PostgreSQL provides several functions to deal with the NULL values, such as COALESCE() function,NULLIF()function, etc. TheNULLIFis one of the most frequently used conditional expressions that deal with the null values. This post will elaborate on the below-listed concepts of the NULLIF() functio...
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In this post, we are going to understand what the COALESCE function is and how to use it in PostgreSQL. What is a COALESCE Function? COALESCE is a system in-built function that can be considered one of the conditional expressions available in PostgreSQL. NULLIF, GREATEST, LEAST, and COALESCE...
Solution 1: Use NULLIF function Discussion Solution 2: Use WHERE Problem You want to perform division in your SQL query, but the denominator is an expression that can be zero. The database will give you an error when the denominator is in fact zero. Example Our database has a table...
Consider the SQL statement below to show the error occurs: SELECT 1/0; As you can see that the query produces an error. We need to use the NULLIF() function to remove this division by zero error. The updated query is as follows: ...
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Method 1: SQL NULLIF Function Initially, we use NULLIF function to avoid divide by zero error message. The syntax of NULLIF function: NULLIF(expression1, expression2) It accepts two arguments. Firstly, If both the arguments are equal, it returns a null value ...
WHERE LastName IN ( SELECT value FROM string_split(@Persons,',') ); If you are working on a newer version of SQL Server, using the list of values with STRING_SPLIT function is optimal. It is optimized and easy to use, without the potential third-to-find bugs of some custom solutions...
Because the ANSI_NULLS option has been deprecated, you should not use it and you should update any code that does, assuming you have the access and time. If you don’t, you could be in store for bigger problems.Imagine an application that connects to two differen...
The solution Edward Boyle posted is the one I use. If you need a non-null final result, simply add an encompassing COALESCE or ISNULL to provide the appropriate 'default' value. ISNULL(col1 / NULLIF(col2, 0), 0) will provide a final result of zero. ...