Divide Large Data Blob?

Rick Harrison harrison at all-auctions.com
Mon May 16 19:57:31 EDT 2022

Hi Bob,

I just need to make one pass at the data, so building an SQL database for it doesn’t make sense.

I don’t have any definitive line for the boundary between good and bad data.  It’s more of a
consistent first guess used just to cut down on the amount of data to process.  I start looking
for the good data after about a third of it has passed by.



> On May 16, 2022, at 6:00 PM, Bob Sneidar via use-livecode <use-livecode at lists.runrev.com> wrote:
> Do you know exactly which lines you need to toss, or do you need to searc the data to find out where the beginning and end of the useful data is? 
> If the former, then just put line x to y of your data into a new variable. If the latter, then a divide and conquer approach might be the answer. Get the line 30% in, test for valid, get the line 40% in, test, then 35% then 32.5% or 37.5% depending on your test. 
> You may only have to do this a dozen or so times to find the exact line where your valid data begins. 
> The other way of course is to get it all into a SQL database (how did you all know I was going to say that??) The downside is that you have to iterate through all your data once. The upside is a good one liner query statement may be all you need to process your data. And if you need to make multiple passes at your data, all the better. 
> Bob S

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