Option
where of max
In the from of a column that the engine keeps, the filter that a linked row fits to be counted in the most.
Value
A filter as a record, as { status: 'open' }. Left out, every linked row is counted.
Example
TypeScript
last: date({ from: max({ of: orders, by: 'customer', where: { status: 'open' }, column: 'placedAt' }) })