prepared-statement

Why does Python's sqlite3 module not respect the order of positional parameters? Question: Recently I ran across the following peculiar behavior, that can be explained by the following code sample: import sqlite3, platform insert = (10, "today") db = sqlite3.connect(":memory:") db.execute("CREATE TABLE t (number, string)") db.execute("INSERT INTO t (string, number) VALUES ($2, $1)", insert) select …

How to pass variable values dynamically in pandas sql query Question: How to pass variable parameters dynamically order = 10100 status = ‘Shipped’ df1 = pd.read_sql_query(“SELECT * from orders where orderNumber =””” + str(10100) + “”” and status = “”” + ‘status’ +””” order by orderNumber “””,cnx) TypeError: must be str, not int getting above …

IN clause for Oracle Prepared Statement in Python cx_Oracle Question: I’d like to use the IN clause with a prepared Oracle statement using cx_Oracle in Python. E.g. query – select name from employee where id in (‘101’, ‘102’, ‘103’) On python side, I have a list [101, 102, 103] which I converted to a string …

Confusion between prepared statement and parameterized query in Python Question: As far as I understand, prepared statements are (mainly) a database feature that allows you to separate parameters from the code that uses such parameters. Example: PREPARE fooplan (int, text, bool, numeric) AS INSERT INTO foo VALUES($1, $2, $3, $4); EXECUTE fooplan(1, ‘Hunter Valley’, ‘t’, …

Does Python support MySQL prepared statements? Question: I worked on a PHP project earlier where prepared statements made the SELECT queries 20% faster. I’m wondering if it works on Python? I can’t seem to find anything that specifically says it does or does NOT. Asked By: rubayeet || Source Answers: Most languages provide a way …