标签:参数错误 gap character mac os reg _for HERE str to_date
一、环境
mac OS + python3.6 + pymysql
二、执行
1、语句
select count(user_id) from chezhubangapppp.yfq_user where register_dt between ‘2018-11-01‘ and ‘2018-12-01‘;
写成这样直接会报错,说between and之间必须是时间类型
2、修改后
"select count(user_id) from chezhubangapppp.yfq_user where register_dt between str_to_date(‘%s‘, ‘%Y-%m-%d‘) and str_to_date(‘%s‘, ‘%Y-%m-%d‘);" % (‘2018-11-01‘, ‘2018-12-01‘)
报错
ValueError: unsupported format character ‘Y‘ (0x59) at index 98
为啥?因为python执行的sql中存在类似DATE_FORMAT(CREATE_TIME, ‘%Y-%m-%d’) 的写法,与其中%Y与python的参数%s冲突
三、结论
修改后的结果
select count(user_id) from chezhubangapppp.yfq_user where register_dt between str_to_date(‘%s‘, ‘%%Y-%%m-%%d‘) and str_to_date(‘%s‘, ‘%%Y-%%m-%%d‘)" % (‘2018-11-01‘, ‘2018-12-01‘)
标签:参数错误 gap character mac os reg _for HERE str to_date
原文地址:https://www.cnblogs.com/medivhxu/p/10109833.html