tanclary commented on code in PR #3207:
URL: https://github.com/apache/calcite/pull/3207#discussion_r1219934247
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core/src/main/java/org/apache/calcite/sql/type/SqlTypeTransforms.java:
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@@ -96,6 +96,21 @@ public abstract class SqlTypeTransforms {
return typeToTransform;
};
+ /**
+ * Parameter type-inference transform strategy where a derived type is
+ * transformed into the same type, but nullable if and only if the type
+ * of a call's operand #0 (0-based) is nullable.
+ */
+ public static final SqlTypeTransform ARG0_NULLABLE =
+ (opBinding, typeToTransform) -> {
+ RelDataType arg0 = opBinding.collectOperandTypes().get(0);
Review Comment:
similar comment to what i left on your other PR opBinding.getOperandType()
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