LambdicSql -DistinctとAll

α0.0.36をリリースしました。
www.nuget.org

DistinctとAll

enumで指定できるように変更しました。

Select文

[TestMethod]
public void Distinct()
{
    var query = Db<DB>.Sql(db =>
        Select(AggregatePredicate.Distinct, new
        {
            id = db.tbl_remuneration.staff_id
        }).
        From(db.tbl_remuneration));

    //文字列化
    Debug.Print(query.Build(typeof(SqlConnection)).Text);

    //Dapperを使っているなら、以下のように実行できます
    var datas = _connection.Query(query).ToList();
}

SELECT DISTINCT
tbl_remuneration.staff_id AS id
FROM tbl_remuneration

集計関数

[TestMethod]
public void GroupByPredicateDistinct()
{
    var query = Db<DB>.Sql(db =>
        Select(new SelectedData()
        {
            Name = db.tbl_staff.name,
            Count = (int)Count(AggregatePredicate.Distinct, db.tbl_remuneration.money),
            Total = Sum(AggregatePredicate.Distinct, db.tbl_remuneration.money)
        }).
        From(db.tbl_remuneration).
            Join(db.tbl_staff, db.tbl_remuneration.staff_id == db.tbl_staff.id).
        GroupBy(db.tbl_staff.id, db.tbl_staff.name));

    //文字列化
    Debug.Print(query.Build(typeof(SqlConnection)).Text);
            
    //Dapperを使っているなら、以下のように実行できます
    var datas = _connection.Query(query).ToList();
}

SELECT
tbl_staff.name AS Name,
	COUNT(DISTINCT tbl_remuneration.money) AS Count,
	SUM(DISTINCT tbl_remuneration.money) AS Total
FROM tbl_remuneration
	JOIN tbl_staff ON (tbl_remuneration.staff_id) = (tbl_staff.id)
GROUP BY tbl_staff.id, tbl_staff.name