Timeline for Does the 'difference' operation add expressiveness to a query language that already includes 'join'?
Current License: CC BY-SA 3.0
1 event
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 29, 2013 at 0:50 | history | answered | Erwin Smout | CC BY-SA 3.0 |