標籤: 這個功能是在自己誤操作,將某些資料更改錯了,你想恢複更改錯之前的資料,這個時候你可以使用這種方式不過建議要小心更改資料,如果實在有必要去更新,請先備份資料表,不到萬不得以才可以這麼做。 SELECT * FROM Aselect * from a as of timestamp to_timestamp(‘2016-6-22 16:35:00‘,‘yyyy-m
標籤:關於oracle with as用法–針對一個別名with tmp as (select * from tb_name)–針對多個別名with tmp as (select * from tb_name), tmp2 as (select * from tb_name2), tmp3 as (select * from tb_name3), …1234567
標籤:1.oracle安裝 參考http://wenku.baidu.com/view/d01ffd43336c1eb91a375d68.html,這裡不再贅述2.命令列sqlplus串連oracle (1)檢查監聽狀態 C:\>lsnrctl status LSNRCTL for 32-bit Windows: Version 9.2.0.1.0 -
標籤:--建立新增本機資料庫的預存程序create or replaceprocedure pro_electric_record as begin insert into electric_meter_record(id,basestation_id,name,meter_number,createtime) select sys_guid(),substr(s.sname,0,36),s.sname,s.svalue,sysdate from rtdbvs s where s.
標籤:安裝11.2.0.4,報錯: [FATAL] [INS-30131] Initial setup required for the execution of installer validations failed. CAUSE: Failed to access the temporary location. ACTION: Ensure that the current user has required
標籤:oracle sql 無密碼登入:sqlplus / as sysdba查看當前的所有資料庫:select name from v$database;查看當前資料庫連接使用者:show user查看目前使用者所有表:select table_name from all_tables;查看錶結構:desc 表名建立資料庫使用者:create user 使用者名稱 indentified by
標籤:----------------1.資料庫更新操作-----------------------------select * from tab;--查詢表drop table siebel_user;--刪除表--copy一份表結構create table myemp as select * from emp;select * from myemp;--插入記錄insert into myemp(empno,ename,job,hiredate,sal,comm,deptno)