Subject Re: [firebird-support] Varchar size overhead
Author Ann W. Harrison
Ivan Prenosil wrote:
> "Ann W. Harrison" wrote:
>> Thus the string "abcddddef" becomes <3>abc<-4>d<2>ef
> And the range of values in one signed byte is -128..127,
> thus allowing to compress up to 128 same bytes into two.
> (can "-1" be used as repeat count ??)

No, and the compression would be slightly better if the
algorithm for duplicates were <n * -1 + 3> for n <=0.
But I don't think it is.