[Dbix-class] MSSQL/Page/Prefetch problem

[Peter Rabbitson]

Alan Humphrey wrote:
> Hi all -
> 
> I just upgraded to version 0.08103 and have encountered a problem using page
> in conjunction with prefetch against a MSSQL database.
> 
> Given:
> 
>     my $result = $schema->resultset('Surveys')->search(
>         {},
>         {   page     => 1,
>             rows     => 25,
>             order_by => ['survey_site_id', 'survey_date'],
>             prefetch => 'site'
>         }
>     )->first();
> 
> Executing the code against MSSQL generates this error:
> 
> DBI Exception: DBD::Sybase::st execute failed: Server message number=8156
> severity=16 state=1 line=1 server=SQLA4 text=The column 'comments' was
> specified multiple times for 'foo'. [for Statement "  SELECT * FROM
>   (
>     SELECT TOP 25 * FROM
>     (
>         SELECT TOP 25  me.id, me.survey_site_id, me.start_time, me.end_time,
> me.zero_ref_point, me.survey_date, me.weather, me.precipitation,
> me.sea_state, me.tide_movement, me.visibility_distance,
> me.poor_visibility_reason, me.poor_visibility_reason_other, me.equipment,
> me.binocular_magnification, me.scope_magnification, me.walker_count,
> me.dog_count, me.power_boat_count, me.unpowered_boat_count,
> me.other_activities_name, me.other_activities_count, me.comments,
> me.is_complete, me.raptor1_bird_id, me.raptor1_count, me.raptor1_affect,
> me.raptor2_bird_id, me.raptor2_count, me.raptor2_affect, me.raptor3_bird_id,
> me.raptor3_count, me.raptor3_affect, site.site_code, site.site_name,
> site.position, site.elevation, site.comments FROM surveys me  JOIN
> survey_sites site ON site.site_code = me.survey_site_id  ORDER BY
> survey_site_id ASC, survey_date ASC
>     ) AS foo
>     ORDER BY survey_site_id DESC, survey_date DESC
>   ) AS bar
>    ORDER BY survey_site_id, survey_date
> 
> 
> This used to work.  Any ideas?  Thanks!
> 

This has been fixed in trunk. Please try and report any problems.
http://dev.catalyst.perl.org/repos/bast/DBIx-Class/0.08/trunk/