使用 Python 将嵌套列表插入 mysql 数据库

Question

I want to insert a nested list to mysql database.

Normally, we insert a list data to mysql like this:

list_data = ['Kate', 'apple']
sql = 'INSERT INTO table VALUES ('name', 'likes')'
cursor.execute(sql, list_data)

But if

list_data = ['Kate', ['apple', 'orange', 'banana']]

or

list_data = ['Kate', {'food': 'apple', 'sports': 'running'}]

how can I do? (I mean to save the pyhton list or dict as a string in mysql.)

Answer 1

You can use the json.dumps function in Python, Try below code:

import json
list_data = ['Kate', json.dumps(['apple', 'orange', 'banana'])]
OR, list_data = ['Kate', json.dumps({'food': 'apple', 'sports': 'running'})]
sql = 'INSERT INTO table VALUES ('name', 'likes')'
cursor.execute(sql, list_data)

Flattening your data is also a great idea but that totally depends on your DB design and requirement.

Hope this helps!