the common type
* when needed.
*/
@Override public boolean caseWhenCoercion(SqlCallBinding callBinding) {
+ if (!(callBinding.getCall() instanceof SqlCase)) {
Review Comment:
Yeal, very good proposal.
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