Table code:
db.define_table('TABLE_of_sites',
Field('site_id', 'reference sites'),
Field('title', 'string'),
Field('date','datetime'),
...
Field('updated','datetime', update=request.now, writable=False),
format='%(site_id)s'
)
In controller:
table = db['TABLE_of_sites']
rows = db(table).select(distinct=table.title)
Gives the error:
ProgrammingError: missing FROM-clause entry for table "table_of_sites"
LINE 1: SELECT DISTINCT ON (TABLE_of_sites.title) "TABLE_of...
^
I printed the sql query that resulted from the above code. It has the
FROM-clause, so I don't know why it would give the error. This is the
printed query:
SELECT DISTINCT ON (TABLE_of_sites.title) "TABLE_of_sites"."id",
"TABLE_of_sites"."site_id", "TABLE_of_sites"."date",
"TABLE_of_sites"."title" FROM "TABLE_of_sites" WHERE ("TABLE_of_sites"."id"
IS NOT NULL);
I need to select 1 row for entries that appear multiple times for a
particular title, hence I'm using distinct (or aggregates like max() -
details in my previous post) but both are not working.
Thank you for your time and assistance!
On Tuesday, July 11, 2017 at 5:40:08 AM UTC+8, Massimo Di Pierro wrote:
>
> It took a year. Thanks to everybody who contributed. There are a ton of
> bug fixes and speed improvements.
>
> I would encourage everybody who contributed to add a comment in this
> thread explaining the main features/improvements they have made.
>
> If anything does not work or was broken it is only fault and I will remedy
> if reported.
>
> Massimo
>
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