String Splitting And Concatenation

Aaron Bertrand and Steve Hughes talk about string splitting, and Aaron also discusses string concatenation.  First Aaron:

That may not look like a massive simplification, but don’t forget about all the logic buried behind the table-valued function in the first example. And if you’re like several shops I know, if you look across your codebase and see all the messy uses you have for either of these methods, the benefits should be even more clear – and testing should bear that the performance savings compared to traditional, expensive methods are the sweetest part of the deal.

And Steve:

The STRING_SPLIT function will return a single column result set. The column name is “value”. The datatype will be NVARCHAR for strings that are NCHAR or NVARCHAR. VARCHAR is used for strings that are CHAR or VARCHAR types.

These two functions are small, but come in handy quite frequently.

Related Posts

The Importance of Aliasing in Subqueries

Gail Shaw explains an unexpected result when writing a statement with a subquery: The column name in the temp table is missing an I, probably just a typo, but it has some rather pronounced effects. The obvious next question is why the select with the subquery in it didn’t fail, after all, the query asks […]

Read More

Multi-Pattern Replacement with SQL Server

Hugo Kornelis has a pattern matching problem to solve: The actual use case and the list of patterns that I had to remove are considered a confidential competitive advantage by my client, so I will just make up a list here to illustrate the problem. In this fake requirement, the following patterns must all be […]

Read More

Categories

February 2017
MTWTFSS
« Jan Mar »
 12345
6789101112
13141516171819
20212223242526
2728