NULL complexities – Part 1
SQL Performance
DECEMBER 11, 2019
NULL handling is one of the trickier aspects of data modeling and data manipulation with SQL. Let's start with the fact that an attempt to explain exactly what a NULL is is not trivial in and of itself. Even among people who do have a good grasp of relational theory and SQL, you will hear very strong opinions both in favor and against using NULLs in your database.
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