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Merge branch 'master' of https://github.com/dotnetcore/FreeSql.wiki

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查询父子关系.md

@@ -82,6 +82,8 @@ Assert.Equal("110101", t1[0].Childs[0].Childs[1].Code);
## 2、AsTreeCte 递归删除 ## 2、AsTreeCte 递归删除
MySql连接字符串需要增加 `Allow User Variables=True`，否则会有`MySqlException Parameter '@cte ids' must be defined`
很常见的无限级分类表功能，删除树节点时，把子节点也处理一下。 很常见的无限级分类表功能，删除树节点时，把子节点也处理一下。
```csharp ```csharp