danny0405 commented on a change in pull request #2356:
URL: https://github.com/apache/calcite/pull/2356#discussion_r584559989
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File path: core/src/main/java/org/apache/calcite/rel/type/RelDataTypeImpl.java
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@@ -50,6 +50,12 @@
*/
public abstract class RelDataTypeImpl
implements RelDataType, RelDataTypeFamily {
+
+ /**
+ * Suffix for the digests of non-nullable types.
+ */
+ public static final String NON_NULLABLE_TYPE_DIGEST_SUFFIX = " NOT NULL";
+
Review comment:
Is there any special reason that the variable
`NON_NULLABLE_TYPE_DIGEST_SUFFIX` belongs to this class and can we give it a
shorter name ?
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