update

贪婪加载.md

@@ -97,6 +97,53 @@ new List<Song>(new[] { song1, song2, song3 }).IncludeMany(g.sqlite, a => a.Tags)
 
 这是一个扩展方法（IncludeMany），方法名与 ISelect.IncludeMany 同名，参数基本一致（除了需要额外传递 IFreeSql 对象参数），功能也一致（包括前面提到的变异）。
 
+## IncludeMany 两种方式对比
+
+方式一（IncludeMany 扩展方法）：
+
+```csharp
+var list111 = g.sqlite.Select<SysModule>()
+    .Page(1, 10)
+    .ToList(a => new { Id = a.Id }) //查询数据 id
+    .Select(a => new SysModule { Id = a.Id }).ToList() //内存操作
+    .IncludeMany(g.sqlite, a => a.Permissions, then => then.Include(a => a.Button));
+```
+
+```sql
+SELECT a."Id" as1 
+FROM "SysModule" a 
+limit 0,10
+
+SELECT a."Id", a."SysModuleId", a."SysModuleButtonId", a."Status", 
+a__Button."Id" as5, a__Button."Name", a__Button."EventName", a__Button."EnCode", a__Button."Icon", a__Button."Sort", a__Button."CreateTime" 
+FROM "SysModulePermission" a 
+LEFT JOIN "SysModuleButton" a__Button ON a__Button."Id" = a."SysModuleButtonId" 
+WHERE ((a."SysModuleId") in ('menu1','menu2'))
+```
+
+---
+
+方式二（直接 IncludeMany + ToList）：
+
+```csharp
+var list222 = g.sqlite.Select<SysModule>()
+    .IncludeMany(m => m.Permissions, then => then.Include(a => a.Button))
+    .Page(1, 10)
+    .ToList();
+```
+
+```sql
+SELECT a."Id", a."ParentId", a."Name", a."Icon", a."UrlAddress", a."IsShow", a."Sort", a."Description", a."CreateTime" 
+FROM "SysModule" a 
+limit 0,10
+
+SELECT a."Id", a."SysModuleId", a."SysModuleButtonId", a."Status", 
+a__Button."Id" as5, a__Button."Name", a__Button."EventName", a__Button."EnCode", a__Button."Icon", a__Button."Sort", a__Button."CreateTime" 
+FROM "SysModulePermission" a 
+LEFT JOIN "SysModuleButton" a__Button ON a__Button."Id" = a."SysModuleButtonId" 
+WHERE ((a."SysModuleId") in ('menu1','menu2'))
+```
+
 ## 参考资料
 
 - [《多表查询》](https://github.com/2881099/FreeSql/wiki/%e5%a4%9a%e8%a1%a8%e6%9f%a5%e8%af%a2)