NULL is a fickle beast, and for the people not accustomed to how it works in SQL, it can create many problems (read: incorrect data output). This is especially true for those coming from ...

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 ...

When querying an entity string column using the expression "!string.Contains('somestring)" the generated SQL does not account for (nor bring back) NULL string values. Normally I would simply change my ...

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 ...

Abstract: The lack of information within relational databases expressed as NULL values presents a problem in ensuring the quality of data and the information retrieved by SQL queries. This is so ...