Difference between revisions of "CREATE VIEW"

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SELECT * FROM old_games;
 
SELECT * FROM old_games;
 
</source>  
 
</source>  
<source>
+
<source lang='sql' class='def'>
 
CREATE VIEW old_games AS
 
CREATE VIEW old_games AS
 
   SELECT yr,city FROM games
 
   SELECT yr,city FROM games

Revision as of 11:39, 17 July 2012

CREATE VIEW

The table games shows the year and the city hosting the Olympic Games.

games
yrcity
2004Athens
2008Beijing
schema:scott
 DROP TABLE games
 CREATE TABLE games(
  yr INTEGER PRIMARY KEY,
  city VARCHAR(20));
INSERT INTO games VALUES (2000,'Sydney');
INSERT INTO games VALUES (2004,'Athens');
INSERT INTO games VALUES (2008,'Beijing');
INSERT INTO games VALUES (2012,'London');

The CREATE VIEW names a SELECT query. That query may be used as if it were a table in many contexts. In this example the VIEW old_games shows those games before 2006.

CREATE VIEW old_games AS
  SELECT yr,city FROM scott.games
   WHERE yr<2006;
SELECT * FROM old_games;
CREATE VIEW old_games AS
  SELECT yr,city FROM games
   WHERE yr<2006;
SELECT * FROM old_games;

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