Multivalued attributes

[Phil Mayers]

On 28/07/2014 17:41, Arran Cudbard-Bell wrote:

> My inclination is to make '==' work as it used to in the users file and iterate
> over all instances of an attribute.

"and" or "or" semantics?

>
> Then use attribute selectors [<inst>] :<tag> to limit the attribute used in the
> condition.
>
> if (&foo == &bar) {
>
> }
>
> Would apply the operator to the cartesian product of &foo x &bar.

I can't say that particular syntax appeals to me.

Postgres uses "any / all" for this, e.g.

expr op [any|all] array-expr

...though I guess for consistency FR should be:

expr op [first|any|all] multi-attr

...with "first" being the current behaviour?