I went with the following: ISNULL( (SUM(foo) / NULLIF(SUM(bar),0) ), 0) AS Avg –Andrew Steitz Mar 1 '13 at 20:45 1 I did not know this solution. And how do you enforce it's use? Let's divide Amount by Quantity. If the user puts zero in the amount, and you want 0 returned when they do that, then you should put in code at the business rules level to catch that useful reference
Viewable by all users 0 You could do the following: SET ARITHABORT OFF SET ANSI_WARNINGS OFF SELECT ISNULL(@Int1 / @Int2, 0) This forces the result to be NULL if a divide You're not really dividing by 0...you're just returning an bad answer to a bad question. Should I serve jury duty when I have no respect for the judge? chris Jun 28, 2010 at 8:19 PM 1 Comments excellent tip! http://www.peachpit.com/blogs/blog.aspx?uk=Avoiding-division-by-zero-with-NULLIF-Five-SQL-Tips-in-Five-Days-Part-5-
He has authored 11 SQL Server database books, 21 Pluralsight courses and have written over 3700 articles on the database technology on his blog at a http://blog.sqlauthority.com. Post this story to del.icio.us Post this story to Digg Post this story to Slashdot Sponsored By SEQUEL SOFTWARE SEQUEL ViewPoint--Data Access & Analysisfor Power Systems Servers Easy to This is more useful where you have multiple divisions with the same denominator.
more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Oct 14, 2010 at 11:42 AM Håkan Winther I generally use this for percentages where zero is required. In this case it might not. Sql Nullif Sponsored Links Help/Systems: Robot/SCHEDULE Enterprise for UNIX, Linux, Windows & i looksoftware: RPG Open Access Webinar - May 18 at 10am (GMT) & May 19 at 2pm (EDT) Essex Technology Group:
How can I have low-level 5e necromancer NPCs controlling many, many undead in this converted adventure? Divide By Zero Error Encountered. The Statement Has Been Terminated Instead any value returned is the computed value and if anything goes wrong an exception is thrown. This is completely wrong in a mathematical sense, and it is even dangerous as your application will likely return wrong and misleading results. So...
See my comment on my answer for a brief explanation and then choose whether you want your original answer or mine. share|improve this answer edited Jan 15 '13 at 19:41 Peter Mortensen 10.2k1369107 answered Jan 4 '12 at 12:06 Tobias Domhan 1,4431011 8 Some benchmarks reveal that COALESCE is slightly slower Msg 8134 Level 16 State 1 Line 1 Divide By Zero Error Encountered If you want a return of 0 (or 1) then you're doing something wrong or asking the wrong question. (Anything / 0) If it's actually 0 then you're doing something wrong Divide By Zero Error Encountered Excel Be sure to look back over my posts this week for more SQL tips.
Is there a word for an atomic unit of flour? see here The beginning inventory is 0. If you have a situation where the ClubTotal is a number and AttTotal is zero, it doesn't make sense to return zero. 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. Oracle Sql Divide By Zero
students who are have girlfriends/are married/who don't come in weekends...? Excellent solution! What am I? this page Speed and Velocity in German Can 'it' be used to refer to a person?
PDF Downloads SQL Coding Standards SQL FAQ DownloadDownload SQL SERVER 2016 (FREE)Exclusive Newsletter SQL Interview Q & ASearch © 2016 All rights reserved. Divide By 0 In 128 Bit Arithmetic Netezza Here is the screenshot of the error.Now there are multiple ways to avoid this error to happen. 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.
Oct 14, 2010 at 12:21 PM Oleg Here is the test script I used to get the numbers in the previous comment. please help.ISNULL(table/NULLIF((table),0),0)*100 Lain Inverse Oct 21, 2012 at 3:29 AM 2 Comments Addendum:In case when divisor could be NULL it's important to NVL it to ZERO. At least Oracle's implementation of NULLIF doesn't accept NULL value as valid parameter and returns error message about it.So, in complete form it looks like:nullif(nvl(divisor,0),0)NVL will change NULL on 0 and Sql Server Divide This helped with a very tough calculation.
If you're dividing by zero, you're trying to do something that doesn't make sense mathematically, so no numeric answer you can get will be valid. (Use of null in this case Therefore, running this code:
And for more on SQL, be sure to check out my book SQL: Visual QuickStart Guide, 3rd Edition. 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 Why did the One Ring betray Isildur? Pretty close considering the number of records.
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. The reason is that SQL Server evaluates the source expression twice when it expands NULLIF into the equivalent CASE expression. Otherwise, the division operation is performed. NULLIF compares two expressions and returns null if they are equal or the first expression otherwise.
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 Scalar Functions are performance destroyers! performance hit from UDF in persisted computed column definition20When are computed columns computed?1Use a scalar hashing function in a computed column - non-deterministic?14Is it legal for SQL Server to fill PERSISTED I have hundreds of friends.
Hurray, no radiation! I received values 0,0,0,0,0, in all fields. share|improve this answer edited Jan 9 '14 at 10:47 KenD 2,21012353 answered Dec 17 '13 at 16:22 frank 29132 1 Yes indeed, that is WAY BETTER than that other answer First, here's the usual case statement.
Just a side note: I would not return 0 when AttTotal is zero and ClubTotal is greater than zero. All content is the property of Ben Nadel and BenNadel.com.