bvarghese1 commented on code in PR #23520:
URL: https://github.com/apache/flink/pull/23520#discussion_r1369044944
##########
flink-table/flink-table-planner/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
##########
@@ -1948,9 +1951,23 @@ public CalciteException handleUnresolvedFunction(
if (unresolvedFunction instanceof SqlFunction) {
final SqlOperandTypeChecker typeChecking =
new AssignableOperandTypeChecker(argTypes, argNames);
- signature =
+ final String invocation =
typeChecking.getAllowedSignatures(
unresolvedFunction, unresolvedFunction.getName());
+ if (unresolvedFunction.getOperandTypeChecker() != null) {
+ final String allowedSignatures =
+ unresolvedFunction
+ .getOperandTypeChecker()
+ .getAllowedSignatures(
+ unresolvedFunction,
unresolvedFunction.getName());
+ throw newValidationError(
+ call,
+ EXTRA_RESOURCE.validatorNoFunctionMatch(invocation,
allowedSignatures));
+ } else {
+ signature =
+ typeChecking.getAllowedSignatures(
+ unresolvedFunction,
unresolvedFunction.getName());
+ }
Review Comment:
Created Calcite Ticket - https://issues.apache.org/jira/browse/CALCITE-6069
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