常用sql集合

1.按照年份月份拆分字段，并统计。

SELECT DATE_FORMAT(creat_time,"%Y年%m月") AS dates,COUNT(*) FROM ssoml.mlcp_node GROUP BY 
 DATE_FORMAT(creat_time,"%Y年%m月")
 ORDER BY DATE_FORMAT(creat_time,"%Y年%m月") DESC ;

如图：