Type Alias JoinResult<L, R, How>

JoinResult: How extends "inner"
| "cross"
    ? Simplify<L & R>
    : How extends "left"
        ? Simplify<L & Nullable<R>>
        : How extends "right"
            ? Simplify<Nullable<L> & R>
            : How extends "outer" ? Simplify<Nullable<L> & Nullable<R>> : L

Schema of a join result. Default collision naming (right *_right) and custom lSuffix/rSuffix are not modelled in the type — use runtime column names when suffixes matter.