Division by zero and computed by column

I've got two integer columns in the table, third one is computed by previous two ones division. That's fine, however sometimes can happen that divided by column is set to zero. How can i avoid division by zero exception, please? TIA

The best way to avoid the problem is to use a CASE statement like:

declare @.aTable table(value1 int, value2 int)
insert into @.aTable values (32, 4)
insert into @.aTable values (5, 0)

select value1,
value2,
case when value2 <> 0 then value1/value2 end
from @.aTable

/*
value1 value2
-- -- --
32 4 8
5 0 NULL
*/

-- Or maybe:

select value1,
value2,
isnull(convert(varchar(11), case when value2 <> 0 then value1/value2 end), '')
from @.aTable

/*
value1 value2
-- -- --
32 4 8
5 0
*/

|||

Thank you for your reply.

So you prefer to get the result via select command instead of fixed computed by column, right?

|||I am not sure that I understand that last question; what exactly do you mean?|||

You can use the CASE structure in a computed column definition:

Something like:

Code Snippet

ALTER TABLE MyTable

ADD COLUMN MyComputedCol AS ( CASE WHEN ( [Col1] <> 0 ) THEN ( [Col2] / [Col1] ) END )

|||Thanks for picking me up, Arnie! Again, I am asleep at the wheel! Sheesh! To answer your question, Jan, no, I have no issue against using the computed column. As Anie indicated, the computed column should be just fine. (I'm BRAINDEAD today!)|||Wow, that's amazing. Thank you Kent and Arnie!