What are the functions in SQL?

What are SQL functions and types?

SQL function There are two types of SQL functions, aggregate functions, and scalar(non-aggregate) functions. Aggregate functions operate on many records and produce a summary, works with GROUP BY whereas non-aggregate functions operate on each record independently.

How many types of functions are there in SQL?

There are three types of user-defined functions in SQL Server: Scalar Functions (Returns A Single Value) Inline Table Valued Functions (Contains a single TSQL statement and returns a Table Set) Multi-Statement Table Valued Functions (Contains multiple TSQL statements and returns Table Set)

What is a function in SQL with example?

Functions can be used anywhere in SQL, like AVG, COUNT, SUM, MIN, DATE and so on with select statements. Functions compile every time. Functions must return a value or result. Functions only work with input parameters. Try and catch statements are not used in functions.

What are functions in SQL Server?

FunctionDescriptionCOALESCEReturns the first non-null value in a listCONVERTConverts a value (of any type) into a specified datatypeCURRENT_USERReturns the name of the current user in the SQL Server databaseIIFReturns a value if a condition is TRUE, or another value if a condition is FALSE