SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier v
    Function variantElement (children 1)
     ExpressionList (children 2)
      Identifier v
      Literal \'Map(String, UInt64)\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function format (children 1)
       ExpressionList (children 3)
        Identifier CSV
        Literal \'v Variant(String, Map(String, UInt64))\'
        Literal \'\\\\N\\n"string"\\n"{\\\'a\\\' : 42, \\\'b\\\' : 43, \\\'c\\\' : null}"\\n"{\\\'c\\\' : 44, \\\'d\\\' : [1,2,3]}"\\n"{\\\'c\\\' : 44"\'
 Identifier CSV
