How Can I Pass a Python List as Parameters in an SQL Query?

Efficiently Passing Python Lists to SQL Queries: A Solution

Database interactions often require retrieving data based on values from a Python list. This guide demonstrates a secure and efficient method for integrating list elements into SQL queries.

The key is using parameterized queries. These queries employ placeholders in the SQL statement, with list values supplied separately as parameters. This prevents SQL injection vulnerabilities and offers flexibility for various data types.

Here's an example:

placeholder = '?'  # Adjust based on your database's paramstyle
placeholders = ', '.join(placeholder for unused in my_list)
query = 'SELECT name FROM students WHERE id IN (%s)' % placeholders
cursor.execute(query, my_list)

This method ensures data is handled safely and correctly, regardless of whether the list contains integers or strings. Remember to adjust placeholder according to your database's paramstyle.

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