Difference between revisions of "COS"

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Line 19: Line 19:
 
<source lang=sql class='tidy'> DROP TABLE angle</source>
 
<source lang=sql class='tidy'> DROP TABLE angle</source>
 
<source lang=sql class='setup'> CREATE TABLE angle(
 
<source lang=sql class='setup'> CREATE TABLE angle(
   type VARCHAR(10),
+
   func VARCHAR(10),
 
   angle INTEGER
 
   angle INTEGER
 
   id INTEGER
 
   id INTEGER
Line 43: Line 43:
 
SELECT id
 
SELECT id
 
  FROM angle
 
  FROM angle
WHERE type = 'COS'
+
WHERE func = 'COS'
 
</source>
 
</source>
 
</div>
 
</div>

Revision as of 10:31, 16 July 2012

Compatibility
COS(a)
EngineOKAlternative
ingresYes
mysqlYes
oracleYes
postgresYes
sqlserverYes

COS

COS(f) returns the cosine of f where f is in radians.

  COS(3.14159/3) -> 0.5 
schema:scott
 DROP TABLE angle
 CREATE TABLE angle(
  func VARCHAR(10),
  angle INTEGER
  id INTEGER
INSERT INTO angle VALUES (COS,0,1);
INSERT INTO angle VALUES (COS,45,1.732051/2);
INSERT INTO angle VALUES (COS,45,1/1.41421);
INSERT INTO angle VALUES (COS,60,1/2);
INSERT INTO angle VALUES (COS,90,NULL);
INSERT INTO angle VALUES (SIN,0,0);
INSERT INTO angle VALUES (SIN,30,1/2);
INSERT INTO angle VALUES (SIN,45,1/1.41421);
INSERT INTO angle VALUES (SIN,60,1.732051/2);
INSERT INTO angle VALUES (SIN,90,1);
INSERT INTO angle VALUES (TAN,0,0);
INSERT INTO angle VALUES (TAN,30,1/1.732051);
INSERT INTO angle VALUES (TAN,45,1);
INSERT INTO angle VALUES (TAN,60,1.732051);
INSERT INTO angle VALUES (TAN,90,1/0);

In this example you return the cosine of each of the angles.

SELECT id
 FROM angle
WHERE func = 'COS'

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