WHAT IS function and types of functions in SQL Server?

Question

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) 7 июл. 2017 г.

What are SQL function types?

FunctionDescriptionSUM()Used to return the sum of a group of values.COUNT()Returns the number of rows either based on a condition, or without a condition.AVG()Used to calculate the average value of a numeric column.MIN()This function returns the minimum value of a column.

What are SQL functions in SQL Server?

SQL server functions are sets of SQL statements that execute a specific task. Their main use is in allowing common tasks to be easily replicated. The use of SQL server functions is similar to that of functions in mathematics, in that they correlate a series on inputs to a series of outputs.

What are the types of user-defined functions in SQL Server?

There are two main types of user-defined functions in SQL based on the data they return: Scalar functions: These types of functions return a single value, i.e float, int, varchar, datetime, etc. Table-Valued functions: These functions return tables.

What is a function in database?

Database functions are specialized database procedures that contain any number of input parameters but only one output parameter. The output parameter represents the result of the database function.

Expert · Answer