mysql>selectcurdate();+------------+|curdate()|+------------+|2019-08-04|+------------+1rowinset(0.00sec)mysql>selectdate(now());+-------------+|dat...

 mysql>selectdayofweek(curdate())-1;+------------------------+|dayofweek(curdate())-1|+------------------------+|0|+------------------------+1rowinset(0...

 mysql>SELECTDateDiff('2008-12-29','2008-12-30')ASDiffDate;+----------+|DiffDate|+----------+|-1|+----------+1rowinset(0.00sec)mysql>...

 mysql>selectnow();+---------------------+|now()|+---------------------+|2019-08-0420:03:11|+---------------------+1rowinset(0.00sec)mysql>selectdate...

 当前表mysql>select*fromtable1;+----------+------------+-----+|name_new|transactor|pid|+----------+------------+-----+|1hahha|1xiaohong|1||2hahha|2xiaohong...

 当前表：mysql>select*fromtable1;+----------+------------+-----+|name_new|transactor|pid|+----------+------------+-----+|1hahha|1xiaohong|1||2hahha|2xiaohon...

 查询显示当前的隔离级别mysql>showglobalvariableslike'%isolation%';+-----------------------+-----------------+|Variable_name|Value|+-----------------------+--------...

 1、Mysql让主键归0:TRUNCATEtable1;2、只清空数据表，主键不归0：DELETEFROMtable1;  参考：https://www.csdn.net/gather_2d/MtTaMgxsMjcxMy1ibG9n.html...

 insertintoshare(uid,mapId,isdir,type,pwd,shareTime,overTime,price)values(1,10,0,1,"111111",STR_TO_DATE('2019-08-0304:52:13','%Y-%m-%d%H:%i:%s'),STR_TO_DAT...

 selectcount(*)asddfromusers; ...

以下是UPDATE命令修改MySQL数据表数据的通用SQL语法：UPDATEtable_nameSETfield1=new-value1,field2=new-value2[WHEREClause]以下实例将更新数据表中runoob_id为3的runoob_title字段值：mysql>UPDATErunoob_...

 mysql>selectnow();输出2019-07-2615:43:34 例子mysql>selectnow(),sleep(3),now();+---------------------+----------+---------------------+|now()|sleep(...

 <?phpechomicrotime(true);?><?php$servername="localhost";$username="root";$password="111111";//创建连接$conn=newmysqli($servername,$username,$password...

 sudo/usr/local/mysql/support-files/mysql.serverstopsudo/usr/local/mysql/support-files/mysql.serverstartsudo/usr/local/mysql/support-files/mysql.serverrest...

  打开php.ini配置文件，找到extension=php_pdo.dll和extension=php_pdo_mysql.dll，去掉前面“;”的注释，修改后的两行配置内容如下：extension=php_pdo.dllextension=php_pdo_mysql.d...