AlterQuery  test (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_PROJECTION (children 1)
   Projection (children 1)
    ProjectionSelectQuery (children 2)
     ExpressionList (children 1)
      Asterisk
     Function substring (children 1)
      ExpressionList (children 3)
       Identifier ns
       Literal UInt64_1
       Literal UInt64_5
 Identifier test
