danny0405 commented on a change in pull request #1374: [CALCITE-3138]
Restructuring ROW type fields is not supported
URL: https://github.com/apache/calcite/pull/1374#discussion_r314170313
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File path: core/src/main/java/org/apache/calcite/sql/fun/SqlItemOperator.java
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@@ -125,6 +128,14 @@ private SqlSingleOperandTypeChecker
getChecker(SqlCallBinding callBinding) {
case MAP:
return typeFactory.createTypeWithNullability(operandType.getValueType(),
true);
+ case ROW:
+ int lastOperandIdx = opBinding.getOperandCount() - 1;
+ String fieldName = opBinding.getOperandLiteralValue(lastOperandIdx,
String.class);
+ return operandType.getFieldList().stream()
+ .filter(field -> field.getName().equalsIgnoreCase(fieldName))
+ .findFirst().map(RelDataTypeField::getType)
Review comment:
You can get the `NameMatcher` from `CatalogReader` of `SqlValidator` to
decide the case sensitivity.
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