AlterQuery  t_update_materialized (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier id
     Literal UInt64_1
   ExpressionList (children 1)
    Assignment c1 (children 1)
     Literal UInt64_2
 Identifier t_update_materialized
