Are you using rname feature?

If so, the issue may need to be further investigate as why SELECT DISTINCT
ON (TABLE_of_sites.title) is not double quoted and all the other table_name
and field instance are...

So maybe the flaw is somewhere in the escaping related to rname feature...

Richard

On Thu, Jul 13, 2017 at 2:11 PM, lyn2py <lyn...@gmail.com> wrote:

> Following this lead https://stackoverflow.com/questions/34708963/error-
> missing-from-clause-entry-for-table
>
> I discovered that if we add double quotes to the tablename, for all
> instances of the tablename, like this:
> "TABLE_of_sites"
>
> Then the query will work.
>
>
> On Friday, July 14, 2017 at 1:48:10 AM UTC+8, lyn2py wrote:
>>
>> 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
>>>
>> --
> 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)
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