SQL


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SQL




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3. SQL

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SELECT

SELECT




DISTINCT
ALL DISTINCT

- 2

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4.



- 2
- 3
- 4

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5.
IN
BETWEEN
BETWEEN - 2
LIKE

LIKE - 2
NULL
IS NULL
NOT

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COUNT

DISTINCT
COUNT ,

,
GROUP BY
HAVING
HAVING - 2


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8.




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NULL

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9.
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10.
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,
DISTINCT


, IN
, IN - 2

, IN - 3


HAVING

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Ѩ

Ѩ HAVING
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12. EXISTS
EXISTS?
EXISTS

EXISTS Ѩ
EXISTS
NOT EXISTS
EXISTS

- 2

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13. ANY, ALL SOME
ANY SOME

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

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

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14. UNION

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UNION
UNION