danny0405 commented on a change in pull request #1157: [CALCITE-2969] Improve 
design of join-like relational expressions
URL: https://github.com/apache/calcite/pull/1157#discussion_r279324687
 
 

 ##########
 File path: 
core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableThetaJoin.java
 ##########
 @@ -45,6 +46,7 @@
 /** Implementation of {@link org.apache.calcite.rel.core.Join} in
  * {@link org.apache.calcite.adapter.enumerable.EnumerableConvention 
enumerable calling convention}
  * that allows conditions that are not just {@code =} (equals). */
+@Deprecated // to be removed before 2.0
 
 Review comment:
   Okey, have made changes:
   
   1. Rename EnumerableThetaJoin to EnumerableNestedLoopJoin
   2. Revert change to EnumerableCorrelate
   
   BTW, sub-query.iq does not have better plan for null correlate now :(

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