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postgresqlpython-3.xprepared-statementpsycopg

prepared statements using psycopg

I'm a beginner at python. We use this code to execute SQL commands.

cur.execute("INSERT INTO test (num, data) VALUES (%s, %s)", (100, "abcdef"))

I wonder is this prepared statement or just a client side quoting?

Solution

  • No, it does not, not for psycopg2 at least. The "Prepare" in the docs refers to a "PREPARE TRANSACTION" which is entirely different than a prepared statement.

    You can emulate a prepared statement, by overriding the methods or executing extra statements, however. See: An example of psycopg2 cursor supporting prepared statements

    Please see: relevant blog entry for psycopg.

    More information:

    http://www.postgresql.org/docs/9.2/static/sql-prepare.html
    http://www.postgresql.org/docs/current/static/sql-prepare-transaction.html