diff --git a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
index 90533b9f7..73b58dc29 100644
--- a/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
+++ b/Src/Asp.Net/SqlServerTest/SqlServerTest.csproj
@@ -98,6 +98,7 @@
     <Compile Include="Demo\Demo0_SqlSugarClient.cs" />
     <Compile Include="Models\ViewOrder.cs" />
     <Compile Include="UnitTest\UInsert3.cs" />
+    <Compile Include="UnitTest\Unitadfa1231.cs" />
     <Compile Include="UnitTest\UnitSubToList.cs" />
     <Compile Include="UnitTest\Models\EntityBase.cs" />
     <Compile Include="UnitTest\UnitByteArray.cs" />
diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs b/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
index 64b4f5375..0c4f501d9 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/Main.cs
@@ -31,6 +31,7 @@ namespace OrmTest
         }
         public static void Init()
         {
+            Unitadfa1231.Init();
             UInsert3.Init();
             USelectTest.Init();
             UnitSubToList.Init();
diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/Unitadfa1231.cs b/Src/Asp.Net/SqlServerTest/UnitTest/Unitadfa1231.cs
new file mode 100644
index 000000000..edbbe1f49
--- /dev/null
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/Unitadfa1231.cs
@@ -0,0 +1,257 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static OrmTest.Unitadfa1231;
+
+namespace OrmTest 
+{
+    public class Unitadfa1231
+    {
+
+        public static void Init() 
+        {
+            var db = NewUnitTest.Db;
+
+            db.CurrentConnectionConfig.ConfigureExternalServices.EntityNameService = (x, p) => //处理列名
+            {
+                if (!p.DbTableName.Contains("_"))
+                    p.DbTableName = UtilMethods.ToUnderLine(p.DbTableName);//ToUnderLine驼峰转下划线方法
+            };
+            db.CurrentConnectionConfig.ConfigureExternalServices.EntityService = (x, p) => //处理列名
+            {
+                if (!p.DbColumnName.Contains("_"))
+                    p.DbColumnName = UtilMethods.ToUnderLine(p.DbColumnName);//ToUnderLine驼峰转下划线方法
+            };
+            db.CodeFirst.InitTables<LawsRegulations, LawsStudyRole, SysUserRole>();
+            var NeedStudyUserCountList = db.Queryable<LawsRegulations>()
+
+                  .InnerJoin<LawsStudyRole>((a, b) => a.LawsStudyRuleId == b.LawsStudyRuleId)
+
+                  .InnerJoin<SysUserRole>((a, b, c) => b.RoleId == c.RoleId)
+
+                  .Where((a, b, c) => a.status == 1 && a.type == 1)
+
+                  .Select((a, b, c) => new
+
+                  {
+
+                      rindex = SqlFunc.RowNumber($"{b.NeedStudyLength} desc ", $"{a.Id},{c.UserId}"),
+
+                      Id = a.Id,
+
+                      LawsStudyRuleId = a.LawsStudyRuleId,
+
+                      UserId = c.UserId,
+
+                      NeedStudyLength = b.NeedStudyLength
+
+                  })
+
+                  .MergeTable()
+
+                  .Where(u => u.rindex == 1)
+
+                  .GroupBy(u => u.LawsStudyRuleId)
+
+                  .Select(u => new { LawsStudyRuleId = u.LawsStudyRuleId, NeedStudyUserCount = SqlFunc.AggregateCount(u.UserId) })
+
+                  .ToList();
+             
+        }
+
+
+
+        [SugarTable("laws_regulations", "法律法规表")]
+
+        public class LawsRegulations : EntityBase
+
+        {
+
+            /// <summary>
+
+            /// 分类 （0目录 1文件）
+
+            /// </summary>
+
+            public int type { get; set; }
+
+            /// <summary>
+
+            /// 父Id
+
+            /// </summary>
+
+            public long pid { get; set; }
+
+            /// <summary>
+
+            /// 名称
+
+            /// </summary>
+
+            public string title { get; set; }
+
+            /// <summary>
+
+            /// 状态（0失效 1正常）
+
+            /// </summary>
+
+            public int status { get; set; }
+
+            /// <summary>
+
+            /// 法规学习规则表Id
+
+            /// </summary>
+
+            public long LawsStudyRuleId { get; set; }
+
+            /// <summary>
+
+            /// 失效时间
+
+            /// </summary>
+
+            public DateTime? invalidTime { get; set; }
+
+            /// <summary>
+
+            /// （过期时间）失效时间
+
+            /// </summary>
+
+            public DateTime? expireTime { get; set; }
+
+            /// <summary>
+
+            /// 是否新法速递
+
+            /// </summary>
+
+            public Boolean IsNewLaw { get; set; }
+
+            /// <summary>
+
+            /// 是否系统设定，禁止修改
+
+            /// </summary>
+
+            public Boolean IsSystem { get; set; }
+
+            /// <summary>
+
+            /// 排序
+
+            /// </summary>
+
+            public int orderNo { get; set; }
+
+            /// <summary>
+
+            /// 备注
+
+            /// </summary>
+
+            public string  remark { get; set; }
+
+
+
+
+
+         
+
+        }
+
+
+
+        [SugarTable("laws_study_role", "角色学习法规需要时长表")]
+
+        public class LawsStudyRole : EntityBaseId
+
+        {
+
+            /// <summary>
+
+            /// 法规学习规则表Id
+
+            /// </summary>
+
+            public long LawsStudyRuleId { get; set; }
+
+            /// <summary>
+
+            /// 角色Id
+
+            /// </summary>
+
+            public long RoleId { get; set; }
+
+            /// <summary>
+
+            /// 学习所需时长（分钟）
+
+            /// </summary>
+
+            public int NeedStudyLength { get; set; }
+
+
+
+
+
+            [Navigate(NavigateType.OneToMany, nameof(SysUserRole.RoleId), nameof(RoleId))]
+
+            public List<SysUserRole> SysUserRoleList { get; set; }
+
+        }
+
+
+
+
+
+        [SugarTable(null, "系统用户角色表")]
+
+ 
+
+        public class SysUserRole : EntityBaseId
+
+        {
+
+            /// <summary>
+
+            /// 用户Id
+
+            /// </summary>
+
+            [SugarColumn(ColumnDescription = "用户Id")]
+
+            public long UserId { get; set; }
+
+
+
+            /// <summary>
+
+            /// 角色Id
+
+            /// </summary>
+
+            [SugarColumn(ColumnDescription = "角色Id")]
+
+            public long RoleId { get; set; }
+
+
+
+            /// <summary>
+
+            /// 角色
+
+          
+
+        }
+
+
+    }
+}