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_r276927000
########## File path: core/src/main/java/org/apache/calcite/plan/RelOptUtil.java ########## @@ -3734,6 +3740,13 @@ private Exists(RelNode r, boolean indicator, boolean outerJoin) { this.outerJoin = outerJoin; } } + + /** Check if it is the join whose condition is based on column equality. */ + public static boolean isEquiJoin(Join join) { + return join.isNonCorrelateSemiJoin() + || join instanceof EnumerableHashJoin + || join instanceof EnumerableMergeJoin; + } Review comment: @hsyuan @rubenada I have rename the method name to forceEquiJoin, cause now some join Enumerable nodes force the join condition must be equi-join, like semi/hash/merge join. So some rule needs this info to prevent some unexpected behavior. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services