Subject Re: [firebird-support] problem with left outer join
Author Mitch Peek
Mitch Peek wrote:

>Gary T. Benner wrote:
>
>
>
>>Hi all,
>>
>>I'd like some input on an issue with using left outer join's which I use to retrieve data from tables where there may or may not be a record in the joined tables.
>>
>>This is our query:
>>
>> select *
>> from winetaste wt, wine w
>> left outer join person p on p.personid = wt.tasterid
>> left outer join region r on r.regionid = w.regionid
>> left outer join country c on c.countryid = r.countryid
>> left outer join winery y on y.wineryid = w.wineryid
>> where wt.wineid = w.vintageid
>> and wt.tasteid = 179008
>>
>>It fails with the error message "no current record for fetch operation".
>>
>>
>>
oops, forgot to adjust the where clause.

>select *
> from winetaste wt
> join wine w on wt.wineid=w.vintageid
> left outer join person p on p.personid = wt.tasterid
> left outer join region r on r.regionid = w.regionid
> left outer join country c on c.countryid = r.countryid
> left outer join winery y on y.wineryid = w.wineryid
> where wt.tasteid = 179008
>
>