DescribeQuery (children 1)
 TableExpression (children 1)
  Subquery (children 1)
   SelectWithUnionQuery (children 1)
    ExpressionList (children 1)
     SelectQuery (children 2)
      ExpressionList (children 2)
       QualifiedAsterisk (children 2)
        Identifier test_table
        ColumnsTransformerList (children 1)
         ColumnsReplaceTransformer (children 1)
          ColumnsReplaceTransformer::Replacement (children 1)
           Function plus (children 1)
            ExpressionList (children 2)
             Identifier id
             Identifier id (alias id_alias)
       Identifier id_alias
      TablesInSelectQuery (children 1)
       TablesInSelectQueryElement (children 1)
        TableExpression (children 1)
         TableIdentifier test_table