just replace *GROUP_CONCAT* with *string_agg * воскресенье, 15 ноября 2020 г. в 02:19:52 UTC+3, [email protected]:
> I have postgres. How would it look for that? > > On Saturday, November 14, 2020 at 9:03:13 AM UTC-8 [email protected] > wrote: > >> Just in case : pydal doesnt support backend specific aggregate functions >> >> >> суббота, 14 ноября 2020 г. в 19:54:35 UTC+3, [email protected]: >> >>> There is no db.executesql >>> >>> суббота, 14 ноября 2020 г. в 19:51:52 UTC+3, [email protected]: >>> >>>> sorry, did not mean direct SQL through db.executesql , meant through DAL >>>> >>>> On Saturday, November 14, 2020 at 8:23:11 AM UTC-8 [email protected] >>>> wrote: >>>> >>>>> Assuming sqlite: >>>>> person_cnt = >>>>> db.PERSON_PROJECT_PRIORITY.person_fk.count().with_alias('person_cnt') >>>>> >>>>> >>>>> prioritySet = db((db.PERSON.id <http://db.person.id/> == >>>>> PERSON-PROJECT-PRIORITY.person_fk) & (PROJECT.id == >>>>> PERSON-PROJECT-PRIORITY.project_fk)).select( >>>>> ..., >>>>> person_cnt, >>>>> 'GROUP_CONCAT(person.person_name,",") AS person_list' >>>>> groupby = db.PERSON-PROJECT-PRIORITY.project_fk, >>>>> ) >>>>> >>>>> суббота, 14 ноября 2020 г. в 09:40:17 UTC+3, [email protected]: >>>>> >>>>>> How to write a statement that counts which projects are the priority >>>>>> of most people >>>>>> >>>>>> PROJECT >>>>>> id >>>>>> project_name >>>>>> >>>>>> PERSON >>>>>> id >>>>>> person_name >>>>>> >>>>>> PERSON_PROJECT_PRIORITY >>>>>> person_fk >>>>>> project_fk >>>>>> >>>>>> prioritySet = db((db.PERSON.id == PERSON-PROJECT-PRIORITY.person_fk) >>>>>> & (PROJECT.id == PERSON-PROJECT-PRIORITY.project_fk)).select() >>>>>> >>>>>> How to sort by count of projects which have priority in order of the >>>>>> most persons' priority? >>>>>> >>>>>> Output looks like this: >>>>>> >>>>>> Paint-the-house (10) [Means is the top priority for 10 people] >>>>>> Plant-a-garden (5) >>>>>> Clean-out-garage (2) >>>>>> >>>>>> If you have additional time, how to write so output looks like: >>>>>> >>>>>> Paint-the-house (10) Tom, Sue, Tony, Ted, Mary, Fred, Sal, Chris, Ed, >>>>>> Sally >>>>>> Plant-a-garden (5) Harry, George, Joanne, Tony, Janet >>>>>> Clean-out-garage (2) Clyde, Jane >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Alex Glaros >>>>>> >>>>> -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/web2py/12711f74-7480-48fd-b9e7-4dc141e3d825n%40googlegroups.com.
