Ouch! Our Data Type Choices Did THAT?
It's an all too common occurrence to have table columns or variables that have been assigned less than ideal data types. My goal in this presentation is to show you the importance of choosing the proper data type; show you some guidelines in determining what an appropriate data type would be; and once chosen, give you some tools for its usage and management. I will demonstrate several performance and accuracy issues, along with their possible solutions, caused by either the assignment of inappropriate data types or improper usage of them. In addition I will cover several data type related functions, and point out caveats in their usage. I expect even advanced T-SQL developers and DBAs to walk away with a useful nugget or two.
Vern Rabe is an independent SQL Server consultant and contract trainer in Portland, OR. He has attained MCSE, MCITP (both Administration and Development), and MCT certifications, among others. Vern has been working with databases for 23 years, and has worked with SQL Server since version 4.21a. He provides broad technical SQL Server skills gained from the mixture of academic and practical experiences acquired from his classroom instructing and consulting contracts.
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