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 ...

I have to write a query on a positively atrocious table (this is with MSSQL 2005). Basically, multiple "lists" are stored in a single gigantic table called "UserData". I'm building the SQL statement ...

On a table using the sql builder I added a filter to only display rows where a date column is null and ended up with SQL that looked like this. A value can never ...