Hi, All -- We have a report with the following WHERE clause: WHERE b.biblionumber IN (SELECT biblionumber FROM items WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= dateaccessioned AND homebranch='KIMBALL') AND b.biblionumber IN (SELECT biblionumber FROM items WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= dateaccessioned AND homebranch='PLAISTOW') AND b.biblionumber IN (SELECT biblionumber FROM items WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= dateaccessioned AND homebranch='SANDOWN') Is there a way to declare & assign variables within a standard report? I'm familiar w/ the section in the Reports wiki on runtime parameters & variables (https://wiki.koha-community.org/wiki/SQL_Reports_Library#Runtime_Parameters). I've also played around w/ SET statements. But no luck finding a way to avoid repeating the date calculation three times without getting errors. As an aside, here's another approach to finding items owned by all 3 branches: WHERE DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= i.dateaccessioned AND i.homebranch IN ('kimball','plaistow','sandown') GROUP BY biblionumber HAVING count(DISTINCT homebranch) = 3 Thanks in advance for any guidance. All best, Cab Vinton Plaistow Public Library Plaistow, NH