pranavbhole commented on PR #14943:
URL: https://github.com/apache/druid/pull/14943#issuecomment-1714830654
> LGTM. One question, is there a way say I have a column of encoded strings.
Atm I understand the function works on string values. Not this PR but can we
later try to make it work on a column too ? Will that be useful ? Something
like `SELECT DECODE_BASE64_UTF8("<column>") FROM <table>`. Currently this
throws an error like
>
> ```
> SELECT DECODE_BASE64_UTF8("dim1") FROM foo
>
> Error: RUNTIME_FAILURE (OPERATOR)
> Illegal base64 character 2e
> java.lang.IllegalArgumentException
> ```
>
> So might want to think about a better error message. But need not be done
in context of this PR
It works on the column as well, provided you have encoded base64 string
value stored in column.
If you column value has any other non base64 chars then it will throw above
error.
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