If you use this technique, be sure to put the zero in the second argument of NULLIF. I have a online form. You can read various comments posted in the blog post and they are indeed very enlightening. Usually I need to return 0 when there is a divide by zero error. weblink
Rewrite the query as: SELECT club_id, males, females, males/NULLIF(females, 0) AS ratio FROM school_clubs; Any number divided by NULL gives NULL, and no error is generated. This is completely wrong in a mathematical sense, and it is even dangerous as your application will likely return wrong and misleading results. I recommend you read this article: http://www.sqlmag.com/Articles/ArticleID/9148/pg/2/2.html share|improve this answer answered May 14 '09 at 15:49 Remus Rusanu 206k25267405 3 There is such a "Magic global setting";SET ARITHABORT OFF. –David View All Jobs | Post A Job - Only $29 » ColdFusion Engineer - Enterprise Applications at Market America MEAN Stack Developer at EDU Healthcare Software Development Engineer - REQ20003869 at
Solution / Work Around: There are three ways to avoid the "Division by zero encountered" error in your SELECT statement and these are as follows: CASE statement NULLIF/ISNULL functions SET ARITHABORT Guild Companies, Inc., 50 Park Terrace East, Suite 8F, New York, NY 10034 Privacy Statement current community blog chat Database Administrators Database Administrators Meta your communities Sign up or log in For any SQL Server Performance Tuning Issue send email at pinal @ sqlauthority.com . sql sql-server sql-server-2005 sql-server-2008 share|improve this question edited Jan 6 at 19:50 Hooper 4241525 asked May 14 '09 at 6:06 Henrik Staun Poulsen 4,89331220 4 Perhaps some data validation is
Msg 8134, Level 16, State 1, Line 2 To avoid this I am using a CASE as: DECLARE @Int1 AS INT , @Int2 AS INT SET @Int1 = 6 SET @Int2 Aakansha May 2, 2010 at 1:36 AM 1 Comments Hi,Excellent find!Using this I soved my problem. Oct 14, 2010 at 11:42 AM Håkan Winther I generally use this for percentages where zero is required. Sql Nullif Function Hence the error.If we just cast the denominator to decimal,error is gone.
If yes, then how?Thanks in advance!Regards,Aakansha Ben Nadel May 3, 2010 at 9:08 AM 12,873 Comments @Aakansha, Yeah, the nullif() is really just a short hand for the CASE statement. total" in case AttTotal is zero: PercentageString := CASE WHEN AttTotal = 0 AND ClubTotal = 0 then '100%' WHEN AttTotal = 0 AND ClubTotal <> 0 THEN 'No att. The biggest problem is that you cannot distinguish between a correctly computed 0 being returned or a 0 as the result of an error. http://stackoverflow.com/questions/19631017/simple-way-to-prevent-a-divide-by-zero-error-in-sql Physically locating the server Humans as batteries; how useful would they be?
I do believe though that in this situation the case is going to be only very-very-slightly faster. Sql Iszero Thank you very much. –Henrik Staun Poulsen Dec 17 '13 at 20:01 It works on complex queries! What's an easy way of making my luggage unique, so that it's easy to spot on the luggage carousel? Replace the variable @Int2 from the original question with a subquery (just a call to RAND for compactness): SELECT1 / ISNULL(NULLIF((SELECT FLOOR(RAND() * 2)),0),1); That will frequently give a divide by
In C# any errors that occur in SQL will throw an exception that I can catch and then handle in my code, just like any other error. Scalar Functions are performance destroyers! Divide By Zero Error In Sql Server Why are Exp and 2 treated differently within Complex? Msg 8134 Level 16 State 1 Line 1 Divide By Zero Error Encountered So it would be: Percentage = ISNULL(100 * ClubTotal / NULLIF(AttTotal, 0), 0) The inner part is evaluated to NULL and then ISNULL replaces it with 0.
Hot Network Questions How much should the average mathematician know about foundations? have a peek at these guys I dont want to lose rows where it is zero so, I cant accept a NULL in its place or to filter out those rows with a WHERE @int20 I simply Here is the smallest query i could get, if i remove any of the components it starts working, it is enough to remove order by and it works. But this,time, let's provide a default value if the division isnot valid.--->
It's an indication that something is fundementally wrong. Senior Technical Editor: Ted Holt Technical Editor: Joe Hertvik Contributing Technical Editors: Erwin Earley, Brian Kelly, Michael Sansoterra Publisher and Advertising Director: Jenny Thomas Advertising Sales Representative: Kim Reed Contact the If you would like see SQL perform this math you can write "select 10000/(17.00/17.00/17.00) AS Result2" then we will get result in decimal or float however even this won't be completely check over here Can someone please explain the way this ability cost is written?
Hit me up on Twitter if you want to discuss it further. How To Fix Divide By Zero Error In Sql Server How to cope with too slow Wi-Fi at hotel? Why doesn't Rey sell BB8?
Using the NULLIF and ISNULL functions, your query will look like the following: SELECT ISNULL([Numerator] / NULLIF([Denominator], 0), 0) AS [Percentage] FROM [Table1] What this does is change the denominator into Viewable by all users 4 answers: sort voted first ▼ oldest newest voted first 0 You can use NULLIF if you want to return null when division by zero: SELECT @int1 Needed it in a query that does aggregation and use CASE statement was not an option because then I had to add that column to the GROUP BY which totally changed Tsql Divide By Zero Error Encountered If Quantity is zero, the calculation yields a zero.
I would accept this one. –Christiaan Westerbeek Jan 6 at 19:41 add a comment| up vote -2 down vote case when Denominator=0 then 0 else Numerator/ Denominator end as [Result] share|improve Its a possibility. +1 Oct 14, 2010 at 11:04 AM Fatherjack ♦♦ Sorry I didn't read the bit where you wanted it to be 1. Back to Top About Ben Nadel I am the co-founder and lead engineer at InVision App, Inc — the world's leading prototyping, collaboration & workflow platform. http://darrenmanning.com/divide-by/divide-by-zero-error-in-ms-sql.html Browse other questions tagged sql-server sql-server-2008-r2 computed-column or ask your own question.
I want division to throw the error because it's the flag that something is wrong. At least please remove the coalesce, then the division returns NULL instead of Zero, that's better. –George Nov 26 '15 at 17:38 4 @SQLGeorge While I agree with your argument, share|improve this answer edited Dec 12 '11 at 11:54 mrnx 17.8k52642 answered Jun 30 '11 at 11:29 Taz 28132 Works for me. Typically what I've seen is a sproc being used for client applications, rather than plain SQL. –Zymus Jan 7 at 7:11 add a comment| 3 Answers 3 active oldest votes up
I have calculated that I have Cost of Goods sold during the three month period of $1,000. Even if you write your query differently using ISNULL or NULLIF at the end it will likely execute the same. –Nenad Zivkovic Oct 28 '13 at 9:34 As has Oh my chickens, this post is old! PDF Downloads SQL Coding Standards SQL FAQ DownloadDownload SQL SERVER 2016 (FREE)Exclusive Newsletter SQL Interview Q & ASearch © 2016 All rights reserved.
todd sharp Oct 3, 2007 at 10:45 PM 48 Comments Excellent find! Note that it is always better to add a small explanation of whatever you are suggesting - even if it seems very simple ;) –Trinimon Sep 16 '15 at 16:42 add Am I missing some super useful function that does this in one line? OK, thanks for the answers so far. Oct 14, 2010 at 09:31 AM Mark That's a good point Hakan, but - at least for me - by the time I'm doing division on rows like this, I've narrowed
I am finding values 0,0,0,0 in all fields.for example.I have 6 fields created in my form.1 NAME 2.CITY NAME 3.E-mail id 4.Contact No 5.Pass and 6.Comments Area in my form. I just want to handle the /0 error elegantly Oct 14, 2010 at 11:05 AM Fatherjack ♦♦ @Fatherjack I added a small test comment below Håkan's answer (10 million records table, I used to use CASE statements in the divisor. Contradiction between law of conservation of energy and law of conservation of momentum?
How to download database tables for editing and synchronize back Let's do the Wave! The actuall NULLIF function definition is simply a case statement under the hood, but it has this nice compact form :) nullif (@a, @b) means case when @a = @b then For the CLI wallet, how can I teach myself all that it can do? In this case it might not.
Nupur Dave is a social media enthusiast and and an independent consultant. Starting hit points for Arcane Ward How could MACUSA exist in 1693 or be in Washington in 1777? select itnbr, Amount, Quantity, case when Quantity <> 0 then Amount / Quantity else 0 end from SomeTable If Quantity is not zero, the division takes place. share|improve this answer answered Jan 6 at 12:45 Lennart 5,5562624 Of course this is the cleanest solution.