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Oracle PL/SQL Tutorial/SQL PLUS Session Environment/recyclebin - История изменений
2026-06-10T07:47:40Z
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в 13:45, 26 мая 2010
2010-05-26T13:45:46Z
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Admin: 1 версия
2010-05-26T10:04:05Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== A dropped table is preserved in the recycle bin until purged.==<br />
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<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL><br />
SQL> create table myTable (col1 number primary key);<br />
Table created.<br />
SQL><br />
SQL> drop table myTable;<br />
Table dropped.<br />
SQL><br />
SQL> select object_name, original_name, type from recyclebin;<br />
no rows selected<br />
SQL><br />
SQL> purge recyclebin;<br />
Recyclebin purged.<br />
SQL><br />
SQL> select object_name, original_name, type from recyclebin;<br />
no rows selected<br />
SQL><br />
SQL><br />
SQL></source><br />
<br />
<br />
<br />
== purge recyclebin==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL> create table history<br />
2 ( empno NUMBER(4)<br />
3 , beginyear NUMBER(4)<br />
4 , begindate DATE<br />
5 , enddate DATE<br />
6 , deptno NUMBER(2)<br />
7 , msal NUMBER(6,2)<br />
8 , comments VARCHAR2(60)<br />
9 ) ;<br />
Table created.<br />
SQL><br />
SQL><br />
SQL><br />
SQL> insert into history values (9,2000,date "2000-01-01",date "2002-01-02",40, 950,"history for 9");<br />
1 row created.<br />
SQL> insert into history values (8,2000,date "2000-01-02", NULL ,20, 800,"");<br />
1 row created.<br />
SQL> insert into history values (7,1988,date "2000-01-06",date "2002-01-07",30,1000,"");<br />
1 row created.<br />
SQL> insert into history values (6,1989,date "2000-01-07",date "2002-01-12",30,1300,"");<br />
1 row created.<br />
SQL> insert into history values (5,1993,date "2000-01-12",date "2002-01-10",30,1500,"history for 5");<br />
1 row created.<br />
SQL> insert into history values (4,1995,date "2000-01-10",date "2002-01-11",30,1700,"");<br />
1 row created.<br />
SQL> insert into history values (3,1999,date "2000-01-11", NULL ,30,1600,"");<br />
1 row created.<br />
SQL> insert into history values (2,1986,date "2000-01-10",date "2002-01-08",20,1000,"history for 2");<br />
1 row created.<br />
SQL> insert into history values (1,1987,date "2000-01-08",date "2002-01-01",30,1000,"history for 1");<br />
1 row created.<br />
SQL> insert into history values (7,1989,date "2000-01-01",date "2002-05-12",30,1150,"history for 7");<br />
1 row created.<br />
SQL><br />
SQL><br />
SQL><br />
SQL><br />
SQL> purge recyclebin;<br />
Recyclebin purged.<br />
SQL><br />
SQL><br />
SQL> select object_name, original_name, droptime<br />
2 from recyclebin;<br />
no rows selected<br />
SQL><br />
SQL> flashback table history to before drop;<br />
flashback table history to before drop<br />
*<br />
ERROR at line 1:<br />
ORA-38305: object not in RECYCLE BIN<br />
<br />
SQL><br />
SQL><br />
SQL> drop table history;<br />
Table dropped.</source></div>
Admin