Oracle Avoid Divide By Zero Error
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Doug Hughes (@doughughes) Using NULLIF() To Prevent Divide-By-Zero Errors In SQL By Ben Nadel on October 3, 2007 Tags: SQL Boyan Kostadinov just sent me a cool link to an article that is the
Oracle Nullif
final part in a four part series that discusses the SQL NULL value. I divide by zero error encountered. in sql haven't read the first three parts yet, but there is a really cool tip in the fourth part on using NULLIF() divide by zero error encountered excel to prevent divide-by-zero errors in a SQL call.The idea here is that, as with any other form of math that I know of, you cannot divide by zero in a SQL call. Therefore, running this
Vertica Nullif
code:
Divide By Zero Error Encountered In Stored Procedure
same and can be used to turn the divisor from a zero into a NULL which, in turn, will force the entire equation to become NULL. Therefore, running this code: 2007 - 1:28 pm UTC Category: Database � Version: 8.1.7 Whilst you are here, check out some content from the AskTom team: FORALL and ROLLBACKs Latest Followup You Asked Hi Tom, My problem is handling of zero_divide exception. I'm sql divide by using INSERT INTO T1 (SELECT... FROM T2) syntax. Tables T1 and T2 are known only at the runtime. SELECT contains many calculations as per example: SELECT C1/C2,C3+(C4/C5)... FROM T2 I would like to identify rowid of redshift nullif the row raising zero_devide exception. Thank you very much for everything that you done on this site. It is very helpful for me. Best regards. Mladen and we said... select decode( c2, 0, to_number(null), c1/c2 ) https://www.bennadel.com/blog/984-using-nullif-to-prevent-divide-by-zero-errors-in-sql.htm will accomplish your goal safely. Use decode to avoid evaluating a zero divide condition. Note: the to_number is not "extra", it is necessary to avoid implicit conversions to and from strings. Note2: I'm assumging when c2 is zero, the returned value should be "unknown", if it should be zero or some other number, it is OK to return that as well: decode( c2, 0, 0, c1/c2 ) Reviews Write a Review More https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:16179197301219 or less the same problem February 17, 2005 - 9:29 am UTC Reviewer: Gabriel from Portugal My problem is that we have an application where the end user can introduce a formula, wich will eventually turned into a dynamic sql. The idea is to return a null if the expression encounters a zero-divide expression. Our options are - Use a function to wrap around the expression that would catch the zero-divide exception. I don't know how to solve this. - Parse the expressions the user can introduce. This is difficult to do. Do you know a way to implement the first solution ? Something I could use as follows : SELECT myfunc(C1/C2),myfunc(C3+(C4/C5))... FROM T2 Thank you so much for this and for your books, they have been very helpful. Cheers Gabriel Followup February 17, 2005 - 10:37 am UTC parsing the expression would not help unless the function returns a constant value, in which case -- it would not be much of a function! I'm not liking the idea, before I answer how to do in a function, tell me -- how many of these functions are there? why are we not using a view? how often are they executed? Sounds Dangerous ? February 17, 2005 - 11:10 am UTC Reviewer: Paul from London, U SQL TuningSecurityOracle UNIXOracle LinuxMonitoringRemote supportRemote plansRemote servicesApplication Server ApplicationsOracle FormsOracle PortalApp UpgradesSQL ServerOracle ConceptsSoftware SupportRemote Support Development Implementation Consulting StaffConsulting PricesHelp Wanted! Oracle PostersOracle Books Oracle Scripts Ion Excel-DB Don Burleson Blog http://dba-oracle.com/t_ora_01476_divisor_equa_to_zero.htm Oracle Divide By Zero Exception
Server to Oracle Teradata to Oracle Migration to SQL Server IBM DB2 to SQL Server Informix to SQL Server MySQL to SQL Server Sybase ASE to SQL Server Sybase ASA to SQL Server Oracle to SQL Server Migration to PostgreSQL IBM DB2 to PostgreSQL Informix to PostgreSQL Sybase ASE to PostgreSQL Sybase ASA to PostgreSQL Oracle to PostgreSQL SQL Server to PostgreSQL Migration to MySQL Sybase ASE to MySQL Oracle to MySQL SQL Server to MySQL Migration to Netezza Oracle to Netezza Migration to Greenplum IBM DB2 to Greenplum Oracle to Greenplum Migration to EsgynDB Oracle to EsgynDB Teradata to EsgynDB Application Conversion Java C# .NET PowerBuilder COBOL Database Reference Oracle SQL Server IBM DB2 MySQL PostgreSQL Sybase Sybase ASA Informix Teradata Teradata - NULLIFZERO Function - Replace 0 Values with NULL NULLIFZERO function replaces 0 values with NULL, and can be used to avoid division by zero, or to suppress printing zeros in reports i.e. Quick Example: Avoid division by zero: SELECT amount / NULLIFZERO(store_count) FROM sales; NULLIFZERO Overview Summary information: Syntax NULLIFZERO(expression) Alternatives NULLIF(expression, 0) NULLIF and CASE are ANSI SQL compliant CASE expression WHEN 0 THEN NULL ELSE expression END Related Functions: ZEROIFNULL Replace NULL values with 0 Last Update: Teradata 13 Teradata NULLIFZERO in Other Databases Replacing 0 values with NULL in other databases: Oracle: NULLIF(expression, 0) NULLIF and CASE are ANSI SQL compliant CASE expression WHEN 0 THEN NULL ELSE expression END DECODE(expression, 0, NULL, expression) Teradata Resources Reference and Articles Built-in Functions Copyright © 2010 - 2012. All Rights Reserved. Privacy Statement