DescribeQuery (children 1)
 TableExpression (children 1)
  Subquery (children 1)
   SelectWithUnionQuery (children 1)
    ExpressionList (children 1)
     SelectQuery (children 2)
      ExpressionList (children 1)
       ColumnsListMatcher (children 2)
        ExpressionList (children 2)
         Identifier id
         Identifier value
        ColumnsTransformerList (children 2)
         ColumnsExceptTransformer (children 1)
          Identifier id
         ColumnsApplyTransformer
      TablesInSelectQuery (children 1)
       TablesInSelectQueryElement (children 1)
        TableExpression (children 1)
         TableIdentifier test_table
