diff --git a/多表查询.md b/多表查询.md
index 68f3276..f7a3c7e 100644
--- a/多表查询.md
+++ b/多表查询.md
@@ -143,7 +143,7 @@ fsql.Select<Topic>().ToList(a => new {
 //FROM `Topic` a
 ```
 
-> 提示：子查询 string.Join + ToList 适配了 sqlserver/pgsql/oracle/mysql/sqlite/达梦/金仓 [#405](https://github.com/dotnetcore/FreeSql/issues/405)
+> 提示：子查询 string.Join + ToList 适配了 sqlserver/pgsql/oracle/mysql/sqlite/firebird/达梦/金仓 [#405](https://github.com/dotnetcore/FreeSql/issues/405)
 
 ## 8、子表First/Count/Sum/Max/Min/Avg
 ```csharp