SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 4)
    Identifier f.c1
    Identifier f.c2
    Identifier f.c3
    Identifier f.c4
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function format (alias f) (children 1)
       ExpressionList (children 2)
        Literal \'CSV\'
        Literal \'1,2,"[1,2,3]","[[\\\'abc\\\'], [], [\\\'d\\\', \\\'e\\\']]"\'