What is an inline table function?

Taking the definition of what a user defined function (UDF) is from Books Online, an inline table-valued function (iTVF) is a table expression that can accept parameters, perform an action and provide as its return value, a table.

What do inline table valued functions return?

In our previous article, we learned that a scalar user-defined function returns a single (scalar) value. On the other hand, an Inline Table-Valued function returns a table.

How do I run a SQL table-valued function?

SQL Server Table-valued Functions

  1. CREATE FUNCTION udfProductInYear ( @model_year INT ) RETURNS TABLE AS RETURN SELECT product_name, model_year, list_price FROM production.products WHERE model_year = @model_year;
  2. SELECT * FROM udfProductInYear(2017);
  3. SELECT product_name, list_price FROM udfProductInYear(2018);

How do you write an inline query in SQL?

Comments (1)

  1. If it present in the SELECT list, it is called “sub-select”.
  2. If it present in the FROM clause, it is called “inline-query” or “inline-view”.
  3. If it present in the WHERE clause, it may be a simple sub-query or “co-related sub-query”.

What is 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.

Why do we use table-valued function in SQL?

A multi-statement table-valued function or MSTVF is a table-valued function that returns the result of multiple statements. The multi-statement-table-valued function is very useful because you can execute multiple queries within the function and aggregate results into the returned table.

What is inline SQL query?

An inline query is a type of sub-query present in FROM clause of a SQL as a data source. Below is the type of sub-query: If it present in the SELECT list, it is called “sub-select”. If it present in the FROM clause, it is called “inline-query” or “inline-view”.

What is the difference between scalar valued function and table valued function?

A scalar function returns a single value. It might not even be related to tables in your database. A tabled-valued function returns your specified columns for rows in your table meeting your selection criteria.

How many different types of table valued Udfs are there?

three types
There are three types of UDF in Microsoft SQL Server 2000: scalar functions, inline table-valued functions, and multistatement table-valued functions. Scalar functions return a single data value (not a table) with RETURNS clause.

How do you find the table-valued function?