xy2953396112 commented on a change in pull request #2135:
URL: https://github.com/apache/calcite/pull/2135#discussion_r483007134
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File path: core/src/main/java/org/apache/calcite/rel/type/RelDataTypeImpl.java
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@@ -217,6 +217,12 @@ public int getScale() {
return SCALE_NOT_SPECIFIED;
}
+ /**
+ * Gets the {@link SqlTypeName} of this type.
+ * Sub-classes must override the method to ensure the resulting value is
non-nullable.
+ *
+ * @return SqlTypeName, never null
+ */
public SqlTypeName getSqlTypeName() {
return null;
Review comment:
Why is this null? How about `SqlTypeName.ANY` ?
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