// PostgreSQL COUNT() always returns bigint, so we need to downcast to int
// TODO: Translate Count with predicate for GroupBy (see base implementation)
public override SqlExpression TranslateCount(Expression expression = null)
=> _sqlExpressionFactory.Convert(
_sqlExpressionFactory.ApplyDefaultTypeMapping(
_sqlExpressionFactory.Function("COUNT", new[] { _sqlExpressionFactory.Fragment("*") }, typeof(long))),
typeof(int), _sqlExpressionFactory.FindMapping(typeof(int)));
