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The table
games
shows the year and the city hosting the Olympic Games.
games
yr
city
2000
Sydney
2004
Athens
2008
Beijing
2012
London
The UPDATE statement can be used to change a values in rows that already exists.
In this example we move the 2012 games from London to Paris.
UPDATE games SET city='Paris' WHERE yr = 2012; SELECT * FROM games;
DROP TABLE games
CREATE TABLE games(yr INT, city VARCHAR(20)); INSERT INTO games(city,yr) VALUES ('Sydney',2000); INSERT INTO games(city,yr) VALUES ('Athens',2004); INSERT INTO games(city,yr) VALUES ('Beijing',2008); INSERT INTO games(city,yr) VALUES ('London',2012);
UPDATE games SET city='Paris' WHERE yr = 2012; SELECT * FROM games;
Results
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INSERT ... SELECT