1 개요

2 SQL Server 2000 버전

3 SQL Server 2005 이상 버전

seq         type         title                                                                             
----------- ------------ --------------------------------------------------------------------------------  
1           business     Straight Talk About Computers 
2           business     The Busy Executive's Database Guide 
3           business     Cooking with Computers: Surreptitious Balance Sheets 
4           business     You Can Combat Computer Stress! 
1           mod_cook     The Gourmet Microwave 
2           mod_cook     Silicon Valley Gastronomic Treats 
1           popular_comp Secrets of Silicon Valley 
2           popular_comp Net Etiquette 
3           popular_comp But Is It User Friendly? 
1           psychology   Emotional Security: A New Algorithm 
2           psychology   Computer Phobic AND Non-Phobic Individuals: Behavior Variations 
3           psychology   Is Anger the Enemy? 
4           psychology   Life Without Fear 
5           psychology   Prolonged Data Deprivation: Four Case Studies 
1           trad_cook    Sushi, Anyone? 
2           trad_cook    Onions, Leeks, and Garlic: Cooking Secrets of the Mediterranean 
3           trad_cook    Fifty Years in Buckingham Palace Kitchens 
1           UNDECIDED    The Psychology of Computer Cooking 

SELECT title, type, IDENTITY(INT, 1, 1) seq INTO #temp 
FROM titles 

SELECT seq%cnt + 1 seq, a.type, a.title 
FROM #temp a  
	INNER JOIN ( 
		SELECT  
			MIN(type) type 
		,	COUNT(*) cnt 
		FROM titles 
		GROUP BY type) b 
ON a.type = b.type 
ORDER BY a.type, seq%cnt + 1 

DROP TABLE #temp 

--임시테이블은 순번을 만들기 위해서 쓴 것이다.. 
--역시 오라클의 rownum이 없는 것이 참 아쉽다. 임시테이블을 만들지 않고서도 순번을 만들 수는 있으나 
--순번을 매기는 것은 임시테이블을 사용하는 것이 부하가 더 적다. 다음의 쿼리와 I/O를 비교해 보면 알 것이다. 
--2005버전은 Row_Number()함수를 이용하면 된다. 

SELECT COUNT(*) seq, a.title_id, a.type 
FROM titles a INNER JOIN titles b 
ON a.type = b.type  
AND a.title_id >= b.title_id 
GROUP BY a.title_id, a.type