From 253ac748a877819e38c0cf7aa148f87df65db1c9 Mon Sep 17 00:00:00 2001
From: 2881099 <2881099@qq.com>
Date: Sat, 13 Aug 2022 18:19:42 +0800
Subject: [PATCH] update

---
 动态操作.md | 64 ++++++++++++++++++++++++++---------------------------
 1 file changed, 32 insertions(+), 32 deletions(-)

diff --git a/动态操作.md b/动态操作.md
index 656db12..120c90e 100644
--- a/动态操作.md
+++ b/动态操作.md
@@ -1,35 +1,3 @@
-## 动态片段
-
-FreeSql 提供 Where(sql)、GroupBy(sql)、OrderBy(sql)、ToList(sql) 等直接使用 SQL 片段的 API。
-
-**使用这些 API 时请务必注意SQL注入安全问题。**
-
-不建议前端直接 POST SQL 到后端使用它们，而应该在后端做一层映射，例如：
-
-```csharp
-var whereMapping = new Dictionary<string, string>
-{
-    ["where1"] = "a.id > {0}",
-    ["where2"] = "len(a.name) > {0}"
-};
-var orderByMapping = new Dictionary<string, string>
-{
-    ["order1"] = "a.id asc, a.name desc",
-    ["order2"] = "len(a.name) desc"
-};
-
-//假设前端 POST 内容是 postWhere=where1&postWhereValue=100&postOrder=order1
-fsql.Select<Region>()
-    .WhereIf(
-        whereMapping.TryGetValue(postWhere, out var whereSql), 
-        string.Format(whereSql, postWhereValue)
-    )
-    .OrderBy(
-        orderByMapping.TryGetValue(postOrder, out var orderSql), 
-        orderSql
-    )
-```
-
 ## 弱类型 CRUD
 
 ```csharp
@@ -173,4 +141,36 @@ DataTable dt = fsql.Select<Region>()
         "Parent.Code", //导航属性模式
         "b.Id" //多表查询模式
     });
+```
+
+## 动态片段
+
+FreeSql 提供 Where(sql)、GroupBy(sql)、OrderBy(sql)、ToList(sql) 等直接使用 SQL 片段的 API。
+
+**使用这些 API 时请务必注意SQL注入安全问题。**
+
+不建议前端直接 POST SQL 到后端使用它们，而应该在后端做一层映射，例如：
+
+```csharp
+var whereMapping = new Dictionary<string, string>
+{
+    ["where1"] = "a.id > {0}",
+    ["where2"] = "len(a.name) > {0}"
+};
+var orderByMapping = new Dictionary<string, string>
+{
+    ["order1"] = "a.id asc, a.name desc",
+    ["order2"] = "len(a.name) desc"
+};
+
+//假设前端 POST 内容是 postWhere=where1&postWhereValue=100&postOrder=order1
+fsql.Select<Region>()
+    .WhereIf(
+        whereMapping.TryGetValue(postWhere, out var whereSql), 
+        string.Format(whereSql, postWhereValue)
+    )
+    .OrderBy(
+        orderByMapping.TryGetValue(postOrder, out var orderSql), 
+        orderSql
+    )
 ```
\ No newline at end of file