Question

这与其他人有类似的问题，但没有人明确解释如何纠正这个问题：

process.py

import sqlite3  # version 2.6.0

connection = sqlite3.connect('./db.sqlite')
cursor = connection.cursor()
count_before = cursor.execute('SELECT COUNT(*) FROM r_data;').fetchall()[0][0]
print('{} rows in {}'.format(count_before, table_name))

query = 'DELETE FROM r_data WHERE pk IN (501, 668);'
print('Deleted ', cursor.execute(query).rowcount, 'rows')

count_after = cursor.execute('SELECT COUNT(*) FROM r_data;').fetchall()[0][0]
print('{} rows in {}'.format(count_after, table_name))
cursor.close()
connection.close()

输出：

$ python process.py 
824 rows
822 rows
$ python process.py 
824 rows
822 rows

我知道SQL查询很好，因为我可以通过其他sqlite“客户端”成功运行它们，例如firefox sqlite manager插件。

Answer 1

是的，需要提交连接：

cursor.close()
connection.commit()   # <<<<< !!
connection.close()

Python SQLite删除行

1 个答案: