I have been going around and around with storing date and time in SQLite3 with the intention of retrieving the records using comparisons later e.g. SELECT * WHERE date1 < date2
I finally gave up trying to store datetime.datetime objects and decided to use a UNIX timestamp instead as they are just an int and easy to manipulate but I am still getting errors.
import sqlite3 as lite import datetime import time conn = lite.connect('dispatcher.db') cur = conn.cursor() query = "create table if not exists new_test (curent_dt)" cur.execute(query) conn.commit() now = datetime.datetime.now() - datetime.timedelta(minutes=60) temp = int(time.mktime(now.timetuple())) cur.execute('insert into new_test (curent_dt) values (? )', (temp)) conn.commit() conn.close()
returns the following error:
cur.execute('insert into new_test (curent_dt) values (? )', (temp)) ValueError: parameters are of unsupported type
After investigating the problem a little further I found that you have to use a trailing comma to create a single element tuple e.g. (temp,)
Note the added comma after "temp" below:
cur.execute('insert into new_test (curent_dt) values (?)', (temp,))
The reason this happens is that (temp)
is an integer but (temp,)
is a tuple of length one containing temp
.
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