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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 createIndices(self):
 """ Index columns that are queried. The expression index can take a long time. """


        sql = '''CREATE INDEX name_index
                 ON Expression (name)'''
        self._cursor.execute(sql)
        self._dbConn.commit()

        sql = '''CREATE INDEX expression_index
                 ON Expression (expression)'''
        self._cursor.execute(sql)
        self._dbConn.commit()