InsertQuery   (children 3)
 Function file (children 1)
  ExpressionList (children 3)
   Function concat (children 1)
    ExpressionList (children 2)
     Function currentDatabase (children 1)
      ExpressionList
     Literal \'_test_02244\'
   Literal \'CSV\'
   Literal \'x String, y UInt32\'
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Literal \'Hello, world!\'
     Literal UInt64_42
    Set
 Set
