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		<title>Oracle PL/SQL Tutorial/Insert Update Delete/Delete - История изменений</title>
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		<updated>2026-07-15T15:08:53Z</updated>
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		<id>http://sqle.ru/index.php?title=Oracle_PL/SQL_Tutorial/Insert_Update_Delete/Delete&amp;diff=3687&amp;oldid=prev</id>
		<title> в 13:45, 26 мая 2010</title>
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				<updated>2010-05-26T13:45:46Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;ru&quot;&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Предыдущая&lt;/td&gt;
				&lt;td colspan=&quot;1&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Версия 13:45, 26 мая 2010&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; style=&quot;text-align: center;&quot; lang=&quot;ru&quot;&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(нет различий)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
			</entry>

	<entry>
		<id>http://sqle.ru/index.php?title=Oracle_PL/SQL_Tutorial/Insert_Update_Delete/Delete&amp;diff=3688&amp;oldid=prev</id>
		<title>Admin: 1 версия</title>
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				<updated>2010-05-26T10:07:40Z</updated>
		
		<summary type="html">&lt;p&gt;1 версия&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Новая страница&lt;/b&gt;&lt;/p&gt;&lt;div&gt;== Delete all rows from a table==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;p&amp;gt;Generally, you should specify a WHERE clause that limits the rows that you wish to delete.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;p&amp;gt;If you don&amp;quot;t, all the rows will be deleted.&amp;lt;/p&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- create demo table&lt;br /&gt;
SQL&amp;gt; create table Employee(&lt;br /&gt;
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,&lt;br /&gt;
  3    First_Name         VARCHAR2(10 BYTE),&lt;br /&gt;
  4    Last_Name          VARCHAR2(10 BYTE),&lt;br /&gt;
  5    Start_Date         DATE,&lt;br /&gt;
  6    End_Date           DATE,&lt;br /&gt;
  7    Salary             Number(8,2),&lt;br /&gt;
  8    City               VARCHAR2(10 BYTE),&lt;br /&gt;
  9    Description        VARCHAR2(15 BYTE)&lt;br /&gt;
 10  )&lt;br /&gt;
 11  /&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- prepare data&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2               values (&amp;quot;01&amp;quot;,&amp;quot;Jason&amp;quot;,    &amp;quot;Martin&amp;quot;,  to_date(&amp;quot;19960725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20060725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1234.56, &amp;quot;Toronto&amp;quot;,  &amp;quot;Programmer&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;02&amp;quot;,&amp;quot;Alison&amp;quot;,   &amp;quot;Mathews&amp;quot;, to_date(&amp;quot;19760321&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19860221&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6661.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;03&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Smith&amp;quot;,   to_date(&amp;quot;19781212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19900315&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6544.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;04&amp;quot;,&amp;quot;Celia&amp;quot;,    &amp;quot;Rice&amp;quot;,    to_date(&amp;quot;19821024&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19990421&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2344.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;05&amp;quot;,&amp;quot;Robert&amp;quot;,   &amp;quot;Black&amp;quot;,   to_date(&amp;quot;19840115&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980808&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2334.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;06&amp;quot;,&amp;quot;Linda&amp;quot;,    &amp;quot;Green&amp;quot;,   to_date(&amp;quot;19870730&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19960104&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 4322.78,&amp;quot;New York&amp;quot;,  &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;07&amp;quot;,&amp;quot;David&amp;quot;,    &amp;quot;Larry&amp;quot;,   to_date(&amp;quot;19901231&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 7897.78,&amp;quot;New York&amp;quot;,  &amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;08&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Cat&amp;quot;,     to_date(&amp;quot;19960917&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20020415&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1232.78,&amp;quot;Vancouver&amp;quot;, &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- display data in the table&lt;br /&gt;
SQL&amp;gt; select * from Employee&lt;br /&gt;
  2  /&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester&lt;br /&gt;
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester&lt;br /&gt;
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
8 rows selected.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; DELETE FROM employee;&lt;br /&gt;
8 rows deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; select * from employee;&lt;br /&gt;
no rows selected&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- clean the table&lt;br /&gt;
SQL&amp;gt; drop table Employee&lt;br /&gt;
  2  /&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Delete and subquery==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; create table salary&lt;br /&gt;
  2  ( grade      NUMBER(2)   constraint S_PK primary key&lt;br /&gt;
  3  , lowerlimit NUMBER(6,2)&lt;br /&gt;
  4  , upperlimit NUMBER(6,2)&lt;br /&gt;
  5  , bonus      NUMBER(6,2)&lt;br /&gt;
  6  , constraint S_LO_UP_CHK check (lowerlimit &amp;lt;= upperlimit)&lt;br /&gt;
  7  ) ;&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; insert into salary values (1,  700,1200,   0);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into salary values (2, 1201,1400,  50);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into salary values (3, 1401,2000, 100);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into salary values (4, 2001,3000, 200);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into salary values (5, 3001,9999, 500);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; delete from (select *&lt;br /&gt;
  2               from salary&lt;br /&gt;
  3               where grade = 5);&lt;br /&gt;
1 row deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; drop table salary;&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Delete one row==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; CREATE TABLE project (&lt;br /&gt;
  2    pro_id              NUMBER(4),&lt;br /&gt;
  3    pro_name            VARCHAR2(40),&lt;br /&gt;
  4    budget          NUMBER(9,2),&lt;br /&gt;
  5    CONSTRAINT project_pk   PRIMARY KEY (pro_id)&lt;br /&gt;
  6  );&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; INSERT INTO project(pro_id, pro_name, budget)VALUES (1001, &amp;quot;A&amp;quot;,1912000);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO project(pro_id, pro_name, budget)VALUES (1002, &amp;quot;ERP&amp;quot;,9999999);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO project(pro_id, pro_name, budget)VALUES (1003, &amp;quot;SQL&amp;quot;,897000);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO project(pro_id, pro_name, budget)VALUES (1004, &amp;quot;CRM&amp;quot;,294000);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO project(pro_id, pro_name, budget)VALUES (1005, &amp;quot;VPN&amp;quot;,415000);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; SET ECHO ON&lt;br /&gt;
SQL&amp;gt; DELETE&lt;br /&gt;
  2  FROM project&lt;br /&gt;
  3  WHERE pro_id = 1006&lt;br /&gt;
  4&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; drop table project;&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Delete with where clause==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- create demo table&lt;br /&gt;
SQL&amp;gt; create table Employee(&lt;br /&gt;
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,&lt;br /&gt;
  3    First_Name         VARCHAR2(10 BYTE),&lt;br /&gt;
  4    Last_Name          VARCHAR2(10 BYTE),&lt;br /&gt;
  5    Start_Date         DATE,&lt;br /&gt;
  6    End_Date           DATE,&lt;br /&gt;
  7    Salary             Number(8,2),&lt;br /&gt;
  8    City               VARCHAR2(10 BYTE),&lt;br /&gt;
  9    Description        VARCHAR2(15 BYTE)&lt;br /&gt;
 10  )&lt;br /&gt;
 11  /&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- prepare data&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2               values (&amp;quot;01&amp;quot;,&amp;quot;Jason&amp;quot;,    &amp;quot;Martin&amp;quot;,  to_date(&amp;quot;19960725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20060725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1234.56, &amp;quot;Toronto&amp;quot;,  &amp;quot;Programmer&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;02&amp;quot;,&amp;quot;Alison&amp;quot;,   &amp;quot;Mathews&amp;quot;, to_date(&amp;quot;19760321&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19860221&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6661.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;03&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Smith&amp;quot;,   to_date(&amp;quot;19781212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19900315&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6544.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;04&amp;quot;,&amp;quot;Celia&amp;quot;,    &amp;quot;Rice&amp;quot;,    to_date(&amp;quot;19821024&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19990421&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2344.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;05&amp;quot;,&amp;quot;Robert&amp;quot;,   &amp;quot;Black&amp;quot;,   to_date(&amp;quot;19840115&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980808&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2334.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;06&amp;quot;,&amp;quot;Linda&amp;quot;,    &amp;quot;Green&amp;quot;,   to_date(&amp;quot;19870730&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19960104&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 4322.78,&amp;quot;New York&amp;quot;,  &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;07&amp;quot;,&amp;quot;David&amp;quot;,    &amp;quot;Larry&amp;quot;,   to_date(&amp;quot;19901231&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 7897.78,&amp;quot;New York&amp;quot;,  &amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;08&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Cat&amp;quot;,     to_date(&amp;quot;19960917&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20020415&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1232.78,&amp;quot;Vancouver&amp;quot;, &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- display data in the table&lt;br /&gt;
SQL&amp;gt; select * from Employee&lt;br /&gt;
  2  /&lt;br /&gt;
&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester&lt;br /&gt;
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester&lt;br /&gt;
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
8 rows selected.&lt;br /&gt;
SQL&amp;gt; DELETE FROM employee WHERE start_date &amp;gt; &amp;quot;15-JUL-06&amp;quot;;&lt;br /&gt;
0 rows deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; select * from Employee&lt;br /&gt;
  2  /&lt;br /&gt;
&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester&lt;br /&gt;
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester&lt;br /&gt;
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
8 rows selected.&lt;br /&gt;
SQL&amp;gt; -- clean the table&lt;br /&gt;
SQL&amp;gt; drop table Employee&lt;br /&gt;
  2  /&lt;br /&gt;
Table dropped.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Deleting Row Data==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; CREATE TABLE emp (&lt;br /&gt;
  2     empID INT NOT NULL PRIMARY KEY,&lt;br /&gt;
  3     Name        VARCHAR(50) NOT NULL);&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (1,&amp;quot;Victor&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (2,&amp;quot;Bill&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (3,&amp;quot;Mary&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (4,&amp;quot;Jack&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (5,&amp;quot;Peter&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO emp (empID,Name) VALUES (6,&amp;quot;Tom&amp;quot;);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; DELETE FROM emp WHERE empID &amp;gt; 6;&lt;br /&gt;
0 rows deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; drop table emp;&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Removing Rows Using the DELETE Statement==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- create demo table&lt;br /&gt;
SQL&amp;gt; create table Employee(&lt;br /&gt;
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,&lt;br /&gt;
  3    First_Name         VARCHAR2(10 BYTE),&lt;br /&gt;
  4    Last_Name          VARCHAR2(10 BYTE),&lt;br /&gt;
  5    Start_Date         DATE,&lt;br /&gt;
  6    End_Date           DATE,&lt;br /&gt;
  7    Salary             Number(8,2),&lt;br /&gt;
  8    City               VARCHAR2(10 BYTE),&lt;br /&gt;
  9    Description        VARCHAR2(15 BYTE)&lt;br /&gt;
 10  )&lt;br /&gt;
 11  /&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- prepare data&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2               values (&amp;quot;01&amp;quot;,&amp;quot;Jason&amp;quot;,    &amp;quot;Martin&amp;quot;,  to_date(&amp;quot;19960725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20060725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1234.56, &amp;quot;Toronto&amp;quot;,  &amp;quot;Programmer&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;02&amp;quot;,&amp;quot;Alison&amp;quot;,   &amp;quot;Mathews&amp;quot;, to_date(&amp;quot;19760321&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19860221&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6661.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;03&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Smith&amp;quot;,   to_date(&amp;quot;19781212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19900315&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6544.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;04&amp;quot;,&amp;quot;Celia&amp;quot;,    &amp;quot;Rice&amp;quot;,    to_date(&amp;quot;19821024&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19990421&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2344.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;05&amp;quot;,&amp;quot;Robert&amp;quot;,   &amp;quot;Black&amp;quot;,   to_date(&amp;quot;19840115&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980808&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2334.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;06&amp;quot;,&amp;quot;Linda&amp;quot;,    &amp;quot;Green&amp;quot;,   to_date(&amp;quot;19870730&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19960104&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 4322.78,&amp;quot;New York&amp;quot;,  &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;07&amp;quot;,&amp;quot;David&amp;quot;,    &amp;quot;Larry&amp;quot;,   to_date(&amp;quot;19901231&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 7897.78,&amp;quot;New York&amp;quot;,  &amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;08&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Cat&amp;quot;,     to_date(&amp;quot;19960917&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20020415&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1232.78,&amp;quot;Vancouver&amp;quot;, &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- display data in the table&lt;br /&gt;
SQL&amp;gt; select * from Employee&lt;br /&gt;
  2  /&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester&lt;br /&gt;
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester&lt;br /&gt;
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
8 rows selected.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; DELETE FROM employee&lt;br /&gt;
  2  WHERE id = 2;&lt;br /&gt;
1 row deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- clean the table&lt;br /&gt;
SQL&amp;gt; drop table Employee&lt;br /&gt;
  2  /&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== The DELETE Statements==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;p&amp;gt;The DELETE command provides the means to remove or delete a row from a table.&amp;lt;/p&amp;gt;&lt;br /&gt;
&amp;lt;p&amp;gt;The Syntax for the DELETE Command&amp;lt;/p&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
DELETE from table_name&lt;br /&gt;
WHERE statement&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== To delete the records of emps whose salary is below the average salary in the department (correlated subquery):==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; CREATE TABLE EMP(&lt;br /&gt;
  2      EMPNO NUMBER(4) NOT NULL,&lt;br /&gt;
  3      ENAME VARCHAR2(10),&lt;br /&gt;
  4      JOB VARCHAR2(9),&lt;br /&gt;
  5      MGR NUMBER(4),&lt;br /&gt;
  6      HIREDATE DATE,&lt;br /&gt;
  7      SAL NUMBER(7, 2),&lt;br /&gt;
  8      COMM NUMBER(7, 2),&lt;br /&gt;
  9      DEPTNO NUMBER(2)&lt;br /&gt;
 10  );&lt;br /&gt;
Table created.&lt;br /&gt;
&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(2, &amp;quot;Jack&amp;quot;, &amp;quot;Tester&amp;quot;, 6,TO_DATE(&amp;quot;20-FEB-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 1600, 300, 30);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(3, &amp;quot;Wil&amp;quot;, &amp;quot;Tester&amp;quot;, 6,TO_DATE(&amp;quot;22-FEB-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 1250, 500, 30);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(4, &amp;quot;Jane&amp;quot;, &amp;quot;Designer&amp;quot;, 9,TO_DATE(&amp;quot;2-APR-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 2975, NULL, 20);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(5, &amp;quot;Mary&amp;quot;, &amp;quot;Tester&amp;quot;, 6,TO_DATE(&amp;quot;28-SEP-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 1250, 1400, 30);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(6, &amp;quot;Black&amp;quot;, &amp;quot;Designer&amp;quot;, 9,TO_DATE(&amp;quot;1-MAY-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 2850, NULL, 30);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(7, &amp;quot;Chris&amp;quot;, &amp;quot;Designer&amp;quot;, 9,TO_DATE(&amp;quot;9-JUN-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 2450, NULL, 10);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(8, &amp;quot;Smart&amp;quot;, &amp;quot;Helper&amp;quot;, 4,TO_DATE(&amp;quot;09-DEC-1982&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 3000, NULL, 20);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(9, &amp;quot;Peter&amp;quot;, &amp;quot;Manager&amp;quot;, NULL,TO_DATE(&amp;quot;17-NOV-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 5000, NULL, 10);&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(10, &amp;quot;Take&amp;quot;, &amp;quot;Tester&amp;quot;, 6,TO_DATE(&amp;quot;8-SEP-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 1500, 0, 30);&lt;br /&gt;
1 row created.&lt;br /&gt;
&lt;br /&gt;
SQL&amp;gt; INSERT INTO EMP VALUES(13, &amp;quot;Fake&amp;quot;, &amp;quot;Helper&amp;quot;, 4,TO_DATE(&amp;quot;3-DEC-1981&amp;quot;, &amp;quot;DD-MON-YYYY&amp;quot;), 3000, NULL, 20);&lt;br /&gt;
1 row created.&lt;br /&gt;
&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; DELETE FROM emp e&lt;br /&gt;
  2      WHERE sal &amp;lt; (SELECT AVG(sal) FROM emp&lt;br /&gt;
  3                      WHERE  deptno = e.deptno);&lt;br /&gt;
6 rows deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; drop table emp;&lt;br /&gt;
Table dropped.&amp;lt;/source&amp;gt;&lt;br /&gt;
    &lt;br /&gt;
   &lt;br /&gt;
&lt;br /&gt;
== Writing a DELETE Statement Containing a Subquery==&lt;br /&gt;
&lt;br /&gt;
&amp;lt;p&amp;gt;You use the results returned by the subquery in the WHERE clause of your DELETE statement.&amp;lt;/p&amp;gt;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
   &lt;br /&gt;
  &amp;lt;!-- start source code --&amp;gt;&lt;br /&gt;
   &lt;br /&gt;
    &amp;lt;source lang=&amp;quot;sql&amp;quot;&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- create demo table&lt;br /&gt;
SQL&amp;gt; create table Employee(&lt;br /&gt;
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,&lt;br /&gt;
  3    First_Name         VARCHAR2(10 BYTE),&lt;br /&gt;
  4    Last_Name          VARCHAR2(10 BYTE),&lt;br /&gt;
  5    Start_Date         DATE,&lt;br /&gt;
  6    End_Date           DATE,&lt;br /&gt;
  7    Salary             Number(8,2),&lt;br /&gt;
  8    City               VARCHAR2(10 BYTE),&lt;br /&gt;
  9    Description        VARCHAR2(15 BYTE)&lt;br /&gt;
 10  )&lt;br /&gt;
 11  /&lt;br /&gt;
Table created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- prepare data&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2               values (&amp;quot;01&amp;quot;,&amp;quot;Jason&amp;quot;,    &amp;quot;Martin&amp;quot;,  to_date(&amp;quot;19960725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20060725&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1234.56, &amp;quot;Toronto&amp;quot;,  &amp;quot;Programmer&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;02&amp;quot;,&amp;quot;Alison&amp;quot;,   &amp;quot;Mathews&amp;quot;, to_date(&amp;quot;19760321&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19860221&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6661.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;03&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Smith&amp;quot;,   to_date(&amp;quot;19781212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19900315&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 6544.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;04&amp;quot;,&amp;quot;Celia&amp;quot;,    &amp;quot;Rice&amp;quot;,    to_date(&amp;quot;19821024&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19990421&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2344.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary,  City,       Description)&lt;br /&gt;
  2                values(&amp;quot;05&amp;quot;,&amp;quot;Robert&amp;quot;,   &amp;quot;Black&amp;quot;,   to_date(&amp;quot;19840115&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980808&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 2334.78, &amp;quot;Vancouver&amp;quot;,&amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;06&amp;quot;,&amp;quot;Linda&amp;quot;,    &amp;quot;Green&amp;quot;,   to_date(&amp;quot;19870730&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19960104&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 4322.78,&amp;quot;New York&amp;quot;,  &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;07&amp;quot;,&amp;quot;David&amp;quot;,    &amp;quot;Larry&amp;quot;,   to_date(&amp;quot;19901231&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;19980212&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 7897.78,&amp;quot;New York&amp;quot;,  &amp;quot;Manager&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt; insert into Employee(ID,  First_Name, Last_Name, Start_Date,                     End_Date,                       Salary, City,        Description)&lt;br /&gt;
  2                values(&amp;quot;08&amp;quot;,&amp;quot;James&amp;quot;,    &amp;quot;Cat&amp;quot;,     to_date(&amp;quot;19960917&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), to_date(&amp;quot;20020415&amp;quot;,&amp;quot;YYYYMMDD&amp;quot;), 1232.78,&amp;quot;Vancouver&amp;quot;, &amp;quot;Tester&amp;quot;)&lt;br /&gt;
  3  /&lt;br /&gt;
1 row created.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- display data in the table&lt;br /&gt;
SQL&amp;gt; select * from Employee&lt;br /&gt;
  2  /&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
02   Alison     Mathews    21-MAR-76 21-FEB-86    6661.78 Vancouver  Tester&lt;br /&gt;
03   James      Smith      12-DEC-78 15-MAR-90    6544.78 Vancouver  Tester&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
06   Linda      Green      30-JUL-87 04-JAN-96    4322.78 New York   Tester&lt;br /&gt;
07   David      Larry      31-DEC-90 12-FEB-98    7897.78 New York   Manager&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
8 rows selected.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; DELETE FROM employee&lt;br /&gt;
  2  WHERE salary &amp;gt;&lt;br /&gt;
  3    (SELECT AVG(salary)&lt;br /&gt;
  4     FROM employee);&lt;br /&gt;
4 rows deleted.&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; select * from employee;&lt;br /&gt;
ID   FIRST_NAME LAST_NAME  START_DAT END_DATE      SALARY CITY       DESCRIPTION&lt;br /&gt;
---- ---------- ---------- --------- --------- ---------- ---------- ---------------&lt;br /&gt;
01   Jason      Martin     25-JUL-96 25-JUL-06    1234.56 Toronto    Programmer&lt;br /&gt;
04   Celia      Rice       24-OCT-82 21-APR-99    2344.78 Vancouver  Manager&lt;br /&gt;
05   Robert     Black      15-JAN-84 08-AUG-98    2334.78 Vancouver  Tester&lt;br /&gt;
08   James      Cat        17-SEP-96 15-APR-02    1232.78 Vancouver  Tester&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt;&lt;br /&gt;
SQL&amp;gt; -- clean the table&lt;br /&gt;
SQL&amp;gt; drop table Employee&lt;br /&gt;
  2  /&lt;br /&gt;
Table dropped.&lt;br /&gt;
SQL&amp;gt;&amp;lt;/source&amp;gt;&lt;/div&gt;</summary>
		<author><name>Admin</name></author>	</entry>

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