I try to define composite index on last_name, first_name on flask-sqlalchemy, the error says NameError: name 'Index' is not defined Code: class Student(mydb.Model): __tablename__ = 'STUDENT' __table_args__ = (Index('SearchNameIndices', "last_name", "first_name"), ) study_no = mydb.Column(mydb.String(20), primary_key = True) first_name = mydb.Column(mydb.String(64)) last_name = mydb.Column(mydb.String(64))
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