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SQL
ANSI

PL/I



SQL

DATE TIME

FORMAT





INTERSECT MINUS



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SQL
2. SQL. .
SQL?
ANSI?
SQL
SQL

- 2
SQL. .
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SQL
3. SQL

?
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SELECT

SELECT



DISTINCT
ALL DISTINCT

- 2

SQL
4.


- 2
- 3
- 4

SQL
5.
IN
BETWEEN
BETWEEN - 2
LIKE
LIKE - 2
NULL
IS NULL
NOT

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. 6
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COUNT
DISTINCT
COUNT ,

,
GROUP BY
HAVING
HAVING - 2


SQL
8.




- 2




NULL

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8. ,







SQL
9.
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- 2

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10.
?
,
DISTINCT


, IN
, IN - 2
, IN - 3


HAVING

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11. Ѩ
Ѩ ?
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? - 2
? - 3
Ѩ

Ѩ HAVING
Ѩ

SQL
12. EXISTS
EXISTS?
EXISTS
EXISTS Ѩ
EXISTS
NOT EXISTS
EXISTS

- 2

SQL
13. ANY, ALL SOME
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