Distinct

relationalai.semantics.frontend.base

Distinct(*items: Value, model: Model)

Represents a “distinct” wrapper for values in a query.

Distinct objects are created by Model.distinct (and the convenience function distinct). Use them either as the only argument to Model.select to remove duplicate rows, or as an argument wrapper for aggregates (for example count(m.distinct(Person.name))) to aggregate over unique values.

Parameters

• *items

  (Value, default: ()) - One or more semantics.frontend.base.Value items to consider when removing duplicates.

• model

  (Model) - The model this wrapper belongs to.

Notes

Most users should not instantiate this class directly. Prefer Model.distinct. Distinct must be used in the contexts described above; using it elsewhere raises RAIException.

Inheritance Hierarchy

Used By

 semantics > frontend > base
├──  Aggregate
└──  Statement

Returned By

 semantics
├──  frontend > base
│   └──  Model
│       └──  distinct
└──  distinct