Hi vtygoss,
If the length of names is fixed, please try this 'select id,
concat_ws(',',names[1],names[2],names[3]) from test', and note begin with 1
instead of 0.
Else maybe you need to define a custom UDF which receives two arguments,
first is string as separator, second is a string array as conte
Hi,
I have below use case
I want concat an array using comma separator, but got exception “Cannot
apply 'CONCAT_WS' to arguments of type 'CONCAT_WS(,
)'. Supported form(s): 'CONCAT_WS()’”。
How to concat an array in flink sql? please help to offer some advices.
Regards
```
[test case
