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SQL gives you no other options though, there's no other construct that means "not present", since NULL is unknown vs. not present.
by ryanbrunner 4y ago
SQL gives you no other options though, there's no other construct that means "not present", since NULL is unknown vs. not present.
- SnowHill9902 4y agoIt depends on your column. If you have a products table and a certain handmade product has no upc, it’s correct to use ‘’ as its value rather than NULL because you know for a fact that its non-existent. Some people respect NULL too much.