scarlin-cloudera commented on code in PR #4442:
URL: https://github.com/apache/hive/pull/4442#discussion_r1306577624
##########
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/translator/ASTConverter.java:
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@@ -621,6 +644,109 @@ private ASTNode pkFkHint(int fkTableIndex, boolean
nonFkSideIsFiltered) {
}
}
+ private ASTNode createASTLateralView(TableFunctionScan tfs, Schema s,
+ QueryBlockInfo tableFunctionSource, String sqAlias) {
+ // In the case where the RelNode is a HiveTableFunctionScan, first we check
+ // to see if we can't optimize out the lateral view operator. We can
optimize the
+ // operator out if only the udtf fields are grabbed out of the RelNode.
If any
+ // of the base table fields need to be grabbed out, then a 'join' needs to
be done
+ // and we need the lateral view.
+ //
Review Comment:
Code has been changed so canOptimizeLateralView is not needed anymore
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