/*
ALTER TABLE f1 ALTER COLUMN kodli INT NULL
update F1 set F1.kodli = (select top 1 per.nkodli from per where per.kodli = F1.kodli)
go
ALTER TABLE f16 ALTER COLUMN kodli INT NULL
update F16 set F16.kodli = (select top 1 per.nkodli from per where per.kodli = F16.kodli)
go
ALTER TABLE f16d ALTER COLUMN kodli INT NULL
update F16D set F16D.kodli = (select top 1 per.nkodli from per where per.kodli = F16D.kodli)
go
ALTER TABLE f17 ALTER COLUMN kodli INT NULL
update F17 set F17.kodli = (select top 1 per.nkodli from per where per.kodli = F17.kodli)
*/

Нажимаю Parse Query (ctrl+F5) получаю:

Server: Msg 113, Level 15, State 1, Line 4
Missing end comment mark '*/'.
Server: Msg 170, Level 15, State 1, Line 3
Line 3: Incorrect syntax near '/'.

/*ALTER TABLE f1 ALTER COLUMN kodli INT NULL
update F1 set F1.kodli = (select top 1 per.nkodli from per where per.kodli = F1.kodli)
*/
go

/*
ALTER TABLE f16 ALTER COLUMN kodli INT NULL
update F16 set F16.kodli = (select top 1 per.nkodli from per where per.kodli = F16.kodli)
*/
go
/*
ALTER TABLE f16d ALTER COLUMN kodli INT NULL
update F16D set F16D.kodli = (select top 1 per.nkodli from per where per.kodli = F16D.kodli)
*/
go
/*
ALTER TABLE f17 ALTER COLUMN kodli INT NULL
update F17 set F17.kodli = (select top 1 per.nkodli from per where per.kodli = F17.kodli)
*/
Пожалуй, так работает.
Обидно, когда в скрипте куча строк каждую помечать как --...
уж лучше вырезать часть запроса, или работать без GO