将多行数据合并成一行

WITH tab AS(
select '01' no,'ss' name, 10 jiner,'麦子' you from dual union all
select '02' no,'dd' name, 11 jiner,'萝卜' you from dual union all
select '03' no,'cc' name, 9 jiner,'大豆' you from dual union all
select '01' no,'ss' name, 10 jiner,'白菜' you from dual)
SELECT a.no, a.name, a.jiner, ltrim(MAX(sys_connect_by_path(you, ',')), ',') you
FROM (SELECT row_number() over(PARTITION BY a.no, a.name, a.jiner 
         ORDER BY a.no, a.name, a.jiner) rn,a.*
          FROM tab a) a
START WITH rn = 1
CONNECT BY PRIOR rn = rn - 1 AND
           a.no = PRIOR a.no AND
           a.name = PRIOR a.name AND
           a.jiner = PRIOR a.jiner
GROUP BY a.no, a.name, a.jiner

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