SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function arrayMap (children 1)
     ExpressionList (children 2)
      Function lambda (alias lambda) (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function concat (children 1)
         ExpressionList (children 1)
          Function concat (children 1)
           ExpressionList (children 2)
            Function concat (children 1)
             ExpressionList (children 4)
              Function concat (children 1)
               ExpressionList (children 4)
                Function concat (children 1)
                 ExpressionList (children 2)
                  Function toString (children 1)
                   ExpressionList (children 1)
                    Identifier id
                  Literal \'___\\0_______\\0____\'
                Function toString (children 1)
                 ExpressionList (children 1)
                  Identifier id
                Function concat (children 1)
                 ExpressionList (children 2)
                  Function concat (children 1)
                   ExpressionList (children 2)
                    Function toString (children 1)
                     ExpressionList (children 1)
                      Identifier id
                    Literal \'\'
                  Function toString (children 1)
                   ExpressionList (children 1)
                    Identifier id
                Function toString (children 1)
                 ExpressionList (children 1)
                  Identifier id
              Function arrayMap (children 1)
               ExpressionList (children 2)
                Function lambda (alias lambda) (children 1)
                 ExpressionList (children 2)
                  Function tuple (children 1)
                   ExpressionList (children 1)
                    Identifier x
                  Function concat (children 1)
                   ExpressionList (children 2)
                    Function concat (children 1)
                     ExpressionList (children 3)
                      Function concat (children 1)
                       ExpressionList (children 2)
                        Function concat (children 1)
                         ExpressionList (children 2)
                          Function toString (children 1)
                           ExpressionList (children 1)
                            Identifier id
                          Literal \'\'
                        Function toString (children 1)
                         ExpressionList (children 1)
                          Identifier id
                      Function toString (children 1)
                       ExpressionList (children 1)
                        Identifier id
                      Literal \'___\\0_______\\0____\'
                    Function toString (children 1)
                     ExpressionList (children 1)
                      Identifier id
                Literal Array_[NULL, Float64_inf, UInt64_1, UInt64_1]
              Function concat (children 1)
               ExpressionList (children 2)
                Function toString (children 1)
                 ExpressionList (children 1)
                  Identifier id
                Literal NULL
              Function toString (children 1)
               ExpressionList (children 1)
                Identifier id
            Function toString (children 1)
             ExpressionList (children 1)
              Identifier id
      Literal Array_[NULL, NULL, UInt64_2147483647]
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table
   Function concat (children 1)
    ExpressionList (children 3)
     Function concat (children 1)
      ExpressionList (children 2)
       Function concat (children 1)
        ExpressionList (children 2)
         Function toString (children 1)
          ExpressionList (children 1)
           Identifier id
         Literal \'___\\0_______\\0____\'
       Function toString (children 1)
        ExpressionList (children 1)
         Identifier id
     Function concat (children 1)
      ExpressionList (children 2)
       Function toString (children 1)
        ExpressionList (children 1)
         Identifier id
       Literal NULL
     Function toString (children 1)
      ExpressionList (children 1)
       Identifier id