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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def load_keys(database, parameters):
 """Loads keys from database."""

    keys = []
    with database.snapshot() as snapshot:
        results = snapshot.execute_sql(
            'SELECT u.id FROM %s u' % parameters['table'])

    for row in results:
        keys.append(row[0])

    return keys