From f9f45df2692c8b19b8fe720964283956b742008a Mon Sep 17 00:00:00 2001
From: injetlee <liyingjie26@hotmail.com>
Date: Fri, 8 Mar 2019 09:44:05 +0800
Subject: [PATCH] sql

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index d5510a22..ecff2133 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@
 - [1 小时 SQL 极速入门（二）](https://mp.weixin.qq.com/s/D-CEtGYomne5kV_Ji4lodA)
 - [1 小时 SQL 极速入门（三）](https://mp.weixin.qq.com/s/7aJqrhCNcvnt2gO3p5P50Q)
 - [SQL 高级查询——（层次化查询，递归）](https://mp.weixin.qq.com/s/R9Yldd-5AK4ObRA9Lfbz-Q)
+- [GROUP BY高级查询,ROLLUP，CUBE，GROUPPING详解](https://mp.weixin.qq.com/s/_OK6dtHGhp7ukC2pe1ginQ)
 
 ## 其他