danny0405 commented on a change in pull request #1724: [CALCITE-3675] SQL to 
Rel conversion is broken for coalesce on nullable field
URL: https://github.com/apache/calcite/pull/1724#discussion_r364230508
 
 

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 File path: core/src/main/java/org/apache/calcite/sql/fun/SqlCaseOperator.java
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 @@ -216,9 +219,7 @@ public RelDataType inferReturnType(
       SqlOperatorBinding opBinding) {
     // REVIEW jvs 4-June-2005:  can't these be unified?
     if (!(opBinding instanceof SqlCallBinding)) {
-      return inferTypeFromOperands(
 
 Review comment:
   Just as the comment addressed, can we unify the call bindings ?

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