From ab846658ba379aff5ff2ea85bf228ecb192871b7 Mon Sep 17 00:00:00 2001
From: Alpha2J <3287566354@qq.com>
Date: Mon, 7 May 2018 10:25:45 +0800
Subject: [PATCH] Update SQL.md
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mysql 5.7.18 中, 触发器不允许返回结果集.
---
 notes/SQL.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/notes/SQL.md b/notes/SQL.md
index 2eb67e58..2e99db4e 100644
--- a/notes/SQL.md
+++ b/notes/SQL.md
@@ -603,7 +603,10 @@ INSERT 触发器包含一个名为 NEW 的虚拟表。
 
 ```sql
 CREATE TRIGGER mytrigger AFTER INSERT ON mytable
-FOR EACH ROW SELECT NEW.col;
+FOR EACH ROW SELECT NEW.col into @result;
+
+-- 获取结果
+SELECT @result;
 ```
 
 DELETE 触发器包含一个名为 OLD 的虚拟表，并且是只读的。