Delete Trigger example in Sybase

1> sp_helptext empage_delete_restrict
2>
# Lines of Text
---------------
1
(1 row affected)
text
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
create trigger empage_delete_restrict on empage
for delete
as
begin
print 'Delete of records not allowed in this table'
rollback transaction
end

(1 row affected)
(return status = 0)
1> select * from empage
2>
empid empage
----------- -----------
654 23
76 45
6 43
100 29
65 60
(5 rows affected)
1> delete from empage where empid = 100
2>
Delete of records not allowed in this table
1> select * from empage
2>
empid empage
----------- -----------
654 23
76 45
6 43
100 29
65 60
(5 rows affected)
1>