Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/16404
Oracle allows it. It sounds like they treat ` (username ||
dbms_random.string('a', 10))` in aggregate and group-by as the same expression.
```SQL
SQL> select (username || dbms_random.string('a', 10)) from all_users group
by (username || dbms_random.string('a', 10));
(USERNAME||DBMS_RANDOM.STRING('A',10))
--------------------------------------------------------------------------------
APEX_040000cklbMYhekl
FLOWS_FILESVmTbIIeiUs
CTXSYSPmgqeRFPry
SYSTEMxQLrzXxHth
XDBRRTfatsLlU
SYSoLDWRKMvlZ
XS$NULLXAaOykZCDH
APEX_PUBLIC_USERvcLswvpbcw
ANONYMOUSgupWiktQKh
OUTLNjLdKOTZoFI
MDSYSxEOhwTwQqa
(USERNAME||DBMS_RANDOM.STRING('A',10))
--------------------------------------------------------------------------------
HRkovpxQztYU
12 rows selected.
```
If I change the order, I got the error:
```SQL
SQL> select (dbms_random.string('a', 10) || username) from all_users group
by (username || dbms_random.string('a', 10))
2 ;
select (dbms_random.string('a', 10) || username) from all_users group by
(username || dbms_random.string('a', 10))
*
ERROR at line 1:
ORA-00979: not a GROUP BY expression
```
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
