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Oracle PL/SQL/Numeric Math Functions/EXP - История изменений
2026-05-25T16:54:13Z
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в 13:45, 26 мая 2010
2010-05-26T13:45:19Z
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Admin: 1 версия
2010-05-26T09:55:12Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==EXP(2)==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
SQL> select EXP(2) from dual;<br />
EXP(2)<br />
----------<br />
7.3890561<br />
SQL><br />
SQL><br />
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</source><br />
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==EXP: Returns e raised to a value==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
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SQL><br />
SQL> -- create demo table<br />
SQL> create table TestTable(<br />
2 ID VARCHAR2(4 BYTE) NOT NULL,<br />
3 MyName VARCHAR2(10 BYTE),<br />
4 MyDate DATE,<br />
5 MyNumber Number(8,2)<br />
6 )<br />
7 /<br />
Table created.<br />
SQL><br />
SQL><br />
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19960711","YYYYMMDD"),12.12);<br />
1 row created.<br />
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19970622","YYYYMMDD"),-12.12);<br />
1 row created.<br />
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19980513","YYYYMMDD"),22.1);<br />
1 row created.<br />
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19990624","YYYYMMDD"),-2.12);<br />
1 row created.<br />
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("20000415","YYYYMMDD"),2.1);<br />
1 row created.<br />
SQL><br />
SQL><br />
SQL> select * from TestTable<br />
2<br />
SQL><br />
SQL> --EXP: Returns e raised to a value.<br />
SQL> SELECT EXP(MyNumber) FROM TestTable;<br />
EXP(MYNUMBER)<br />
-------------<br />
183505.515<br />
5.4494E-06<br />
3961941421<br />
.120031629<br />
8.16616991<br />
SQL><br />
SQL> drop table TestTable;<br />
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</source><br />
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==EXP() returns e raised to the nth power (n is the <numeric_expression> value), where e is equal to approximately 2.71828183.==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
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SQL><br />
Syntax:EXP(<numeric expression>)<br />
SQL><br />
SQL><br />
SQL> SELECT<br />
2 EXP(10) exponent from dual;<br />
EXPONENT<br />
----------<br />
22026.4658<br />
SQL><br />
SQL><br />
</source><br />
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==EXP(x):Returns the result of the number e raised to the power x==<br />
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<!-- start source code --><br />
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<source lang="sql"><br />
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SQL> --EXP(x):Returns the result of the number e raised to the power x, <br />
--where e is approximately 2.71828183.<br />
SQL><br />
SQL> select EXP(1) from dual;<br />
EXP(1)<br />
----------<br />
2.71828183<br />
SQL><br />
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</source></div>
Admin