sql基本書き方（添削・見直し）

417 ワード

SELECT * FROM    WHERE    ='    '

INSERT INTO   (  1，   2，。。。) VALUES( 1，  2， 。。。)

UPDATE    SET   1=' 1'，  2=' 3' WHERE   3=' 3'

DELETE FROM    WHERE   1=' 1'

  
SELECT * FROM A 
LEFT JOIN B
ON A.xx=B.xx
WHERE A.xx=''