Paul White explains a few different ways to retrieve distinct values from a table, including some big "it just runs faster" wins in SQL Server 2019.
Category: T-SQL
Continuing his treatment of NULLs in SQL Server, Itzik Ben-Gan covers how SQL Server's implementation of unique constraints differs from the standard, and how you can work around it.
John Welch shares a script for checking MAXDOP, a SQL Server setting that controls how many processors may be used for parallel plan execution.
Itzik Ben-Gan discusses missing T-SQL features like the DISTINCT FROM predicate, the NULL treatment clause, and controlling how NULLs are ordered.
Melissa Connors shares her perspective on Imposter Syndrome for T-SQL Tuesday #122.
Itzik Ben-Gan continues his mind-bending series on NULL complexities in T-SQL, treating a variety of constructs, including the MERGE statement.
Itzik Ben-Gan kicks off a new series of Transact-SQL blog posts treating NULL handling in SQL Server.
Jason Hall shares how the CHOOSE function in T-SQL is a game changer. Learn more to see if T-SQL CHOOSE() might help you with your own projects.
Itzik Ben-Gan discusses lesser-known T-SQL features and some aspects that many of us make assumptions about.
Itzik Ben-Gan adds another post to his series on T-SQL pitfalls and best practices series, treating complications and limitations of the PIVOT and UNPIVOT operators.
Itzik Ben-Gan continues a pitfall and best practices series with a post explaining how window functions can go wrong in SQL Server.
Itzik Ben-Gan resumes his blog series on T-SQL bugs, pitfalls, and best practices, treating an issue with correlated column references in subqueries.
Aaron Bertrand shares his slide decks and demos from two recent presentations at CodeStock in Knoxville, TN.
Itzik Ben-Gan asks you to invest in SQL Server's future by voting for Row Pattern Recognition, a potential T-SQL syntax extension he deems the next step in the evolution of window functions.
Paul White explains why the IGNORE_DUP_KEY index option on a clustered index can result in much poorer performance than for a nonclustered unique index.
