Question

The problem is with inserting json strings into MySQL database.
In my python program I obtain json as a result of json.dumps(d) where d is a dictionary. Inserting code is:

        query = ("INSERT INTO bm_triesJsons VALUES (%s, %s, %s);"%
                 (article_id, revision_number, jsn))
        print query
        cur.execute(query)

It looks like the problem is quotes, there is no escape symbol in front of quotes.
How can I fix this?

Answer 1

Use the parameterized approach to values when doing a query. The driver will handle escapes:

query = "INSERT INTO bm_triesJsons VALUES (%s, %s, %s);"
cur.execute(query, (article_id, revision_number, jsn))

If you want direct and manual access to the escape function MySQLdb uses, you can do it like this:

c = MySQLdb.connection()
print c.escape_string('{"foo":"bar"}')
# {\"foo\":\"bar\"}