mysql中将null值转换为0的语句_MySQL
- WBOY原创
- 2016-06-01 13:20:471147浏览
bitsCN.com
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
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