python Django批量创建/更新

Posted 2021-05-09

# took 72 seconds
def auto_transaction():
    for record in Record.objects.all():
        record.name = "String without number"
        record.save()


# took 17 seconds
@transaction.commit_manually
def manual_transaction():
    for record in Record.objects.all():
        record.name = "String without number"
        record.save()
    transaction.commit()


# took 0.03 seconds
def builtin():
    Record.objects.all().update(name="String without number");

# took 37 seconds
def auto_transaction():
    for i in range(10000):
        name="String number %s" %i
        Record.objects.create(name=name)


# took 2.65 seconds
@transaction.commit_manually
def manual_transaction():
    for i in range(10000):
        name="String number %s" %i
        Record.objects.create(name=name)
    transaction.commit()


# took 0.47 seconds
def builtin():
    insert_list = []
    for i in range(10000):
        name="String number %s" %i
        insert_list.append(Record(name=name))
    Record.objects.bulk_create(insert_list)