I want to use prepared statements to insert data into a MySQL DB (version 5.7) using python, but I keep getting a NotImplementedError. I'm following the documentation here: https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursorprepared.html
Using Python 2.7 and version 8.0.11 of mysql-connector-python library:
pip show mysql-connector-python
---
Metadata-Version: 2.1
Name: mysql-connector-python
Version: 8.0.11
Summary: MySQL driver written in Python
Home-page: http://dev.mysql.com/doc/connector-python/en/index.html
This is a cleaned version (no specific hostname, username, password, columns, or tables) of the python script I'm running:
import mysql.connector
from mysql.connector.cursor import MySQLCursorPrepared
connection = mysql.connector.connect(user=username, password=password,
host='sql_server_host',
database='dbname')
print('Connected! getting cursor')
cursor = connection.cursor(cursor_class=MySQLCursorPrepared)
select = "SELECT * FROM table_name WHERE column1 = ?"
param = 'param1'
print('Executing statement')
cursor.execute(select, (param,))
rows = cursor.fetchall()
for row in rows:
value = row.column1
print('value: '+ value)
I get this error when I run this:
Traceback (most recent call last):
File "test.py", line 18, in <module>
cursor.execute(select, (param,))
File "/home/user/.local/lib/python2.7/site-packages/mysql/connector/cursor.py", line 1186, in execute
self._prepared = self._connection.cmd_stmt_prepare(operation)
File "/home/user/.local/lib/python2.7/site-packages/mysql/connector/abstracts.py", line 969, in cmd_stmt_prepare
raise NotImplementedError
NotImplementedError
CEXT will be enabled by default if you have it , and prepared statements are not supported in CEXT at the time of writing .
You can disable the use of CEXT when you connect by adding the keyword argument use_pure=True
as follows:
connection = mysql.connector.connect(user=username, password=password,
host='sql_server_host',
database='dbname',
use_pure=True)
Support for prepared statements in CEXT will be included in the upcoming mysql-connector-python
8.0.17 release (according to the MySQL bug report ). So once that is available, upgrade to at least 8.0.17 to solve this without needing use_pure=True
.
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