SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 3)
    Identifier id
    Function tuple (alias a) (children 1)
     ExpressionList (children 2)
      Function replaceAll (alias col_a) (children 1)
       ExpressionList (children 3)
        Identifier data
        Literal \'a\'
        Literal \'e\'
      Identifier type
    Function tuple (alias b) (children 1)
     ExpressionList (children 2)
      Function replaceAll (alias col_b) (children 1)
       ExpressionList (children 3)
        Identifier data
        Literal \'a\'
        Literal \'e\'
      Identifier type
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier src
