php?sql语句

[伟洪winni]

我想查出 开始日期（event_start_time）或 结束日期(event_end_time)在 2015-11的所有数据
这个 where 语句要怎么写？

[伟洪winni]

引用 1 楼 xuzuning 的回复:

.... where data_format(event_start_time, '%Y-%m') = '2015-11' or data_format(event_end_time, '%Y-%m') = '2015-11'

data_format does not exist

[xuzuning]

.... where data_format(event_start_time, '%Y-%m') = '2015-11' or data_format(event_end_time, '%Y-%m') = '2015-11'