How to Safely Insert Variables into SQL Statements Using Python?

Insert variables into the SQL statement in Python

In Python, when using a variable to execute SQL statements, it is important to transmit variables correctly, which can prevent potential injection attacks and ensure correct execution.

In order to insert variables into the SQL statement, use the place occupied symbols in the statement and transmit the variables as the metal group. For example, consider the following Python code:

Among them, VAR1 is an integer, VAR2 and VAR3 are string.

<code>cursor.execute("INSERT INTO table VALUES var1, var2, var3")</code>

To properly transmit variables correctly, please use the EXECUTE method of the tuples containing a position and a variable containing variables:

Please note that the use of position (%s) in the SQL statement (%s) and the brackets around the group group in the Execute method.

<code>cursor.execute("INSERT INTO table VALUES (%s, %s, %s)", (var1, var2, var3))</code>

It is important to avoid using the string format format (%), because it will bypass the correct rotation and reference, so that the query is easily injected with SQL into attack.

The above is the detailed content of How to Safely Insert Variables into SQL Statements Using Python?. For more information, please follow other related articles on the PHP Chinese website!