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7adc9aa50c
There was a bug that caused aggregates to fail when
used on column-sensitive columns.
For example:
```
SELECT SUM("SomeColumn") FROM ks.table;
```
would fail, with a message saying that there
is no column "somecolumn".
This is because the case-sensitivity got lost on the way.
For non case-sensitive column names we convert them to lowercase,
but for case sensitive names we have to preserve the name
as originally written.
The problem was in `forward_service` - we took a column name
and created a non case-sensitive `column_identifier` out of it.
This converted the name to lowercase, and later such column
couldn't be found.
To fix it, let's make the `column_identifier` case-sensitive.
It will preserve the name, without converting it to lowercase.
Fixes: https://github.com/scylladb/scylladb/issues/14307
Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>
(cherry picked from commit 7fca350075)