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SELECT 문의 논리적 처리 순서
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https://technet.microsoft.com/ko-kr/library/ms189499(v=sql.110).aspx
1. FROM
2. ON
3. JOIN
4. WHERE
5. GROUP BY
6. WITH CUBE 또는 WITH ROLLUP
7. HAVING
8. SELECT
9. DISTINCT
10. ORDER BY
11. TOP