diff --git a/nuget-publish.bat b/nuget-publish.bat
index 60b8ba39..d8a62935 100644
--- a/nuget-publish.bat
+++ b/nuget-publish.bat
@@ -1,9 +1,9 @@
 :start
 ::定义版本
-set EFCORE2=2.5.0.14
-set EFCORE3=3.5.0.14
-set EFCORE5=5.5.0.14
-set EFCORE6=6.5.0.14
+set EFCORE2=2.5.0.15
+set EFCORE3=3.5.0.15
+set EFCORE5=5.5.0.15
+set EFCORE6=6.5.0.15
 
 ::删除所有bin与obj下的文件
 @echo off
diff --git a/samples/Sample.SqlServer/Controllers/ValuesController.cs b/samples/Sample.SqlServer/Controllers/ValuesController.cs
index c04e8a2f..d3cf977b 100644
--- a/samples/Sample.SqlServer/Controllers/ValuesController.cs
+++ b/samples/Sample.SqlServer/Controllers/ValuesController.cs
@@ -95,7 +95,15 @@ namespace Sample.SqlServer.Controllers
             //          };
             //var listAsync = await sql.ToListAsync();
             //var resultx112331tt = await _defaultTableDbContext.Set<SysTest>().AsNoTracking().CountAsync();
+            var resultx112331tt11234 = await _defaultTableDbContext.Set<SysTest>().Skip(2).MaxAsync(o=>o.Id);
+            var resultx112331tt1123 = await _defaultTableDbContext.Set<SysTest>().Skip(2).Take(2).ToListAsync();
+            var resultx112331tt1124 = await _defaultTableDbContext.Set<SysTest>().Take(2).Skip(2).ToListAsync();
             var resultx112331tt112 = await _defaultTableDbContext.Set<SysUserMod>().FirstOrDefaultAsync();
+            var resultx112331tt2x1 = await _defaultTableDbContext.Set<SysTest>().OrderBy(o => o.Id).LastOrDefaultAsync();
+            var resultx112331tt2x1x = await _defaultTableDbContext.Set<SysTest>().OrderBy(o => o.Id).SingleOrDefaultAsync();
+            var resultx112331tt2x = await _defaultTableDbContext.Set<SysTest>().OrderBy(o => o.Id).Skip(2).LastOrDefaultAsync();
+            Console.WriteLine("--------------");
+            var resultx112331tt2y = await _defaultTableDbContext.Set<SysTest>().OrderBy(o => o.Id).Skip(2).OrderByDescending(o => o.Id).FirstOrDefaultAsync();
 
             var resultx112331tt2 = await _defaultTableDbContext.Set<SysTest>().FirstOrDefaultAsync(o => o.Id == "2");
             var resultx112331ttaa2 = await _defaultTableDbContext.Set<SysTest>().FirstOrDefaultAsync(o => o.Id == "2");
diff --git a/samples/Sample.SqlServer/Startup.cs b/samples/Sample.SqlServer/Startup.cs
index 7338b8cb..e0f644ff 100644
--- a/samples/Sample.SqlServer/Startup.cs
+++ b/samples/Sample.SqlServer/Startup.cs
@@ -28,13 +28,13 @@ namespace Sample.SqlServer
     public class Startup
     {
 
-        //public static readonly ILoggerFactory efLogger = LoggerFactory.Create(builder =>
-        //{
-        //    builder.AddFilter((category, level) => category == DbLoggerCategory.Database.Command.Name && level == LogLevel.Information).AddConsole();
-        //});
+        public static readonly ILoggerFactory efLogger = LoggerFactory.Create(builder =>
+        {
+            builder.AddFilter((category, level) => category == DbLoggerCategory.Database.Command.Name && level == LogLevel.Information).AddConsole();
+        });
         // This method gets called by the runtime. Use this method to add services to the container.
         // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
-    
+
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddControllers();
@@ -56,8 +56,8 @@ namespace Sample.SqlServer
                     op.MaxQueryConnectionsLimit = 5;
                     op.UseSqlServer(builder =>
                     {
-                        var loggerFactory = ShardingContainer.GetService<ILoggerFactory>();
-                        builder.UseLoggerFactory(loggerFactory).UseUnionAllMerge<DefaultShardingDbContext>();
+                        //var loggerFactory = ShardingContainer.GetService<ILoggerFactory>();
+                        builder.UseLoggerFactory(efLogger).UseUnionAllMerge<DefaultShardingDbContext>();
                     });
                     op.ReplaceTableEnsureManager(sp => new SqlServerTableEnsureManager<DefaultShardingDbContext>());
                     op.AddDefaultDataSource("A",