diff --git a/Extensions/FreeSql.Extensions.AggregateRoot/AggregateRootRepository/AggregateRootRepository.cs b/Extensions/FreeSql.Extensions.AggregateRoot/AggregateRootRepository/AggregateRootRepository.cs
index 33ce0b744..e277f7169 100644
--- a/Extensions/FreeSql.Extensions.AggregateRoot/AggregateRootRepository/AggregateRootRepository.cs
+++ b/Extensions/FreeSql.Extensions.AggregateRoot/AggregateRootRepository/AggregateRootRepository.cs
@@ -74,7 +74,6 @@ public void AsTable(Func<Type, string, string> rule)
 			_asTableRule = rule;
 		}
 		public Type EntityType => _repository.EntityType;
-        public IDataFilter<TEntity> DataFilter => _repository.DataFilter;
 
         public void Attach(TEntity entity)
         {
diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index 3a86a24b7..394dc3681 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -480,6 +480,13 @@
             FreeSql.Repository Update 失败，因为设置了过滤器 {filterKey}: {filterValueExpression}，更新的数据不符合{entityString}
             </summary>
         </member>
+        <member name="M:FreeSql.IRepositoryUnitOfWork.GetRepository``1">
+            <summary>
+            在工作单元内创建联合主键的仓储类，工作单元下的仓储操作具有事务特点
+            </summary>
+            <typeparam name="TEntity"></typeparam>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.IBaseRepository.AsType(System.Type)">
             <summary>
             动态Type，在使用 Repository&lt;object&gt; 后使用本方法，指定实体类型
diff --git a/FreeSql.DbContext/Repository/ContextSet/RepositoryUnitOfWork.cs b/FreeSql.DbContext/Repository/ContextSet/RepositoryUnitOfWork.cs
new file mode 100644
index 000000000..24e29736a
--- /dev/null
+++ b/FreeSql.DbContext/Repository/ContextSet/RepositoryUnitOfWork.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Linq.Expressions;
+
+namespace FreeSql
+{
+
+    public interface IRepositoryUnitOfWork : IUnitOfWork
+    {
+        /// <summary>
+        /// 在工作单元内创建联合主键的仓储类，工作单元下的仓储操作具有事务特点
+        /// </summary>
+        /// <typeparam name="TEntity"></typeparam>
+        /// <returns></returns>
+        IBaseRepository<TEntity> GetRepository<TEntity>() where TEntity : class;
+    }
+
+    class RepositoryUnitOfWork : UnitOfWork, IRepositoryUnitOfWork
+    {
+
+        public RepositoryUnitOfWork(IFreeSql fsql) : base(fsql)
+        {
+        }
+
+        public IBaseRepository<TEntity> GetRepository<TEntity>() where TEntity : class
+        {
+            var repo = new DefaultRepository<TEntity, int>(_fsql);
+            repo.UnitOfWork = this;
+            return repo;
+        }
+    }
+}
diff --git a/FreeSql.Tests/FreeSql.Tests.DbContext2/AggregateRootRepositoryTest2.cs b/FreeSql.Tests/FreeSql.Tests.DbContext2/AggregateRootRepositoryTest2.cs
index c2c1affdf..448fced1f 100644
--- a/FreeSql.Tests/FreeSql.Tests.DbContext2/AggregateRootRepositoryTest2.cs
+++ b/FreeSql.Tests/FreeSql.Tests.DbContext2/AggregateRootRepositoryTest2.cs
@@ -21,6 +21,22 @@ public OrderRepository(IFreeSql fsql, UnitOfWorkManager uowManager) : base(uowMa
             public override ISelect<Order> Select => base.SelectDiy;
         }
 
+        [Fact]
+        public void Test3()
+        {
+            using (var fsql = g.CreateMemory())
+            {
+                var sql01 = fsql.Select<Order, OrderDetail, OrderDetail>()
+                    .InnerJoin((x, y, z) => y.OrderId == x.Id)
+                    .InnerJoin((x, y, z) => z.OrderId == x.Id)
+                    .ToSql((x, y, z) => new { x, y, z });
+                Assert.Equal(@"SELECT a.""Id"" as1, a.""Field2"" as2, b.""Id"" as3, b.""OrderId"" as4, b.""Field4"" as5, c.""Id"" as6, c.""OrderId"" as7, c.""Field4"" as8 
+FROM ""Order"" a 
+INNER JOIN ""OrderDetail"" b ON b.""OrderId"" = a.""Id"" 
+INNER JOIN ""OrderDetail"" c ON c.""OrderId"" = a.""Id""", sql01);
+            }
+        }
+        
         [Fact]
         public void Test2()
         {
diff --git a/FreeSql/Internal/CommonExpression.cs b/FreeSql/Internal/CommonExpression.cs
index e2e979339..1cab1b986 100644
--- a/FreeSql/Internal/CommonExpression.cs
+++ b/FreeSql/Internal/CommonExpression.cs
@@ -1899,7 +1899,15 @@ public string ExpressionLambdaToSql(Expression exp, ExpTSC tsc)
                             finds = tsc._tables.Where(a => a.Table.Type == tbtmp.Type && a.Alias == alias).ToArray();
                             if (finds.Any() == false && alias.Contains("__") == false)
                                 finds = tsc._tables.Where(a => a.Table.Type == tbtmp.Type).ToArray();
-                            if (finds.Any()) finds = new[] { finds.First() };
+                            if (finds.Any())
+                            {
+                                if (finds.Length > 1 && isa && parmExp != null) //非 a,b,c 多表查询时 #1830
+                                {
+                                    var tmpFinds = tsc._tables.Where(a => a.Parameter == parmExp).ToArray();
+                                    if (tmpFinds.Any()) finds = tmpFinds;
+                                }
+                                if (finds.Any()) finds = new[] { finds.First() };
+                            }
                         }
                         if (finds.Length != 1 && isa && parmExp != null)
                             finds = tsc._tables.Where(a => a.Parameter == parmExp).ToArray();