I made even CTE+recursive: https://github.com/web2py/pydal/issues/627
But have no time to make a PR воскресенье, 15 ноября 2020 г. в 03:41:24 UTC+3, [email protected]: > for example, you can use window function to get records with count in > one query: > db(...).select( ... , 'count(id) OVER() AS cnt' ) > > > воскресенье, 15 ноября 2020 г. в 03:35:34 UTC+3, [email protected]: > >> It was in 2017 >> Now you can pass to select raw-sql-strings with any expression, just end >> with ' ... *AS* some_name' (*AS* must be in uppercase ) >> >> воскресенье, 15 ноября 2020 г. в 02:54:53 UTC+3, [email protected]: >> >>> looks like need executeSQL needed for string_agg: >>> Is it possible to do more advanced queries (like using string_agg) with >>> DAL in the meantime? >>> Massimo Di Pierro >>> Apr 12, 2017, 4:21:36 AM >>> to [email protected] >>> You have to use db.executesql for that. Sorry. >>> >>> On Saturday, November 14, 2020 at 3:28:06 PM UTC-8 [email protected] >>> wrote: >>> >>>> 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/0fc7b85c-2ba6-405f-bbf7-309e4524d4e2n%40googlegroups.com.
