oracle

1.语句

 授予权限

 create user abc identified by abc123;   
 grant connect,resource,dba to abc;
 grant sysdba to abc;   

 insert into t_account_info(mobile_phone,step,identify_code) VALUES('18260087367','1','999');

 drop table sys.T_ACCOUNT_INFO;

 update 表名 set ...

 修改列名语法 ：alter table 表明 rename column rename 老列名 to 新列名