SqlServer,Mysql,Sqlite刪除一個月前數據的寫法

Mysql

delete  from tb_log where createTime  < date_add(curdate(),INTERVAL -1 month)

SqlServer:

delete  from tongbu_log where create_time <= dateadd(month,-1,getdate())

Sqlite刪除30天前的數據

delete  from Tb_log where julianday('now') - julianday(create_time) >= '30';