What is Function in Sql Server

Question

Hi All, What is Function in Sql Server and how to use with examples.

Jaish Mathews · Answer

If you need a computed value from your tables, User Defined Function can use. For example Sum of certain column values, average of certain values etc... Functions have Only READ-ONLY database access. So no modification to database objects possible. If DML operations would be allowed in functions, then functions would be pretty similar to stored procedures. The way it is, a stored procedure can use a function, but not vice versa. Therefore, functions increase the “power” of stored procedures, queries and T-SQL scripts There are many built-in functions available, which you can use in your queries. Ref. here for buit-in functions, https://www.w3schools.com/sql/sql_ref_sqlserver.asp

Priyanka Singh · Answer

Hey, visit this link and you will clearly understand https://www.janbasktraining.com/blog/different-types-sql-server-sql-database-functions/

Mohsin Arif · Answer

hey also follow this links http://www.sqlservertutorial.net/sql-server-user-defined-functions/sql-server-scalar-functions/ https://www.c-sharpcorner.com/UploadFile/b926a6/function-operation-in-sql-database/

Kaushik Dudhat · Answer

A function is a database object in SQL Server. Basically, it is a set of SQL statements that accept only input parameters, perform actions and return the result. A function can return an only single value or a table. Types of SQL Server Functions: System Defined Functions And in the system-defined function, we have 2 types of functions. System Scalar Function System Aggregate Function