oracle中行转列LISTAGG()函数详解及应用实例

SELECT
	LISTAGG ( NAME_CHS, ',' ) within GROUP ( ORDER BY ROWNUM ) name 
FROM
	GSPUSER 
WHERE
	ROWNUM <= 10

SELECT
	b.MOMTEAMNAME,
	LISTAGG ( g.NAME_CHS, ',' ) WITHIN GROUP ( ORDER BY b.MOMTEAMNAME ) res
FROM
	DGMOMPTDGMOMGLHQYBZGL b 
	LEFT JOIN DGMOMPTABOUTUSERS u ON b.ID = u.PARENTID 
	LEFT JOIN GSPUSER g ON u.MOMEMPLOYEEID = g.ID 
WHERE
	b.MOMDATASTATE = 0 
	AND u.MOMDATASTATE = 0 
GROUP BY
	b.MOMTEAMNAME

SELECT
    MOMTEAMNAME,RES,COUNT
FROM(	
 SELECT
	b.MOMTEAMNAME,
	LISTAGG ( g.NAME_CHS, ',' ) WITHIN GROUP ( ORDER BY b.MOMTEAMNAME ) over(partition by b.MOMTEAMNAME) res,
	count(g.NAME_CHS) over(partition by b.MOMTEAMNAME) count,
	row_number() over(partition by b.MOMTEAMNAME ORDER BY ROWNUM) rn
FROM
	DGMOMPTDGMOMGLHQYBZGL b 
	LEFT JOIN DGMOMPTABOUTUSERS u ON b.ID = u.PARENTID 
	LEFT JOIN GSPUSER g ON u.MOMEMPLOYEEID = g.ID 
WHERE
	b.MOMDATASTATE = 0 
	AND u.MOMDATASTATE = 0 
) WHERE rn = 1

with temp as(  
select 500 population, '中国' nation ,'江苏' city from dual union all  
select 1500 population, '中国' nation ,'上海' city from dual union all  
select 500 population, '中国' nation ,'北京' city from dual union all  
select 1000 population, '美国' nation ,'纽约' city from dual union all  
select 500 population, '美国' nation ,'波士顿' city from dual union all  
select 500 population, '日本' nation ,'东京' city from dual   
)  
select population,  
nation,  
city,  
listagg(city,',') within GROUP (order by city) over (partition by nation) rank  
from temp复制