kasakrisz commented on a change in pull request #1892:
URL: https://github.com/apache/hive/pull/1892#discussion_r569163684
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/parse/type/RexNodeExprFactory.java
##########
@@ -1000,6 +1003,21 @@ protected FunctionInfo getFunctionInfo(String funcName)
throws SemanticException
return functionHelper.getFunctionInfo(funcName);
}
+ @Override
+ protected RexNode replaceFieldNamesInStruct(RexNode expr, List<String>
newFieldNames) {
+ if (newFieldNames.isEmpty()) {
+ return expr;
+ }
+
+ RexCall structCall = (RexCall) expr;
+ List<RexNode> newOperands = structCall.operands.stream()
+ .filter(rexNode -> "_UTF-16LE'tok_alias':VARCHAR(2147483647)
CHARACTER SET \"UTF-16LE\"".compareTo(rexNode.toString()) != 0)
Review comment:
It cannot be skipped because `TypeCheckProcFactory` uses
`SemanticGraphWalker` which requires a return value other than `null` from
`SemanticNodeProcessor.process`.
I introduced a placeholder and filter it out when collecting the children of
a function node.
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