Built-In SQL Server Functions

Kevin Feasel

2017-05-26

Syntax

Tywan Terrell has a listing of various functions built into SQL Server:

SQL Server starting with 2012 ship with a robust set of functions that can be used to make code perform faster, with fewer lines of code. The functions  can be used in ETL Process to provide better error handling. A example of this would be the Try_Parse function that allows you to check if a value can be converted.

Another example would be using the FIRST_VALUE() and LAST_VALUE() functions which work against a set of data. These functions are very useful when looking for things like month over month averages and when doing calculations. The table below contain a list of function that are supported starting with 2012 along with some examples of how to use them.

He breaks them down into four categories and provides examples.  Functions can bring their own set of problems with query performance, but most of them can be very useful.

Related Posts

What’s In SQL Server 2019 CTP 2.0?

Aaron Bertrand gives us the highlights: Certificate Management in Config Manager View and validate all of your certificates from a single interface, and manage and deploy certificate changes across all of the replicas in an Availability Group or all of the nodes in a Failover Cluster Instance. Built-in data classification A new ADD SENSITIVITY CLASSIFICATION statement helps you identify and […]

Read More

Multiple Mentions Of A Column In An UPDATE Statement

Doug Lane walks us through various scenarios with updates including the same column multiple times: An application developer came to me with this question recently: “Can I use the same column twice in a SQL UPDATE statement?” Yes and no. It depends on what you mean by “use”. Read on to see what Doug means.

Read More

Categories