SQL1

         

SQL1

ANY SOME
IN EXISTS ANY

ANY ?
ALL

ANY ALL
ANY, ALL EXIST ?
?
ANY ALL EXISTS NULL
COUNT EXISTS

14. UNION



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UNION
UNION
UNION ORDER BY


15. ,
DML

NULL
(INSERT)





UPDATE

NULL-
INSERT


,
DELETE
UPDATE
DML
17.




:

,

18.



(NULL)
,





CHECK
,


19.



/FOREIGN KEY





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20. . .
?
CREATE VIEW







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21.



__.
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,
ר
,





GRANT
. .

ALL PUBLIC
WITH GRANT OPTION



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23. SQL





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?
SQL ?
:



24. SQL ?