private void handleQueryWindowClauses(QB qb, Phase1Ctx ctx_1, ASTNode node)
      throws SemanticException {
    WindowingSpec spec = qb.getWindowingSpec(ctx_1.dest);
    for(Node child : node.getChildren()) {
      processQueryWindowClause(spec, (ASTNode) child);
    }
  }
It will check if this is analyze ... compute statistics noscan
@param tree
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java