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v karthik

trigger
1 Answer(s) 7 months ago
Posted in : SQL

whenever an employee is given a raise,the managers salary must be increased to be atleast as much?

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November 9, 2012 at 5:17 PM

Here is a query of creating a trigger.We have created three tables.

Emp(eid,ename,age,salary)
Works(eid,did)
Dept(did,managerid)


create trigger GiveRaise after update on Emp
for each row
begin
update Emp M
set M.salary=new.salary
where M.salary<new.salary
and M.eid in(select d.managerid from Emp e,Works w,Dept d
where e.eid=new.eid
and E.eid=w.eid
and w.did=d.did);
end

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