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в 13:45, 26 мая 2010
2010-05-26T13:45:46Z
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Admin: 1 версия
2010-05-26T10:08:54Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== ABS(-BS(0) ABS(456) SIGN(-IGN(0) SIGN(456)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL> select abs(-123), abs(0), abs(456)<br />
2 , sign(-123), sign(0), sign(456)<br />
3 from dual;<br />
ABS(-123) ABS(0) ABS(456) SIGN(-123) SIGN(0) SIGN(456)<br />
---------- ---------- ---------- ---------- ---------- ----------<br />
123 0 456 -1 0 1<br />
SQL></source><br />
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== Ordinary Trigonometry Functions==<br />
<br />
<p>SIN returns the sine of a value.</p><br />
<p>COS returns the cosine of a value.</p><br />
<p>TAN returns the tangent of a value.</p><br />
<p>The SIN, COS, and TAN functions take arguments in radians where,</p><br />
<p>radians = (angle*2* 3.1416 / 360)</p><br />
14. 19. SIN<br />
14. 19. 1. <br />
Ordinary Trigonometry Functions<br />
14. 19. 2. <br />
<A href="/Tutorial/Oracle/0280__Numerical-Math-Functions/UsingtheSINfunctiontofindthesineof30degrees.htm">Using the SIN function to find the sine of 30 degrees</a><br />
14. 19. 3. <br />
<A href="/Tutorial/Oracle/0280__Numerical-Math-Functions/SIN0.htm">SIN(0)</a><br />
14. 19. 4. <br />
<A href="/Tutorial/Oracle/0280__Numerical-Math-Functions/selectsin30314159265180.htm">select sin(30*3.14159265/180)</a><br />
14. 19. 5. <br />
<A href="/Tutorial/Oracle/0280__Numerical-Math-Functions/ABS123ABS0ABS456SIGN123SIGN0SIGN456.htm">ABS(-123) ABS(0) ABS(456) SIGN(-123) SIGN(0) SIGN(456)</a><br />
<br />
== select sin(30*3.14159265/180)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL><br />
SQL> select sin(30*3.14159265/180)<br />
2 from dual;<br />
SIN(30*3.14159265/180)<br />
----------------------<br />
.499999999<br />
SQL></source><br />
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<br />
<br />
== SIN(0)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL> select SIN(0) from dual;<br />
SIN(0)<br />
----------<br />
0</source><br />
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<br />
<br />
== Using the SIN function to find the sine of 30 degrees==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
SQL><br />
SQL> -- create demo table<br />
SQL> create table myTable(<br />
2 value1 NUMBER(3),<br />
3 value2 NUMBER(3),<br />
4 value3 NUMBER(3)<br />
5 )<br />
6 /<br />
Table created.<br />
SQL><br />
SQL> -- prepare data<br />
SQL> insert into myTable(value1,value2, value3) values (30,60,90)<br />
2 /<br />
1 row created.<br />
SQL> select * from myTable<br />
2 /<br />
VALUE1 VALUE2 VALUE3<br />
---------- ---------- ----------<br />
30 60 90<br />
SQL><br />
SQL> SELECT SIN(value1*2*3.1416/360)FROM myTable<br />
2 /<br />
SIN(VALUE1*2*3.1416/360)<br />
------------------------<br />
.50000106<br />
SQL><br />
SQL><br />
SQL> -- clean the table<br />
SQL> drop table myTable<br />
2 /<br />
Table dropped.</source></div>
Admin