如何在Netteza中使用'LISTAGG'功能

Question

My data

B_STAFF_CODE         PERIOD_COLL
----------------------------------
1111111               201901
2222222               201901
1111111               201902
3333333               201903
----------------------------------

我试图通过Netteza中的SQL语句使用函数'LISTAGG'，我得到如下错误，

错误：函数'LISTAGG'不是分析聚合，而是使用窗口规范调用

SELECT B_STAFF_CODE,
       LISTAGG(PERIOD_COLL, ' , ') WITHIN GROUP (ORDER BY PERIOD_COLL) as CONCAT_PERIOD
FROM F_STAFF_MASTER
GROUP BY B_STAFF_CODE;

B_STAFF_CODE         CONCAT_PERIOD
----------------------------------
1111111               201901, 201902
2222222               201901
3333333               201903
----------------------------------

Answer 1

你可以使用GROUP_CONCAT（）

SELECT B_STAFF_CODE,
       GROUP_CONCAT(PERIOD_COLL, ' , ') as CONCAT_PERIOD
FROM F_STAFF_MASTER
GROUP BY B_STAFF_CODE