table userinfopay
user_ id start_time end_time pay
1 2014 2015 5000
1 2016 2018 8000
2 2014 2015 4500
2 2016 2017 7000
2 2018 2020 15000
SQL:
select user_id, wmsys.wm_concat(start_time || '--' || end_time ||'績效獎金爲:' || pay) as userinfo from userinfopay
group by user_id order by start_time asc ;
RESULT:
user_id userinfo
1 2014--2015績效獎金爲:5000,2016--2018績效獎金爲:8000
2 2014--2015績效獎金爲:4500,2016--2017績效獎金爲:7000,2018--2020績效獎金爲:15000