AlterQuery  test (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Literal UInt64_1
   ExpressionList (children 1)
    Assignment d (children 1)
     Function concat (children 1)
      ExpressionList (children 2)
       Identifier d
       Function toString (children 1)
        ExpressionList (children 1)
         Function sleepEachRow (children 1)
          ExpressionList (children 1)
           Literal Float64_0.1
 Identifier test
