Timeline for When to use NULL and when to use an empty string?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 7, 2015 at 15:50 | comment | added | Jon of All Trades |
Note that MS SQL does not follow this rule: multiple NULL values will violate a UNIQUE constraint. Fortunately, starting with 2008 you can use a filtered index to get proper behavior.
|
|
| Jan 4, 2011 at 5:10 | comment | added | Peter Eisentraut | It is actually not the case that NULL != NULL, because that's NULL. ;-) | |
| Jan 4, 2011 at 1:47 | history | answered | Matthew Schinckel | CC BY-SA 2.5 |