I tried posting this earlier, but it doesn't seem to have appeared yet - so apologies if this comes up twice.
I am writing a web2py application which accepts a UK postcode then provides information about nearby postcodes. I have tried two methods, both of which work fine when the number of nearby postcodes is relatively few (less than a hundred). Method 1 uses the *contains *method as follows query &= db.t_properties.f_postcode.contains(result) where *result *is the list of nearby postcodes Method 2 does the query first and then uses *exclude* to eliminate the unwanted rows as follows rows.exclude(lambda row: row.f_postcode not in result) However, when the list of postcodes is larger (>about 100), both methods are failing. Method 1 appears to fail because of inherent limitations of sqlite (https://sqlite.org/limits.html - SQLITE_LIMIT_VARIABLE_NUMBER - albeit that refers to a limit of 999 rather than 99). Method 2 fails with the message: <type 'exceptions.RuntimeError'> maximum recursion depth exceeded in cmp Now, I'm pretty sure that I can solve it by moving to MySQL or another db but I'm pretty sure that I'm not doing the query in the optimal way. Can anyone give any advice as to the correct / most efficient way to accomplish this? thanks Rob. -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
