No, if a represent function requires data from another table (e.g., a reference field's represent function typically pulls data from the record it references in another table), the DAL will do a separate select for *each* record, so this is not particularly efficient when rending a lot of records. If performance is an issue, you should instead do a join to select the relevant fields from the foreign table directly.
Anthony On Monday, January 29, 2018 at 9:07:28 AM UTC-5, Pierre wrote: > > > http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#Rendering-rows-using-represent > > does* rows.render() *involve tables *joint operations* in the > background ? > -- 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]. For more options, visit https://groups.google.com/d/optout.
