Dates and Times in SQL Server: SMALLDATETIME

Last week I spoke about a world wary data type for storing dates and times in a single column, with a granularity of three milliseconds, DATETIME. But let’s say you don’t need that kind of accuracy and are happy with a granularity to the nearest minute. Maybe you’re storing time cards and don’t think it’s[…]

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Be Wary of Date Formatting in T-SQL

Today’s public service announcement is a reminder to be wary of date formatting in SQL Server. On a recent mailing list discussion, one person demonstrated the following code (which I’ve adapted for this post): SET LANGUAGE ‘us_english’; GO DECLARE @StartDate DATETIME = ‘2017-07-12’; SELECT @StartDate; GO DECLARE @StartDate DATE = ‘2017-07-12’; SELECT @StartDate; GO DECLARE[…]