avg method

Expression<double> avg(
  1. {Expression<bool>? filter}

Return the average of all non-null values in this group.

To only consider rows matching a predicate, you can set the optional filter. Note that filter is only available from sqlite 3.30, released on 2019-10-04. Most devices will use an older sqlite version.


Expression<double> avg({Expression<bool>? filter}) =>
    _AggregateExpression('AVG', [this], filter: filter);