vlsi commented on a change in pull request #2356:
URL: https://github.com/apache/calcite/pull/2356#discussion_r583553701
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File path: core/src/main/java/org/apache/calcite/rel/type/RelDataType.java
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@@ -40,6 +40,11 @@
int SCALE_NOT_SPECIFIED = Integer.MIN_VALUE;
int PRECISION_NOT_SPECIFIED = -1;
+ /**
+ * Suffix for the digests of non-nullable types.
+ */
+ String NON_NULLABLE_TYPE_DIGEST_SUFFIX = " NOT NULL";
Review comment:
Frankly speaking, I do not like how this leaks to the public API.
Could you declare the constant in a Calcite-private location to prevent it
accidental use in the client code?
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