From d8680e96da9c51f22fae430fc493f110cb374e5b Mon Sep 17 00:00:00 2001
From: xufenglei <xufenglei>
Date: Fri, 20 Jul 2018 16:23:46 +0800
Subject: [PATCH] 空值处理

---
 src/main/resources/mapper/DemoMapper.xml |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/main/resources/mapper/DemoMapper.xml b/src/main/resources/mapper/DemoMapper.xml
index 8403e41..3ab8c7a 100644
--- a/src/main/resources/mapper/DemoMapper.xml
+++ b/src/main/resources/mapper/DemoMapper.xml
@@ -1,4 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
-<mapper namespace="com.moral.mapper.DemoMapper" >
+<mapper namespace="com.moral.mapper.DemoMapper">
+	<select id="getDatas" resultType="map">
+		SELECT * FROM hangzhou_aqi ORDER BY time DESC LIMIT 7
+	</select>
 </mapper>
\ No newline at end of file

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