[Koha-devel] To Chris : Problem on Loan Period calculation

[Henri-Damien LAURENT]

Hi,
We are trying to design a stat report module for Koha here in France 
with Paul.
And we have a problem on issues stats reporting.

In issues table, timestamp is modified as soon as the table is touched 
and returndate stores the date of return.
The issue date is never stored in this table anywhere else.

Nevertheless, it is stored in statistics. And returns are also stored there.

But then, there is no way to know how they are related to one another. A 
selection on itemnumber and borrower card will tell us it was issued and 
return, but not Which returns answers Which issue.
Suppose One borrows an item more than once and we are lost.

If one has a convenient code to know the average Loan period, that is a 
way to calculate the average time between issue and return date of an 
item for a borrower, we would be grateful.

Many Thanks

--
Henri-Damien LAURENT