PostgreSQL Protocol: Server-Side Prepared Statements
Explore how PostgreSQL uses server-side prepared statements to separate query text from parameters, improving security and preventing SQL injection. This lesson helps you understand the extended query protocol, including parse, bind, and execute messages, with practical Python examples using the asyncpg driver to implement safe, efficient database queries.
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It’s possible to send the query string and its arguments separately on the wire by using server-side prepared statements. This is a pretty common way to do it, mostly because PQexecParams isn’t well-known, though it made its debut in PostgreSQL 7.4 in 2003. To this day, a lot of PostgreSQL drivers still don’t expose the PQexecParams facility, which is unfortunate.
Server-side prepared statements can be used in SQL thanks to the prepare and execute commands syntax, as in the ...