Category: SQL Server

Paul Randal provides a detailed introduction to troubleshooting SQL Server workload performance using wait statistics.
Paul White explains in detail the factors SQL Server considers when enabling minimal logging for inserts into a table without a clustered index.
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Paul White goes deep on grouped aggregation pushdown, and explains examples where this optimization is unsuccessful or simply not attempted, using the undocumented command DBCC CSINDEX.
April 23, 2019 | SQLPerformance.com | SQL Server, ColumnStore 0
Aaron Bertrand shares his slide decks and demos from two recent presentations at CodeStock in Knoxville, TN.
April 13, 2019 | Aaron Bertrand | T-SQL, CodeStock, SQL Server 0
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.
April 10, 2019 | SQLPerformance.com | T-SQL, SQL Server 0
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.
Rob Farley talks about filtered indexes and when you might want to add filtered columns to the index definition.

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