I'm new to Presto and looking to get the same functionality as the group_concat function in MySQL. Are the following two equivalent? If not, any suggestions for how I can recreate the group_concat functionality in Presto?

MySQL:

select

a,

group_concat(b separator ',')

from table

group by a

Presto:

select

a,

array_join(array_agg(b), ',')

from table

group by a

(Found this as a suggested Presto workaround here when searching group_concat functionality.)

解決方案

Try using this in place of group_concat in Presto ::

select

a,

array_join(array_agg(b), ',')

from table

group by a

總結(jié)

以上是生活随笔為你收集整理的presto 连接mysql,Presto等同于MySQL group_concat的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。