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Inline table-valued functions and multi-statement table-valued functions
- This type of function can be very useful when you need to perform complex data transformations or calculations and return the results as a table that can be used in subsequent SQL statements. There are two types of table-valued functions in SQL Server: inline table-valued functions and multi-statement table-valued functions.
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This tutorial introduces you to SQL Server table-valued function including inline table-valued functions and multi-statement table-valued functions.
Here are some key characteristics and considerations for SQL Table-Valued Functions: Types of TVFs. Inline Table-Valued Functions (Inline TVFs): These functions are similar to views and return a table variable directly.
Jan 13, 2016 · A tabled-valued function returns your specified columns for rows in your table meeting your selection criteria. An aggregate-valued function returns a calculation across the rows of a table -- for example summing values.
May 12, 2022 · The main method of the table valued function must return a collection object that implements the IEnumerable or IEnumerator interfaces. If you are new to the concepts of Object-Oriented Programming, this may sound weird to you, but don't worry we will see an example soon.
- Daniel Farina
In SQL Server, a table-valued function (TVF) is a user-defined function that returns a table. This is in contrast to a scalar function, which returns a single value. You can invoke a table-valued function in the same way that you can query a table. For example, you can use it in a SELECT statement.
There are two types of table-valued functions (or TVFs) in SQL: in-line table-valued functions, and the grotesquely named multi-statement table-valued functions. This tutorial considers both!
Aug 29, 2019 · In this article, we explored why we should use functions in SQL Server and then learned the usage scenarios of the inline table-valued functions (iTVF). These types of functions make our database development process easier and modular and also, they help to avoid re-write the same code again.