Hi Speak Spanish ? Ing. Guillermo González El lun., 15 de mar. de 2021 1:34 a. m., Carlos Lopez <clopez@dml.vic.edu.au> escribió:
Hi everyone
I have the following reports that I would like to combine into one:
SELECT categories.description, COUNT(borrowers.borrowernumber) FROM borrowers, categories WHERE borrowers.categorycode = categories.categorycode AND borrowers.date_renewed BETWEEN <<Expiry date BETWEEN (yyyy-mm-dd)|date>> AND <<and (yyyy-mm-dd)|date>> GROUP BY borrowers.categorycode
(count the number of borrower renewals between 2 given dates and provide a breakdown by borrower category)
And
SELECT categories.description, COUNT(borrowers.borrowernumber) FROM borrowers, categories WHERE borrowers.categorycode = categories.categorycode AND borrowers.dateenrolled BETWEEN <<Expiry date BETWEEN (yyyy-mm-dd)|date>> AND <<and (yyyy-mm-dd)|date>> GROUP BY borrowers.categorycode
(same thing but for new enrolments rather than renewals)
What I would like is a report that will give me 3 columns: Borrower category (from categories.description), a count of newly-enrolled borrowers, and a count of renewed borrowers, with a breakdown by borrower category, but I only want the user to have to enter a single starting date and a single end date (not 2 identical date ranges).
I tried to run this one but it looks as though we're not allowed to set variables before the SELECT statement:
SET @start_date = <<Start of date range (yyyy-mm-dd)|date>> SET @end_date = <<End of rate range (yyyy-mm-dd)|date>> SELECT categories.description AS "BORROWER CATEGORY", SUM(CASE WHEN borrowers.dateenrolled BETWEEN @start_date AND @end_date THEN 1 ELSE 0) NewBorrowers, SUM(CASE WHEN borrowers.date_renewed BETWEEN @start_date AND @end_date THEN 1 ELSE 0) RenewedBorrowers FROM borrowers, categories WHERE borrowers.categorycode = categories.categorycode GROUP BY borrowers.categorycode
Is something like what I'm trying to do even possible on Koha, or should I be happy with my 2 reports?
With kind regards from the Dalton McCaughey Library Team
Carlos Lopez
Dalton McCaughey Library | 29 College Crescent, Parkville, VICTORIA 3052 Ph: 03 9340 8888 ext.1 | library@dml.vic.edu.au<mailto: library@dml.vic.edu.au> | library.dmlibrary.org.au
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