diff --git a/多表查询.md b/多表查询.md
index 4acae15..b026a1f 100644
--- a/多表查询.md
+++ b/多表查询.md
@@ -117,9 +117,7 @@ v1.8.0+ string.Join + ToList 实现将子查询的多行结果，拼接为一个
 ```csharp
 fsql.Select<Topic>().ToList(a => new {
   id = a.Id,
-  concat = string.Join(",", 
-    fsql.Select<StringJoin01>()
-      .ToList(b => b.Id))
+  concat = string.Join(",", fsql.Select<StringJoin01>().ToList(b => b.Id))
 });
 //SELECT a.`Id`, (SELECT group_concat(b.`name` separator ',') 
 //    FROM `StringJoin01` b)