kasakrisz commented on a change in pull request #1437:
URL: https://github.com/apache/hive/pull/1437#discussion_r479992802
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/parse/QB.java
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@@ -457,4 +469,17 @@ public boolean hasTableDefined() {
return !(aliases.size() == 1 &&
aliases.get(0).equals(SemanticAnalyzer.DUMMY_TABLE));
}
+ public void addSubqExprAlias(ASTNode expressionTree, SemanticAnalyzer
semanticAnalyzer) throws SemanticException {
+ String alias = "__subexpr" + subQueryExpressionAliasCounter++;
+
+ // Recursively do the first phase of semantic analysis for the subquery
+ QBExpr qbexpr = new QBExpr(alias);
+
+ ASTNode subqref = (ASTNode) expressionTree.getChild(1);
+ semanticAnalyzer.doPhase1QBExpr(subqref, qbexpr, getId(), alias,
isInsideView());
Review comment:
This step parses the subquery only. It is necessary to collect
references to the CTEs in subquery expressions.
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