HyukjinKwon commented on a change in pull request #31475:
URL: https://github.com/apache/spark/pull/31475#discussion_r578039193



##########
File path: 
sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/SupportsDelete.java
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@@ -68,4 +69,15 @@ default boolean canDeleteWhere(Filter[] filters) {
    * @throws IllegalArgumentException If the delete is rejected due to 
required effort
    */
   void deleteWhere(Filter[] filters);
+
+  Filter[] ALWAYS_TRUE_FILTER = new Filter[] { new AlwaysTrue() };

Review comment:
       Can't people use `AlwaysTrue` directly if they want? I would also prefer 
to avoid having multiple ways to do the same thing. It looks odd to have the 
AlwaysTrue predicate constant as an API under `SupportsDelete` interface.




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