Home >Database >Mysql Tutorial >mysql中将null值转换为0的语句
mysql中将null值转换为0的语句
- WBOYOriginal
- 2016-06-07 18:03:231728browse
mysql中将null值转换为0的语句，在mysql数据库开发中，如果后期添加了字段那么这些值为空值null，我们在使用者需要将null转换为0方便后期的控制就需要下面的代码了。
代码如下:
SELECT
IF(AVG(cai.conversionsRate) IS NULL,0,AVG(cai.conversionsRate))
AS conversionsRate
FROM campaign_info cai
WHERE insertTime BETWEEN '2011-02-01' AND '2011-02-04' AND googleCampaignId=23331401
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：MySQL数据库管理常用命令小结Next article：navicat 8 创建数据库与创建用户分配权限图文方法