Showing posts with label est. Show all posts
Showing posts with label est. Show all posts

Sunday, March 11, 2012

Division by zero problem

I've got the following SQL

SELECT count(*) FROM tablea A
JOIN tableb B ON ..etc..
WHERE a.string_val = 'test' AND
b.divider 0 AND
a.number 0 AND
(a.number / b.divider 0)

The b.divider value can be 0, but still I get the division by zero
error message.
I guess the reason is that the database performs the where statements
one at the time?

So when performing the division a.number / b.divider it could get 0 in
the divider even if b.divider 0 is also part of the where
statement??

My question is then.. How can I work around this problem? Changing the
database to set b.divider always 0 is not an optionMaybe this?

SELECT count(*) FROM tablea A
JOIN tableb B ON ..etc..
WHERE a.string_val = 'test' AND
b.divider 0 AND
a.number 0 AND
(a.number / NULLIF(b.divider,0) 0)|||Thank you :)