I see!  And I feel it is right.
Therefore I suggested using a different private leaderboard about 2 weeks ago
where you have to request the access code from Developer Community Managers.
Instead of this public published access key. It could be kind of a registration.
And with 23 actives ist's not much extra effort + no need for recalculation and filtering.

Eventually, this may happen next year.
Though technically It may still be possible this year it's just bad taste
to change rules if you dislike the results during the game.

The next challenge is that ISC employees are excluded from prizes.
which requires a further step of filtering.  Though I have this Info, I didn't apply. 

As your properties are NOT Calculated then there is a Storage Entry (check Storage section) 
they are persisted and not just there on run-time

  • copy the class including Storage Definition !!!
  • set class  Parameter MANAGEDEXTENT  = 0;  to allow access to original Globals
  • remove SqlCompute*  from the Properties LastModified*   ; to make it normal Properties
  • now write to these properties whatever you need to do by object access or SQL  

The SQL statement you pass is an ordinary string.
So with LongString enable it is about 3,4MB  and of course I have never tried to write so
much in a single string. That's boring and hard to type.
If you mean running long it's probably just useful on the command line or background.
an ordinary connection to over ODBC/JDBC or HTTP in browser will most likely time out. 
What type of LONG are you referring to ?