Question

Here, I have some student Information In table. Whose authorized value is by default 0.
After checking some condition i group some students and update there value to 1.

Only those students who meets the given condition i.e.

select * from studentA 
where schName ='IES DADAR' and lang = 'E' 

[1]: http://rk.somee.com/untitled.jpg

I am trying with the following code but its not filtering as per my given condition, instead it changes every students authorization value to 1.

update studentA
set Authorized = '1'
where Authorized IN 
( select Authorized from studentA 
where schName ='IES DADAR' and lang = 'E')

You can suggest me another method as well.

Answer 1

try

update studentA 
set Authorized = '1' 
where schName ='IES DADAR' 
and lang = 'E'