SQLite Select query sometimes returns a random number

I have recently upgraded the app I was working on to work with IOS 8, it all works fine. However, sometimes when I start the application my SQLite SELECT query returns:

322027609095939383707792575607519049745533997457083986970229508889061718536004240161547019569861752725561453245069316208671532472953637165437644212189011829130655476571403671022488303200932764265703966515944712440546988860820727338331302000475693699091660800.000000,84902528013508089164778277091711377903148050997045969503110252996583267358608226520193514416555326678785596608608177469762862141711497480246768422703670157146950930769110892544.000000

as the value stored on that row, it isn't there is no value there yet. This error then solves itself the next time I try to access that data - returning the correct value of 0.000000.

Any ideas why??

P.S.

I haven't included any code with this, I can if it's necessary - but I thought as it was working before on IOS4 and it's an intermittent error it wasn't an issue with the code.