-- 2. Note the INNER JOIN misses the teachers with no department and the departments with no teacher. -- COALESCE takes any number of arguments and returns the first value that is not null. COALESCE(x ...

NULL in SQL is a powerful concept, representing the absence of a value. It’s used when data is unavailable or unknown, but its usage requires careful consideration. The first step is understanding the ...

I'm trying to put together a DTS package to export data from SQL Server (2k) into a CSV file that I can in turn import into MySQL.<BR><BR>The problem I'm running into is SQL Server exports NULL values ...

Notifications You must be signed in to change notification settings This is a simple generator for enumerating data types in UNION SELECT NULL,NULL -- based SQLi attacks. I've tried to find a way of ...