Justin Cooney
Web Development Tips and Examples
Author: Justin Cooney
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There are three commands that can be used in SQL Server to query version information or information about the server hosting SQL Server. These commands can be run in SSMS directly, or can be used in code, for example to tailor queries for a particular database version. The commands are xp_msver, @@Version, and sp_server_info. I…
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Global Temporary tables are defined on creation by adding the double pound sign (##) as a prefix. Unlike temporary tables they are available to all SQL Server sessions until the table is destroyed/the creating session goes out of scope. Global Temporary tables are similar to regular temporary tables in that they exist in tempdb and…
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MS SQL Server allows using the TSQL hint ‘WITH (NOLOCK)’ to the joins of SELECT statements. At times the WITH (NOLOCK) hint can be justified and useful, but it comes with inherent dangers that are often ignored or not understood. The WITH (NOLOCK) hint is often overused or is used when it should not be.…