pub fn checked_row_bound(clause: &'static str, expr: &Expr) -> Result<RowBound>Expand description
Resolve a LIMIT/OFFSET/FETCH bound. Names clause and the value as
written on failure. Every row-bound site routes through here.
Expr::Value(Value::Null) resolves to RowBound::Unbounded —
PostgreSQL treats a NULL LIMIT/OFFSET/FETCH argument as no bound
at all. A prepared LIMIT $1 reaches this shape at Parse-time
schema inference, before the real bound is bound at Execute time.