Disclaimer: This article features an undocumented technique. As with all material on this site, use at your own risk and test thoroughly.
8 Feb 2015: Demo updated to include a “refresh window / flush cached join results” step before GTRRing across a summary list relationship
Last week we looked at a technique to allow a summary field to be used as a relational predicate, directly, i.e., without the need to use a “helper field” as a predicate. If you’re not comfortable employing an undocumented hack in your solutions, I encourage you to read on anyway, because what you’re about to see may still be worth doing, whether you use last week’s method, or the safer (but a bit slower) “helper field” approach as delineated here on FileMaker Hacks last year in Summary List Fields in FM 13, part 1.
We’ve established that a summary list field can be used as a relational predicate (either directly or indirectly); the aim of today’s article and demo file, FM-13-Summary-List-As-Predicate, is to offer a compelling reason to do so. Continue reading “Summary List As Relational Predicate, part 2”
