The Sort that Spills to Level 15,000
Paul White shows that SQL Server sometimes produces very misleading information about the impact of sort operations.
2016-10-24
3,412 reads
sort
Never Ignore a Sort Warning in SQL Server
It is always bad news if your SQL queries are having to use the SORT operator. It is worse news if you get a warning that sort operations are spilling onto TempDB. If you have a busy, slow TempDB, then the effect on performance can be awful. You should check your query plans to try to eliminate SORTs and never leave a SORT warning unheeded. Fabiano Amorim shows the range of ways of getting information on what is going on with a query that is doing a SORT and when requests are made for memory.
2015-04-13
8,822 reads
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