T-SQL

Technical Article

Working with Time Spans and Durations in SQL Server

  • Article

What is the best way to return the "duration" of an event in SQL, given the start and end datetime values? How can we add up these durations to return grand totals? What data types should be used to return this data to our clients? How do we handle overflows, such as when hours go over 23 or minutes total up to over 59? Are there any T-SQL functions or other techniques that are useful in these scenarios?

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2007-10-24

4,455 reads

SQLServerCentral Article

Collation Error 468

  • Article

Most DBAs don't ever deal with multiple languages or different collation and sort order settings in SQL Server, but it can be a handy piece of information to have. Steve Jones brings us a quick look at a problem in comparing data across databases.

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2007-10-11

11,239 reads

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Hyperscale Replicas II

How many Azure SQL DB Hyperscale HA replicas can be configured as of Sept 2026?

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