in a query like `'SELECT eladaid, akid from ada join ak on (adaid = eladaid)'` a bigger range value can be narrowed to a smaller comparing one. in this case: `eladaid` could be narrowed to the type of `adaid`
in a query like
'SELECT eladaid, akid from ada join ak on (adaid = eladaid)'a bigger range value can be narrowed to a smaller comparing one.
in this case:
eladaidcould be narrowed to the type ofadaid