SQL1


              

SQL1


ANY SOME
IN EXISTS ANY
IN EXISTS ANY - 2
ANY ?
ANY ? - 2
ANY ? - 3
ALL

ANY ALL
ANY, ALL EXIST ?

?
ANY ALL EXISTS NULL
COUNT EXISTS

SQL
14. UNION

?
UNION
UNION

UNION ORDER BY

- 2
- 3

SQL
15. ,
DML

NULL

(INSERT)




UPDATE

NULL-

SQL

16.
INSERT

,
DELETE
DELETE - 2
UPDATE
DML

SQL

17.



:

,


SQL

18.


(NULL)
,






CHECK
,

- 2

SQL
19.




/FOREIGN KEY




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, ?



- 2
- 3
, ͨ
, ͨ - 2

SQL
20. . .
?
CREATE VIEW

CREATE VIEW - 2






?



SQL
21.


__.
?
,
ר
,


SQL
22. ?




GRANT
. .

ALL PUBLIC

WITH GRANT OPTION


?
? - 2
? - 3





SQL
23. SQL




?
? - 2
?
? - 2

SQL ?
:
: - 2

- 2


SQL
24. SQL ?