问题
I just started using the Mysql Connector library for Python and I seem to be running into an issue I can't get my head around.
I have Python dynamically generate Insert statements to be executed on MySQl database.
I batch them together in one string and then I execute every n together in the one cusrsor.execute() statement however for some reason when I check the DB and table, the new rows are nowhere to be found.
I tried it with even just two insert statements together and they still didn't get persisted to the DB even though I call execute, call a commit and then close the cursor and connection in that order.
If I have just one insert statement in the execute command and I remove the multi flag then it works fine.
Does anyone know why this could be happening?
Sample code:
from mysql import connector
my_sql_connection = connector.connect(user='user', password='pass',
host='hostname',
database='db')
mysql_cursor = my_sql_connection.cursor()
statement = "Insert into table (col) values (1); Insert into table (col) values (2);"
mysql_cursor.execute(statement, multi=True)
my_sql_connection.commit()
mysql_cursor.close()
my_sql_connection.close()
After this code is called, there are no errors however no new rows show up in the table.
回答1:
You should try using executemany instead of execute with the multi flag, it's generally much simpler to implement.
Also,I would recommend you switch to PyMySQL, it has a very complete documentation and from my experience works much better 'out of the box' than the mysql connector library.
来源：https://stackoverflow.com/questions/33745270/python-mysql-connector-multi-insert-not-working