SQLServerCentral Editorial

T-SQL Requires the Right Approach

Some of the most problematic T-SQL code I’ve seen over the years originated because the developer approached T-SQL with techniques more suitable for developing applications. I often saw these issues in my consulting days and always took the opportunity to teach the customer instead of only fixing the problems. One reason is that SQL is […]

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Automating Flyway Undos

How to auto-generate first-cut undo scripts for every Flyway migration. For every new version of a database created by a Flyway versioned migration, we compare it to a 'source' directory containing object-level build scripts for the previous version. The SQL Compare engine does the rest, producing the associated undo script that will revert the database to the previous version, if required.

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Question of the Day

How Long is a Long I/O?

In SQL Server 2025, a long I/O is recorded in the error log with message 833. How long much an I/O request be outstanding before this message is written to the log?

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