在Hiredmyway中: SELECT if(LENGTH(company_name) > 30, concat(SUBSTRING(company_name, 1, 27), '...'), company_name) AS org_name, count(id) AS num, org_id AS value
mysql datetime查询异常 异常:Value '0000-00-00 00:00:00' can not be represented as java.sql.Timestamp (2011-05-25 11:38:40) 描述:非空无默认值的Datetime类型字段,查询时程序报以下错误: Value '0000-00-00 00:00:00' can not be represented as java.sql.Timestamp 解决方法:数据库连接串添加zeroDateTime
在项目里面,使用mysql datetime desc,看见别人使用UNIX_TIMESTAMP(datetime) desc,就用了 datetime进行比较,使用UNIX_TIMESTAMP()进行转换之后进行比较,心里放心,因为是UNIX 时间戳之间对比大小嘛 SELECT * FROM `table` WHERE UNIX_TIMESTAMP(create_on) <= UNIX_TIMESTAMP('2016-01-26 23:59:59') ORDER BY UNIX_TIMESTA
摘要:关于MySQL 与Django版本匹配相关知识的经验分享. run: (env) E:\PythonPro\PyDjangoProDemo011\xuanyuaniotpro>python manage.py migrate 报错代码提示如下: raise errorclass(errno, errval) django.db.utils.ProgrammingError: (, "You have an error in your SQL syntax; check the man
1.DATE.DATETIME和TIMESTAMP 表达的时间范围 Type Range Remark DATE '1000-01-01' to '9999-12-31' 只有日期部分,没有时间部分 DATETIME '1000-01-01 00:00:00' to '9999-12-31 23:59:59' 时间格式为 YYYY-MM-DD hh:mm:ss,默认精确到秒 TIMESTAMP '1970-01-01 00:00:01' UTC to '2038-01-19 03:14:07'