On 11/22/2011 12:39 AM, Jasmin Dizdarevic wrote:
> Hi,
>
> we have a reporting tool, that sometimes uses this kind of condition.
> ...WHERE a.field = a.field
>
> To explain this: a.field can be filtered by the user. the user can
> choose some values. if he does, this condition will be build:
> ...WHERE a.field IN (1,2,3)
>
> If the user doesn't choose any values the * = * condition is used.
>
> Since 9.1 we're experiencing problems with this construction. Have
> there been any changes to the planner regarding this?
>
> Ty
> Regards, Jasmin
If it's a commercial product please name that reporting tool: clearly
it's to be avoided. If it's an in-house tool clearly it's broken.
