Oracle PL/SQL/Numeric Math Functions/COSH
Версия от 13:45, 26 мая 2010; (обсуждение)
COSH() function returns the hyperbolic cosine of <numeric expression>.
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Syntax: COSH(<numeric expression>)
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SQL> SELECT COSH(.5) AS RESULT FROM DUAL;
RESULT
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1.12762597
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SQL>
SQL>
COSH: Returns the hyperbolic cosine of a value
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SQL>
SQL> -- create demo table
SQL> create table TestTable(
2 ID VARCHAR2(4 BYTE) NOT NULL,
3 MyName VARCHAR2(10 BYTE),
4 MyDate DATE,
5 MyNumber Number(8,2)
6 )
7 /
Table created.
SQL>
SQL>
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19960711","YYYYMMDD"),12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19970622","YYYYMMDD"),-12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19980513","YYYYMMDD"),22.1);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19990624","YYYYMMDD"),-2.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("20000415","YYYYMMDD"),2.1);
1 row created.
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SQL>
SQL> select * from TestTable
2
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SQL>
SQL> -- COSH: Returns the hyperbolic cosine of a value.
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SQL> SELECT COSH(MyNumber*2*3.1416/360) FROM TestTable;
COSH(MYNUMBER*2*3.1416/360)
---------------------------
1.02245695
1.02245695
1.07531633
1.00068462
1.00067176
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SQL>
SQL> drop table TestTable;
Table dropped.
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COSH(x): Returns the hyperbolic cosine of x
SQL> --COSH(x): Returns the hyperbolic cosine of x.
SQL> select COSH(3.1415926) from dual;
COSH(3.1415926)
---------------
11.5919527
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