What are table valued functions in SQL Server?

A table-valued function is a user-defined function that returns data of a table type. The return type of a table-valued function is a table, therefore, you can use the table-valued function just like you would use a table.

How is the information returned from table valued function?

In table-valued function the return type is TABLE. Also, there are no BEGIN and END statements. You simply return a query which retrieves records from the database.

What is inline table valued function in SQL?

The second type of user-defined function, the inline table-valued function, is similar to a view. Both are wrapped for a stored SELECT statement. An inline table-valued user-defined function retains the benefits of a view, and adds parameters.

What is a table valued function?

A table-valued function returns a single rowset (unlike stored procedures, which can return multiple result shapes). Because the return type of a table-valued function is Table , you can use a table-valued function anywhere in SQL that you can use a table.

Can you declare variables in a table valued function?

Table-valued parameters allow sending multiple values to functions. Declare a variable as a table-valued parameter and populate it with multiple parameter values.

Where is inline table valued function used?

The simple definition of the table-valued function (TVF) can be made such like that; a user-defined function that returns a table data type and also it can accept parameters. TVFs can be used after the FROM clause in the SELECT statements so that we can use them just like a table in the queries.

What is the difference between inline table valued function and multi statement?

Inline table valued function refers to a TVF where the function body just contains one line of select statement. There is not return variable. Multi-statement table valued function refers to a TVF where it has a return table variable. Inside the function body, there will be statements populating this table variable.

How do you pass parameters to a table valued function?

How to pass multiple parameters into an Inline table-valued function

1. Creating a user-defined table type: CREATE TYPE ProductNumberList AS TABLE.
2. Adding the table-valued to udfGetProductList function with READONLY statement:
3. Declare a variable as a table-valued parameter and populate it with multiple parameter values.

What is the biggest difference between a scalar and vector variable?

A scalar quantity is different from a vector quantity in terms of direction. Scalars don’t have direction whereas vector has. Due to this feature, the scalar quantity can be said to be represented in one dimensional whereas a vector quantity can be multi-dimensional.