diff --git a/Src/Asp.NetCore2/SqliteTest/UserTestCases/CrossDatabase04.cs b/Src/Asp.NetCore2/SqliteTest/UserTestCases/CrossDatabase04.cs
new file mode 100644
index 000000000..7e29a0e58
--- /dev/null
+++ b/Src/Asp.NetCore2/SqliteTest/UserTestCases/CrossDatabase04.cs
@@ -0,0 +1,142 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using SqlSugar;
+namespace OrmTest
+{
+    public class CrossDatabase04
+    {
+        public static void Init()
+        {
+
+            var db = new SqlSugarClient(new List<ConnectionConfig>()
+            {
+                new ConnectionConfig(){ConfigId="A",DbType=DbType.Sqlite,ConnectionString="DataSource=/A_DB.sqlite",IsAutoCloseConnection=true,
+                ConfigureExternalServices=new ConfigureExternalServices(){
+                    EntityNameService=(x,y)=>{
+                      y.DbTableName=y.DbTableName.ToLower();
+                    },
+                    EntityService=(x,y)=>{
+                               y.DbColumnName=y.DbColumnName?.ToLower();
+                    }
+                }
+                },
+                new ConnectionConfig(){ConfigId="B",DbType=DbType.Sqlite,ConnectionString="DataSource=/B_DB.sqlite",IsAutoCloseConnection=true,
+                      ConfigureExternalServices=new ConfigureExternalServices(){
+                    EntityNameService=(x,y)=>{
+                      y.DbTableName=y.DbTableName.ToUpper();
+                    },
+                    EntityService=(x,y)=>{
+                               y.DbColumnName=y.DbColumnName?.ToUpper();
+                    }
+                }},
+                new ConnectionConfig(){ConfigId="AB",DbType=DbType.Sqlite,ConnectionString="DataSource=/AB_DB.sqlite",IsAutoCloseConnection=true  }
+            });
+            db.GetConnection("A").Aop.OnLogExecuting =
+            db.GetConnection("B").Aop.OnLogExecuting =
+            db.GetConnection("AB").Aop.OnLogExecuting = (s, p) =>
+            {
+
+                Console.WriteLine(s);
+            };
+
+
+            db.GetConnection("A").CodeFirst.InitTables<OperatorInfo>();
+            db.GetConnection("B").CodeFirst.InitTables<Role>();
+            db.GetConnection("AB").CodeFirst.InitTables<OptRole>();
+
+            db.GetConnection("A").DbMaintenance.TruncateTable<OperatorInfo>();
+            db.GetConnection("B").DbMaintenance.TruncateTable<Role>();
+            db.GetConnection("AB").DbMaintenance.TruncateTable<OptRole>();
+
+            db.GetConnection("A").Insertable(new OperatorInfo() { id = 10, realname = "A" }).ExecuteCommand();
+            db.GetConnection("B").Insertable(new Role() { id = 101, name = "B" }).ExecuteCommand();
+            db.GetConnection("AB").Insertable(new OptRole() { Id = 1, OperId = 10, RoleId = 101 }).ExecuteCommand();
+
+            var x = db.GetConnection("A").Queryable<OperatorInfo>()
+               .CrossQuery(typeof(Role),"B")
+               .CrossQuery(typeof(OptRole), "AB")
+               .Includes(z => z.Roles.Where(it=>it.id==1).ToList()).ToList();
+
+           
+        }
+        /// <summary>
+        /// 描述：
+        /// 作者：synjones
+        /// 时间：2022-04-20 21:30:28
+        /// </summary>
+        [SugarTable("unit_operatorinfo213")]
+        [Tenant("A")]
+        public partial class OperatorInfo
+        {
+            /// <summary>
+            /// 主键
+            /// </summary>
+            [SugarColumn(IsPrimaryKey = true)]
+            public int id { get; set; }
+
+            /// <summary>
+            /// 姓名
+            /// </summary>
+            public string realname { get; set; }
+
+            /// <summary>
+            /// 多角色
+            /// </summary>
+            [Navigate(typeof(OptRole), nameof(OptRole.OperId), nameof(OptRole.RoleId))]//名字换
+            public List<Role> Roles { get; set; }
+        }
+
+        /// <summary>
+        /// 描述：
+        /// 作者：synjones
+        /// 时间：2022-04-20 21:30:28
+        /// </summary>
+        [SugarTable("unit_role112313")]
+        [Tenant("B")]
+        public partial class Role
+        {
+            /// <summary>
+            /// 角色
+            /// </summary>
+            [SugarColumn(IsPrimaryKey = true)]
+            public int id { get; set; }
+
+            /// <summary>
+            /// 角色名称
+            /// </summary>
+            public string name { get; set; }
+
+        }
+
+
+        /// <summary>
+        /// 描述：
+        /// 作者：synjones
+        /// 时间：2022-04-21 14:35:09
+        /// </summary>
+        [SugarTable("Unit_Operator_Role123131")]
+        [Tenant("AB")]
+        public partial class OptRole
+        {
+            /// <summary>
+            /// 
+            /// </summary>
+            [SugarColumn(IsPrimaryKey = true)]
+            public int Id { get; set; }
+
+            /// <summary>
+            /// 
+            /// </summary>
+            public int OperId { get; set; }
+
+            /// <summary>
+            /// 
+            /// </summary>
+            public int RoleId { get; set; }
+
+
+        }
+    }
+}