DELETE

From SQLZOO
Jump to navigation Jump to search

DELETE

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

games
yrcity
2000Sydney
2004Athens
2008Beijing
2012London
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 SELECT statement returns results from a table. The DELETE statement can be used to remove rows from a table. In this example we remove the 2000 games from the table:

DELETE FROM scott.games WHERE yr=2000;
SELECT * FROM scott.games;
DELETE FROM games WHERE yr=2000;
SELECT * FROM games;

See also

DataWars, Data Science Practice Projects - LogoDataWars: Practice Data Science/Analysis with +100 Real Life Projects