MERGE statement pitfalls include duplicate source keys, concurrency races, trigger surprises, and complex actions that deserve testing.
Migrating From MySQL to SQL Server: The Gotchas
Migrating from MySQL to SQL Server needs identity, collation, paging, and date rules, with SSMA assessing and converting the bulk of the work.
SQLAuthority News – Ahmedabad – Gandhinagar SQL Server User Group Meet – Dec 19, 2009
Notes from the December 2009 Ahmedabad and Gandhinagar SQL Server User Group meeting, with Tejas Shah on PIVOT cross tab queries and my talk on SQL myths.
Explaining Database Risk to Managers
Explain database risk to managers by turning backups, patching, and capacity into clear impact, likelihood, cost, and action choices.
SQL SERVER – Unique Nonclustered Index Creation with IGNORE_DUP_KEY = ON – A Transactional Behavior
When is IGNORE_DUP_KEY = ON useful? Jacob Sebastian and I built an example that shows its transactional behavior when you insert only nonduplicate rows.
SQL SERVER – SQL Server RDL Specification
The RDL Specification describes Report Definition Language, the XML schema behind SQL Server reports. I list the 2000, 2005 and 2008 versions.
SQL SERVER – Fix: Error: 262 : SHOWPLAN permission denied in database
My students got Msg 262, SHOWPLAN permission denied, when they tried to view an execution plan. One GRANT SHOWPLAN statement fixes it.