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- 增加 pgsql 扩展方法 ISelect<T>.DistinctOn；#1680

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2881099 2023-12-09 02:11:09 +08:00
parent 338daf398e
commit 8692efcd3d
1 changed files with 2 additions and 2 deletions
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4
Providers/FreeSql.Provider.PostgreSQL/PostgreSQLExtensions.cs
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@ -40,9 +40,9 @@ public static partial class FreeSqlPostgreSQLGlobalExtensions
/// PostgreSQL<para></para> /// PostgreSQL<para></para>
/// select distinct on(subject) * from score order by subject, score desc, name; /// select distinct on(subject) * from score order by subject, score desc, name;
/// </summary> /// </summary>
public static ISelect<T1> DistinctOn<T1, TKey>(this ISelect<T1> query, Expression<Func<T1, object>> selector) public static ISelect<T1> DistinctOn<T1>(this ISelect<T1> query, Expression<Func<T1, object>> selector)
{ {
var select = query as FreeSql.PostgreSQL.Curd.PostgreSQLSelect<T1>; var select = query as FreeSql.PostgreSQL.Curd.PostgreSQLSelect<T1>;
if (select == null) throw new Exception($"{nameof(DistinctOn)} 是 FreeSql.Provider.PostgreSQL 特有的功能"); if (select == null) throw new Exception($"{nameof(DistinctOn)} 是 FreeSql.Provider.PostgreSQL 特有的功能");
var s0p = select as Select0Provider; var s0p = select as Select0Provider;
var orderByOld = s0p._orderby; var orderByOld = s0p._orderby;