mysql 当年所有月份列表

-- 不依赖任何表，只是用mysql自带函数方法
select concat((select year(now())),'-01') as `date`
union select concat((select year(now())),'-02')
union select concat((select year(now())),'-03')
union select concat((select year(now())),'-04')
union select concat((select year(now())),'-05')
union select concat((select year(now())),'-06')
union select concat((select year(now())),'-07')
union select concat((select year(now())),'-08')
union select concat((select year(now())),'-09')
union select concat((select year(now())),'-10')
union select concat((select year(now())),'-11')
union select concat((select year(now())),'-12')