User contributions for Gfilis

8 June 2015

• 16:1816:18, 8 June 2015 diff hist +28‎ m Self join ‎ Corrected question #9 to request information that matches "Show what the answer should be..." result.

5 June 2015

• 14:0014:00, 5 June 2015 diff hist +20‎ m Using Null ‎No edit summary
• 13:5513:55, 5 June 2015 diff hist +1‎ m More JOIN operations ‎No edit summary
• 13:0813:08, 5 June 2015 diff hist +8‎ m More JOIN operations ‎No edit summary
• 13:0013:00, 5 June 2015 diff hist −4‎ m Using Null ‎ →‎Teachers and Departments

3 June 2015

• 18:0618:06, 3 June 2015 diff hist +330‎ N User talk:Gfilis ‎ Created page with "I think More Join Operations question #15 might have a problem. I get "Wrong answer. Some of the data is incorrect." with the following query: select m.title,count(c.actorid..." current