update

多表查询.md

@@ -126,29 +126,22 @@ sql = fsql.Select<Topic, TestTypeInfo, TestTypeParentInfo>()
 
 ## 子表 Exists
 ```csharp
-var sql2222 = select.Where(a => select.Where(b => b.Id == a.Id).Any()).ToList();
+var list2 = select.Where(a => select.Where(b => b.Id == a.Id).Any()).ToList();
 // SELECT a.`Id`, a.`TypeGuid`, a.`Title`, a.`CreateTime` 
 // FROM `xxx` a 
 // WHERE (exists(SELECT 1 
 // FROM `xxx` b 
 // WHERE (b.`Id` = a.`Id`)))
+```
 
-//两级相同的子表查询
-sql2222 = select.Where(a =>
-    select.Where(b => b.Id == a.Id && select.Where(c => c.Id == b.Id).Where(d => d.Id == a.Id).Where(e => e.Id == b.Id)
-    .Offset(a.Id)
-    .Any()
-    ).Any()
-).ToList();
-// SELECT a.`Id`, a.`TypeGuid`, a.`Title`, a.`CreateTime` 
-// FROM `xxx` a 
-// WHERE (exists(SELECT 1 
-// FROM `xxx` b 
-// WHERE (b.`Id` = a.`Id` AND exists(SELECT 1 
-// FROM `xxx` c 
-// WHERE (c.`Id` = b.`Id`) AND (c.`Id` = a.`Id`) AND (c.`Id` = b.`Id`)
-// limit 0,1))
-// limit 0,1))
+## 子表 In
+
+```csharp
+var list2 = select.Where(a => select.ToList(b => b.Id).Contains(a.Id)).ToList();
+// SELECT a.`Id`, a.`Clicks`, a.`TypeGuid`, a.`Title`, a.`CreateTime` 
+// FROM `tb_topic` a 
+// WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title` 
+// 	FROM `tb_topic` b)))
 ```
 
 ## 子表 First/Count/Sum/Max/Min/Avg

更新日志.md

@@ -3,8 +3,11 @@
 
 ## v1.0.0(预告)
 
+- 增加 Where In 表达式解析；[wiki](https://github.com/2881099/FreeSql/wiki/%e5%a4%9a%e8%a1%a8%e6%9f%a5%e8%af%a2#%E5%AD%90%E8%A1%A8-exists)
+- 增加 FreeSqlBuilder.UseConnectionFactory 自定义数据库连接对象的创建方法；
 - 兼容 Vb.Net 表达式解析字符串 = 判断；
 - 优化 GlobalFilter 过滤器表达式 bool 解析；
+- 修复 ISelect.AsTable union all 查询对 count/max/min/avg/sum 的别名 bug；
 
 ## v0.12.20
 

表达式函数.md

@@ -34,6 +34,26 @@ var t2 = fsql.Select<T>()
 //a."Id" = 'b8b366f3-1c03-4547-9c96-d362dd5cae6a' AND a."ct1" = '2019-12-07 23:55:27')
 ```
 
+## 子表 In
+
+```csharp
+var list2 = select.Where(a => select.ToList(b => b.Id).Contains(a.Id)).ToList();
+// SELECT a.`Id`, a.`Clicks`, a.`TypeGuid`, a.`Title`, a.`CreateTime` 
+// FROM `tb_topic` a 
+// WHERE (((cast(a.`Id` as char)) in (SELECT b.`Title` 
+// 	FROM `tb_topic` b)))
+```
+
+## 子表 Exists
+```csharp
+var list2 = select.Where(a => select.Where(b => b.Id == a.Id).Any()).ToList();
+// SELECT a.`Id`, a.`TypeGuid`, a.`Title`, a.`CreateTime` 
+// FROM `xxx` a 
+// WHERE (exists(SELECT 1 
+// FROM `xxx` b 
+// WHERE (b.`Id` = a.`Id`)))
+```
+
 ## 查找今天创建的数据
 
 ```csharp