sqlalchemy using an escaped table name yields invalid query

[cleboo]

Hi!

I encountered an issue with the impala-sqlalchemy connector when querying a table with a name that contains a reserved word.

The table is named "reserved.name" and usually can be queried using backticks like so:

SELECT `reserved`.name.column_1, `reserved`.name.column_2  FROM `reserved`.name;

To load the table into sqlalchemy I then use

def impala_conn():
    return connect(
        host='localhost'
    )

engine = create_engine('impala://', creator=impala_conn, echo=True)
metadata = MetaData(engine)
table = Table(`reserved`.name, metadata, autoload=True)

table contains a correct description of the table.

However when trying to query the table with

stmt = select(table).limit(100)
engine.execute(stmt)

the query escapes the already escaped table name again, leading to a query that fails:

SELECT ``reserved`.name`.column_1, ...
       ^
Encountered: EMPTY IDENTIFIER
Expected: ALL, CASE, CAST, DEFAULT, DISTINCT, EXISTS, FALSE, IF, INTERVAL, LEFT, NOT, NULL, REPLACE, RIGHT, STRAIGHT_JOIN, TRUNCATE, TRUE, IDENTIFIER

CAUSED BY: Exception: Syntax error

Is there a way to avoid the additional escaping during the query?