Query from different schema

I am using oracle sqldeveloper. I am trying to run a query on a different schema. Whenever I run the following:
Select *
From SchemaA.Users us
Order by US.last_name asc
I get the following error:
US.last_name: invalid identifier.
I would get the same error when I place a where clause on the end as well. I am sure it is an error in syntax. Nonetheless, I am not sure how to correctly write the query. Any help on this topic would be great. Thanks in advance.

Hi,
NewApexCoder wrote:
I am using oracle sqldeveloper. I am trying to run a query on a different schema. Whenever I run the following:
Select *
From SchemaA.Users us
Order by US.last_name asc
I get the following error:
US.last_name: invalid identifier.
I would get the same error when I place a where clause on the end as well. I am sure it is an error in syntax. Nonetheless, I am not sure how to correctly write the query. Any help on this topic would be great. Thanks in advance.
I don't see anything obviously wrong with the syntax, or ianything else in that code. You didn't post CREATE TABLE and INSERT statements for the USERS table, so I can't actually test it, but I can run very similar queries, like this:
SELECT    *
FROM      scott.dept sd
ORDER BY sd.dname ASC
Are you sure there's a column called LAST_NAME in the SCHEMAA.USERS table? If I spell DNAME wrong, then the query above gets the "invalid identifier" error, just like yours.
USERS is an Oracle keyword, so it's not a very good table name. That's almost certainly not what's causing this problem, however.

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2
3 IS
4
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10
11 /
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4
5 END;
6
7 /
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