Difference between revisions of "CREATE VIEW"
From SQLZOO
| Line 10: | Line 10: | ||
<div class='ht'> | <div class='ht'> | ||
<div class=params>schema:scott</div> | <div class=params>schema:scott</div> | ||
| − | <source lang=sql class='tidy'> DROP TABLE games</source> | + | <source lang=sql class='tidy'> DROP TABLE games |
| + | DROP TABLE old_games</source> | ||
<source lang=sql class='setup'> CREATE TABLE games( | <source lang=sql class='setup'> CREATE TABLE games( | ||
yr INTEGER PRIMARY KEY, | yr INTEGER PRIMARY KEY, | ||
Revision as of 11:40, 17 July 2012
CREATE VIEW
The table games shows the year and the city hosting the Olympic Games.
| yr | city |
|---|---|
| 2004 | Athens |
| 2008 | Beijing |
schema:scott
DROP TABLE games DROP TABLE old_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;
See also
