org.apache.hadoop.hive.ql.parse.QBSubQueryParseInfo Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hive.ql.parse;
import org.apache.calcite.rel.RelNode;
import static org.apache.hadoop.hive.ql.parse.SubQueryUtils.buildSQOperator;
public class QBSubQueryParseInfo {
public static QBSubQueryParseInfo parse(ASTNode subQueryExprNode) throws SemanticException {
ASTNode subQueryOperatorAST = (ASTNode) subQueryExprNode.getChild(0);
ASTNode subQueryAST = (ASTNode) subQueryExprNode.getChild(1);
ASTNode insertClause = (ASTNode) subQueryAST.getFirstChildWithType(HiveParser.TOK_INSERT);
ASTNode selectClause = (ASTNode) insertClause.getChild(1);
int selectExprStart = 0;
if ( selectClause.getChild(0).getType() == HiveParser.QUERY_HINT ) {
selectExprStart = 1;
}
boolean hasAggregateExprs = false;
for(int i= selectExprStart; i < selectClause.getChildCount(); i++ ) {
ASTNode selectItem = (ASTNode) selectClause.getChild(i);
int r = SubQueryUtils.checkAggOrWindowing(selectItem);
hasAggregateExprs = hasAggregateExprs | ( r == 1 | r== 2 );
}
boolean hasExplicitGby = false;
for(int i=0; i