diff --git a/FreeSql.DbContext/DbSet/DbSetAsync.cs b/FreeSql.DbContext/DbSet/DbSetAsync.cs
index 42ad2ca8b..31231e5b1 100644
--- a/FreeSql.DbContext/DbSet/DbSetAsync.cs
+++ b/FreeSql.DbContext/DbSet/DbSetAsync.cs
@@ -418,7 +418,16 @@ namespace FreeSql
         async Task<int> DbContextBatchRemoveAsync(EntityState[] dels, CancellationToken cancellationToken)
         {
             if (dels.Any() == false) return 0;
-            var affrows = await this.OrmDelete(dels.Select(a => a.Value)).ExecuteAffrowsAsync(cancellationToken);
+            var affrows = 0;
+            if (_table.Primarys.Length == 1)
+                affrows = await this.OrmDelete(dels.Select(a => a.Value)).ExecuteAffrowsAsync(cancellationToken);
+            else
+            {
+                var takeMax = 300;
+                var execCount = (int)Math.Ceiling(1.0 * dels.Length / takeMax);
+                for (var a = 0; a < execCount; a++)
+                    affrows += await this.OrmDelete(dels.Skip(a * takeMax).Take(Math.Min(takeMax, dels.Length - a * takeMax)).Select(d => d.Value)).ExecuteAffrowsAsync(cancellationToken);
+            }
             _db._entityChangeReport.AddRange(dels.Select(a => new DbContext.EntityChangeReport.ChangeInfo { EntityType = _entityType, Object = a.Value, Type = DbContext.EntityChangeType.Delete }));
             return affrows;
         }
diff --git a/FreeSql.DbContext/DbSet/DbSetSync.cs b/FreeSql.DbContext/DbSet/DbSetSync.cs
index 660acaad8..3cf7b2190 100644
--- a/FreeSql.DbContext/DbSet/DbSetSync.cs
+++ b/FreeSql.DbContext/DbSet/DbSetSync.cs
@@ -450,7 +450,16 @@ namespace FreeSql
         int DbContextBatchRemove(EntityState[] dels)
         {
             if (dels.Any() == false) return 0;
-            var affrows = this.OrmDelete(dels.Select(a => a.Value)).ExecuteAffrows();
+            var affrows = 0;
+            if (_table.Primarys.Length == 1)
+                affrows = this.OrmDelete(dels.Select(a => a.Value)).ExecuteAffrows();
+            else
+            {
+                var takeMax = 300;
+                var execCount = (int)Math.Ceiling(1.0 * dels.Length / takeMax);
+                for (var a = 0; a < execCount; a++)
+                    affrows += this.OrmDelete(dels.Skip(a * takeMax).Take(Math.Min(takeMax, dels.Length - a * takeMax)).Select(d => d.Value)).ExecuteAffrows();
+            }
             _db._entityChangeReport.AddRange(dels.Select(a => new DbContext.EntityChangeReport.ChangeInfo { EntityType = _entityType, Object = a.Value, Type = DbContext.EntityChangeType.Delete }));
             return affrows; //https://github.com/dotnetcore/FreeSql/issues/373
         }
diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index 38ae854fd..7bd2291ce 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -775,5 +775,13 @@
             <param name="that"></param>
             <returns></returns>
         </member>
+        <member name="M:Microsoft.Extensions.DependencyInjection.FreeSqlRepositoryDependencyInjection.AddFreeRepository(Microsoft.Extensions.DependencyInjection.IServiceCollection,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="assemblies"></param>
+            <returns></returns>
+        </member>
     </members>
 </doc>
diff --git a/FreeSql/Internal/CommonExpression.cs b/FreeSql/Internal/CommonExpression.cs
index b05aee762..8181b067e 100644
--- a/FreeSql/Internal/CommonExpression.cs
+++ b/FreeSql/Internal/CommonExpression.cs
@@ -1347,10 +1347,6 @@ namespace FreeSql.Internal
                                                     break;
                                             }
                                             break;
-                                        case "ToOne":
-                                        case "First":
-                                            fsqlSelect0._limit = 1; //#462
-                                            break;
                                     }
                                     if (tsc.dbParams != null) fsqlSelect0._params = tsc.dbParams;
                                     fsqltables = fsqlSelect0._tables;
@@ -1774,6 +1770,13 @@ namespace FreeSql.Internal
                                     case "ToList":
                                     case "ToOne":
                                     case "First":
+                                        switch (exp3.Method.Name)
+                                        {
+                                            case "ToOne":
+                                            case "First":
+                                                fsqlSelect0._limit = 1; //#462
+                                                break;
+                                        }
                                         var tscClone2 = tsc.CloneDisableDiyParse();
                                         var fsqlSelect0p = fsql as Select0Provider;
                                         tscClone2.subSelect001 = fsqlSelect0p; //#405 Oracle within group(order by ..)
diff --git a/FreeSql/Internal/CommonUtils.cs b/FreeSql/Internal/CommonUtils.cs
index 1f960f18e..dd93f7010 100644
--- a/FreeSql/Internal/CommonUtils.cs
+++ b/FreeSql/Internal/CommonUtils.cs
@@ -540,7 +540,6 @@ namespace FreeSql.Internal
             }
             if (dywhere is IEnumerable)
             {
-
                 var sb = new StringBuilder();
                 var ie = dywhere as IEnumerable;
                 var ieSingle = LocalGetSingleElement(ie);