Oracle查表結構、屬主、所有表等語句 select * from dba_tables 查系統中所有表select * from all_tab_columns where table_name = 'TableName' and Owner = 'OwnerName' 查系統中某個具體表結構select * from tab where tabtype = 'TABLE' 查目前使用者下的所有表,tabtype可變select * from user_tables;
癥狀:安裝oracle 10g 的時候 網路檢測沒有通過,沒有處理就繼續安裝了,ip地址也沒有制定,後來給機器修改了IPoracleDBConsole就不能啟動了,系統開機記錄查看:Agent process exited abnormally during initialization。 無法啟動oracleDBConsole的解決方案之一 癥狀:原來正常,後來給機器加了DNS尾碼就不能啟動了,系統啟動時報錯:Agent process exited abnormally
ORA-01034: ORACLE not availablelarry ! 求助 ORA-01034: ORACLE not availableoracle安裝、啟動後用sqlplus "/ as sysdba" 登陸,執行任何select語句都出現錯誤:select * from dictionary*ERROR at line 1:ORA-01034: ORACLE not
如何在Oracle中複製表結構和表資料1. 複製表結構及其資料:create table table_name_new as select * from table_name_old 2. 只複製表結構:create table table_name_new as select * from table_name_old where 1=2;或者:create table table_name_new like table_name_old 3. 只複製表資料:如果兩個表結構一樣:insert
1. 內串連很簡單select A.*, B.* from A,B where A.id = B.idselect A.*, B.* from A inner join B on A.id = B.id以上兩句是完全等價的2. 左外串連select * from emp a left join dept d on a.deptno=d.deptnoselect * from emp a,dept d where a.deptno=d.deptno(+)以上兩句是完全等價的3.
SELECT * FROM CT_CHA_ReadAmmeterEntry AS OF TIMESTAMP TO_TIMESTAMP('2013-02-27 15:17:00','YYYY-MM-DD HH24:MI:SS') where to_char(cfbizdate,'yyyyMMdd')='20130226' and cfaddressno>='01000000'
需求,經過一個操作(審核操作),然後把合格表A中的兩個欄位批量插入到表B中。在插入這兩個欄位的同時,還需要通過一個函數自動產生一個id,還有一個固定值(“ABC”)。實現:--隨機產生10道判斷題插入資料庫insert into exam_topictemp(id,topicId,topictype,projectid)select * from (SELECT newbosid('12345678'),topic_id,topic_type,'projectId' FROM