In general XML documents or fragments are held in strings as text markup. In SQL Server, XML variables and columns are instead tokenised to allow rapid access to the data within. This is fine, but can cause some odd problems, such as ' entitization'. What do you do if you need to preserve the formatting? As usual Rob Sheldon comes to our aid.
The TSQL aggregate function SUM() gives a number based on the addition of the values of multiple rows to each other. Do the same thing but with multiplication instead of addition.
The biggest security threat always seems to come from insiders and today Steve Jones talks about the need to monitor your environment.
It seems inevitable that many customers will end up paying more to get the same features they have today, under the new SQL Server licencing model, unless they respond to Microsoft's creativity with some of their own.
The challenge is to find the Episode and Sequence based on interval.
One of the more popular counters used by DBAs to monitor SQL Server performance, the Buffer Cache Hit Ratio, is useless as a predictor of imminent performance problems. Worse, it can be misleading. Jonathan Kehayias demonstrates this convincingly with some simple tests.
This article takes a closer look at SQL Server getdate() and sysdatetime() functions.
This level of the Stairway will cover the details of SQL Server transactional and merge replication, from understanding the basic terminology and methodology of setting up replication, to describing how it works and how the basic replication processes can be monitored.
A benefit of using computed columns is that they can save developers from having to write calculation logic at the application layer; at the table level, the application can simply reference the computed column. In addition, performance can be improved by persisting a computed column and building an index on it.
By Steve Jones
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hi , a new user wants to be able to add sql agent jobs...
In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:
UserID UserPermissions 15 23 37What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 3;See possible answers