From c2950b4ed1b2b2dfae59508152bc01e9424c41b9 Mon Sep 17 00:00:00 2001
From: hzy <1396510655@qq.com>
Date: Wed, 4 Nov 2020 00:15:07 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E6=96=B0=E7=9A=84=E5=A4=9A?=
 =?UTF-8?q?=E8=A1=A8=E6=9F=A5=E8=AF=A2=E8=AF=AD=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 多表查询.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/多表查询.md b/多表查询.md
index f7a3c7e..fac0108 100644
--- a/多表查询.md
+++ b/多表查询.md
@@ -57,6 +57,14 @@ fsql.Select<Topic>().From<Category, CategoryType>((s, b, c) => s
   .LeftJoin(a => b.ParentId == c.Id))
   .Where((a,b,c) => c.Id > 0)
   .ToList((a,b,c) => new { a,b,c });
+
+//减少定义 a,b,c 写法
+fsql.Select<Topic, Category, CategoryType>()
+  .LeftJoin(w => w.t1.CategoryId == w.t2.Id)
+  .LeftJoin(w => w.t2.ParentId == w.t3.Id)
+  .Where(w => w.t3.Id > 0)
+  .ToList(w => new { w.t1,w.t2,w.t3 });
+
 //SELECT ...
 //FROM `Topic` a
 //LEFT JOIN `Category` b ON a.`CategoryId` = b.`Id`