本稿では、SQL ServerのTransact-SQL(T-SQL)の主要な関数について紹介しています。最初の記事では文字列を操作する関数について紹介しました。また、前回は日付と数値を操作する関数について紹介しました。 引き続き、本編では、NULL値を扱う関数と型変換に ...

The type of a geometry instance is null. Returns 0 if the instance isn't null. This method is primarily used by the SQL Server infrastructure; it isn't recommended that you use IsNull to test whether ...

Also, check if the same thing happens on other databases, i.e. whether this should be a SQL Server-only change or something with a wider scope. SQL Server documentation detailing all the above, plus ...

I've been in an argument with one of our devs that took an update statement with an inner join and made it a left join (because inner was missing some records somehow in the left table - tableB in ...