- 增加 SqlExt.DistinctCount 扩展方法；#674 #533

FreeSql.DbContext/FreeSql.DbContext.xml

@@ -512,5 +512,14 @@
             <param name="that"></param>
             <returns></returns>
         </member>
+        <member name="M:Microsoft.Extensions.DependencyInjection.FreeSqlRepositoryDependencyInjection.AddFreeRepository(Microsoft.Extensions.DependencyInjection.IServiceCollection,System.Action{FreeSql.FluentDataFilter},System.Reflection.Assembly[])">
+            <summary>
+            批量注入 Repository，可以参考代码自行调整
+            </summary>
+            <param name="services"></param>
+            <param name="globalDataFilter"></param>
+            <param name="assemblies"></param>
+            <returns></returns>
+        </member>
     </members>
 </doc>

FreeSql.Tests/FreeSql.Tests/UnitTest5.cs

@@ -14,6 +14,18 @@ namespace FreeSql.Tests
 {
     public class UnitTest5
     {
+        [Fact]
+        public void TestDistinctCount()
+        {
+            var fsql = g.sqlite;
+
+            var sql = fsql.Select<ts_up_dywhere01>().ToSql(a => SqlExt.DistinctCount(a.status));
+            fsql.Select<ts_up_dywhere01>().Aggregate(a => SqlExt.DistinctCount(a.Key.status), out var count);
+
+            Assert.Equal(@"SELECT count(distinct a.""status"") as1 
+FROM ""ts_up_dywhere01"" a", sql);
+        }
+
         [Fact]
         public void TestUpdateDyWhere()
         {

FreeSql/Extensions/FreeSqlGlobalExpressionCallExtensions.cs

@@ -117,6 +117,18 @@ namespace FreeSql
             return default(TValue);
         }
 
+        /// <summary>
+        /// count(distinct name)
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="column"></param>
+        /// <returns></returns>
+        public static long DistinctCount<T>(T column)
+        {
+            expContext.Value.Result = $"count(distinct {expContext.Value.ParsedContent["column"]})";
+            return 0;
+        }
+
         #region 大小判断
         /// <summary>
         /// 大于 &gt;

FreeSql/FreeSql.xml

@@ -1188,6 +1188,14 @@
             <param name="defaultValue"></param>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.SqlExt.DistinctCount``1(``0)">
+            <summary>
+            count(distinct name)
+            </summary>
+            <typeparam name="T"></typeparam>
+            <param name="column"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.SqlExt.GreaterThan``1(``0,``0)">
             <summary>
             大于 &gt;