SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 2)
    Identifier v
    Function variantElement (children 1)
     ExpressionList (children 2)
      Identifier v
      Literal \'Array(LowCardinality(Nullable(String)))\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function format (children 1)
       ExpressionList (children 3)
        Identifier CSV
        Literal \'v Variant(Array(LowCardinality(Nullable(String))), UInt64, String)\'
        Literal \'\\\\N\\n"[\\\'string\\\', null]"\\n"[\\\'string\\\', nul]"\\n42\'
 Identifier CSV
