ssis:oracle多行到一列输出,不带stragg

有多种方法可以执行字符串聚合以生成逗号分隔的列表-请参阅 this link for more details . 根据链接中的示例,尝试:

SELECT x.id,
       LTRIM(MAX(SYS_CONNECT_BY_PATH(x.language,','))
       KEEP (DENSE_RANK LAST ORDER BY curr),',') AS employees
  FROM (SELECT a.id,
               b.language,
               ROW_NUMBER() OVER (PARTITION BY a.id ORDER BY b.language) AS curr,
               ROW_NUMBER() OVER (PARTITION BY a.id ORDER BY b.language) -1 AS prev
          FROM TABLE_1 a
          JOIN TABLE_2 b ON b.id = a.langid) x
GROUP BY x.id
CONNECT BY prev = PRIOR curr AND x.id = PRIOR x.id
START WITH curr = 1;

对于11g,请查看 listagg function

select t1.id, listagg(t2.language, ', ') within group (order by t2.language)
from t1, t2
where t1.langId = t2.id
group by t1.id;