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鎺у埗瀹㈡埛绔簲鐢ㄧ▼搴忓鍚屼竴緇勬暟鎹簱鐨勮闂潈闄愩?br />
闇姹傦細(xì)
涓氬姟鏁版嵁鏄瓨鍌ㄥ湪鏁版嵁搴撲腑涓涓猄COTT甯愭埛涓嬬殑涓涓〃EMP銆?br />
瑕佹眰璁捐涓縐嶆柟娉曪紝瀹㈡埛绔湪鐧婚檰鍒版暟鎹簱鐨勬椂鍊欙紝闄や簡(jiǎn)鎻愪緵甯愭埛鍚嶄互鍙?qiáng)鍙ｄ护涔嬪锛寴q樿鎻愪緵涓浜涘叾浠栫殑涓浜涗俊鎭傜郴緇熷彲浠ユ牴鎹繖浜涗俊鎭紝鍐沖畾榪欎釜瀹㈡埛绔兘鐪嬪埌鐨凟MP琛ㄤ腑鐨勭壒瀹氶儴闂ㄥ伐浣滅殑鑱屽憳銆?br />
鏂瑰紡錛?br />
棣栧厛鍒嗘瀽榪欎釜闇姹傦紝綆鍖栬繖涓渶姹?br />
鍒╃敤宸茬粡瀛︿範(fàn)鍒拌В鍐沖浣曡涓涓笎鎴峰彧鐪嬪埌涓涓〃涓竴閮ㄥ垎琛岋紝鑰屽叾浠栭儴鍒嗙湅涓嶅埌銆傝繖涓椂鍊欒鐢ㄥ埌瑙嗗浘錛屽涓笎鎴峰拰琛ㄤ笂鐨勬巿鏉冧笁涓唴瀹廣?br />涔嬪悗錛屽垎鏋愯繖涓В鍐蟲(chóng)柟娉曠殑涓嶈凍銆?br />
鐒跺悗榪涗竴姝ユ弧瓚抽渶姹傦紝濡備綍璁╂墍鏈夌敤鎴烽兘鐧婚檰鍒板悓涓涓笎鎴蜂笂錛岀劧鍚庤繕鑳界湅鍒癝COTT甯愭埛涓婨MP琛ㄧ殑涓嶅悓琛岀殑鏁版嵁銆傝繖涓椂鍊欏彲浠ュ埄鐢ㄧ幇鏈夌殑鍏朵粬鐭ヨ瘑錛屽瑙掕壊鐨勭敓鏁堝け鏁堢瓑銆?br />
鎺ヤ笅鏉ワ紝榪涗竴姝ユ彁楂樿姹傦紝瑕佹眰鎵鏈夊鎴風(fēng)閮界櫥闄嗗埌鍚屼竴涓笎鎴蜂笂錛岃屼笖璁塊棶鍚屼竴涓鍥撅紝浣嗚繖涓鍥懼彲浠ユ牴鎹鎴風(fēng)鐧婚檰鏃舵彁渚涚殑淇℃伅錛屽喅瀹氬綋鍓嶄細(xì)璇濆彲浠ユ煡鐪嬬殑鏁版嵁銆?br />
鏈鍚庡啀璁ㄨ灝嗚繖涓緥瀛愭斁澶у埌鍏ㄤ綋涓氬姟鏁版嵁鐨勬柟娉曪紝浠ュ強(qiáng)搴旂敤Oracle鎻愪緵鐨勫叾浠栧姛鑳斤紙濡俈PD錛孡avel Security絳夛級(jí)錛岃繘琛屽叾浠栨敼榪涚殑鍙兘銆?br />
鐩殑錛?/strong>緇煎悎鍒╃敤Oracle鏉冮檺綆＄悊錛屽笎鎴風(fēng)鐞嗭紝瑙嗗浘錛屼復(fù)鏃惰〃錛岃繃紼?鍑芥暟鐨勫垱寤虹瓑鎶鏈紝瑙ｅ喅璁塊棶鎺у埗闂銆?br />
鐩稿叧鐭ヨ瘑鐞嗚В絎旇錛?br />
涓存椂琛細(xì)
create global temporary table table_name(
聽(tīng) username varchar2(10)
聽(tīng) ......
);
瀹㈡埛绔闂湇鍔″櫒绔椂錛屾湇鍔″櫒绔細(xì)鑷姩緇欐瘡涓鎴風(fēng)鍒嗛厤涓涓猻etion,鐢ㄤ互鍖哄埆涓嶇敤鐨勫鎴風(fēng)錛岄亾鐞嗗氨璞¤繖涓牱瀛愶紝涓存椂琛ㄧ殑鐢ㄥ灝卞湪姝わ紝灝辮薄瀹冧細(xì)鑷姩璁劇疆涓嶅悓鐨勫鎴風(fēng)鐨勬潈闄愪竴鏍鳳紝姣斿錛?br />A鍦ㄤ富鏈轟笂寤虹珛涓涓復(fù)鏃惰〃TEMP錛孊鍙互璁塊棶鍒拌繖涓〃錛孉鍦═EMP涓婃彃鍏ユ暟鎹產(chǎn)錛屽浜庤繖涓暟鎹產(chǎn)錛孉鍙互SELECT鍒幫紝浣嗘槸B鍗翠笉鑳姐傚悓鏍鳳紝B涔熷湪榪欎釜琛ㄤ笂鎻掑叆涓涓暟鎹産錛屽浜庤繖涓暟鎹産錛孊鍙互SELECT鍒幫紝鑰孉鍗翠笉鑳?
PS錛氭牴鎹繖涓煡璇嗭紝鎴戝緩绔嬩竴涓復(fù)鏃惰〃錛岃緭鍏ヤ竴浜涗俊鎭紝鏍規(guī)嵁榪欎簺淇℃伅鐨勪笉鍚岋紝鎴戞墍寤虹珛鐨勮鍥懼氨涓嶅悓錛岃繖鏍峰氨鍙互瀹屾垚鏈鍏抽敭閮ㄥ垎銆?br />
瑙嗗浘
聽(tīng)create view view_name as select * from table_name where ...
瑙嗗浘鏄緩绔嬪湪琛ㄧ殑鍩虹涓婄殑錛屽畠鍙槸瀹屾垚琛ㄤ腑涓浜涙暟鎹殑闆嗕綋鐨勪綋鐜?瀵逛簬琛ㄧ殑鏈韓騫朵笉鍋氫換浣曚慨鏀廣傛瘮濡傦細(xì)
鎴戞湁涓や釜琛細(xì)
create table talbe_person(id number,name varchar(20));
insert into table_person values(...,...);
create table table_name (name,varchar(20));
insert into table_name values(...);
鐜板湪鎴戞兂鏌ョ湅table_person涓悕瀛楃鍚坱able_name閲岀殑鍚嶅瓧鐨勪漢鐨勭浉鍏充俊鎭紝鎴戝彲浠ヤ互瑙嗗浘鐨勬柟寮忓疄鐜幫細(xì)
create view view_person as select * from table_person where name in(select * from table_name);
鍏蜂綋鎿嶄綔錛?br />
鐜扮郴緇熷凡緇忓瓨鍦ㄨ〃EMP銆傦紙鍏朵腑鏈塭mpno瀛楁錛?br />
--寤虹珛鏉冮檺鏁版嵁琛紝鐢ㄦ潵瀛樺偍瀵規(guī)瘡涓鎴風(fēng)鍒嗛厤鐨勪笉鍚屾潈闄?br />create table test_privileges (
聽(tīng) id聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng)聽(tīng) number(4),
聽(tīng) username varchar2(10),
聽(tīng) empno聽(tīng)聽(tīng)聽(tīng) number(4)
);
--寤虹珛鑷搴忓垪
create sequence seq_test_id start with 1 increment by 1;
--鎻掑叆鏁版嵁錛屾瘡涓琛岄兘鏈変竴涓猽sername瀛楁錛岀敤鏉ュ尯鍒笉鍚岀殑瀹㈡埛绔?.
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'HR',7369);
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'HR',7499);
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'TEST03',7521);
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'TEST05',7566);
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'TEST05',7900);
insert into test_privileges (id,username,empno)
values (seq_test_id.nextval,'TEST05',7902);
commit;
--寤虹珛涓存椂琛紝鐢ㄦ潵瀛樺偍鐢ㄦ埛鍚嶏紝鐢ㄦ潵鍖哄埆涓嶅悓鐨勫鎴風(fēng)
create global temporary table t_test_info(
聽(tīng) username varchar2(10)
);
--榪欓噷鏄叧閿紝寤虹珛瑙嗗浘銆?br />create view v_emp as
聽(tīng) select * from emp
聽(tīng) where empno in
聽(tīng) (select empno
聽(tīng)聽(tīng) from test_privileges s,t_test_info d
聽(tīng)聽(tīng) where s.username = d.username);
--榪欐牱鎴戞瘡杈撳叆涓嶅悓鐨勭敤鎴峰悕錛屼箣鍚?br />insert into t_test_info values('HR');
--鎵鐪嬪埌鐨勫唴瀹逛篃灝變笉鍚屼簡(jiǎn)
select * from v_emp;
insert into t_test_info values('TEST05');
聽(tīng)select * from v_emp;
insert into t_test_info values('TEST03');
select * from v_emp;
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