Difference between revisions of "CREATE VIEW"
|(2 intermediate revisions by the same user not shown)|
Latest revision as of 08:35, 18 December 2012
games shows the year and the city hosting the Olympic Games.
DROP TABLE games; DROP TABLE old_games; DROP TABLE og
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 og AS SELECT yr,city FROM scott.games WHERE yr<2006; SELECT * FROM og;
CREATE VIEW og AS SELECT yr,city FROM games WHERE yr<2006; SELECT * FROM og;