How To Delete A Function In Sql

Conditionally drops the function only if it already exists. Available beginning with SQL Server 2016 and in SQL Database. schema_name Is the name of the schema to which the user-defined function belongs. function_name Is the name of the user-defined function or functions to be removed. Specifying the schema name is optional.

Once you have created your function in SQL Server Transact-SQL, you might find that you need to remove it from the database. Syntax . The syntax to a drop a function in SQL Server Transact-SQL is DROP FUNCTION function_name function_name The name of the function that you wish to drop. Example

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Most functions can be dropped using SQL statements similar to the following DROP FUNCTION best_month If you have more than one function with the same name, however, by using function overloading, the DROP FUNCTION statement must either specify the specific name of the function if it has one, or the parameter list to uniquely identify it.

The SQL DROP FUNCTION statement is a command in SQL Structured Query Language that's used to delete an existing function from a database. Functions are named blocks of code, stored in a database, that can perform actions and return the result. The DROP FUNCTION statement removes these functions permanently, freeing up system resources.

IF object_idN'function_name', N'FN' IS NOT NULL DROP FUNCTION function_name GO The main thing to catch is what type of function you are trying to delete denoted in the top sql by FN, IF and TF FN Scalar Function IF Inlined Table Function TF Table Function

Here is the syntax of the DROP FUNCTION statement DROP FUNCTION IF EXISTS function_name Code language SQL Structured Query Language sql In this syntax, you specify the name of the stored function that you want to drop after the DROP FUNCTION keywords. The IF EXISTS option allows you to conditionally drop a stored function if it exists

To go further and delete all use defined functions at once, simply include this DROP Function script inside a stored procedure with a loop. The loop need to take the name of all use defined functions in a variable and execute the drop statement. We've seen multiple ways to delete a SQL Server function with a T-SQL script.

Introduction to SQL Server DROP FUNCTION statement. To remove an existing user-defined function created by the CREATE FUNCTION statement, you use the DROP FUNCTION statement as follows DROP FUNCTION IF EXISTS schema_name. function_name Code language SQL Structured Query Language sql In this syntax IF EXISTS. The IF EXISTS option

The DROP FUNCTION statement is used in SQL databases to delete a user-defined function. This action removes the function from the database, and once it is dropped, it cannot be used until it is recreated. Here's the general syntax for the DROP FUNCTION statement