The COUNT function is among the most used functions in the T-SQL codes. Even though COUNT is easy to use, it should be used carefully because it could often not return the desired result. For the big tables, the counting of the rows could cause blocking as well as take some more time.
2018-02-09 (first published: 2016-07-12)
10,852 reads
This article shows how to reduce the periodic spikes in the CPU that are caused by the periodic-executing jobs. There is a good reason to make some changes for dismissing them.
2016-12-20
1,568 reads
Indirect checkpoint is the recommended configuration, especially on systems with large memory footprints and default for databases created in SQL Server 2016.
2016-07-21
9,768 reads
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What is returned from this query?
SELECT
( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
WHERE soh.OrderDate > '01/01/2011' AND soh.OrderDate < '01/01/2012') AS OrdersIn2000
, ( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
WHERE soh.OrderDate > '01/01/2012' AND soh.OrderDate < '01/01/2013') AS OrdersIn2001
, ( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
WHERE soh.OrderDate > '01/01/2013' AND soh.OrderDate < '01/01/2014') AS OrdersIn2002; See possible answers