FAQ: Math and Date Functions - Date and Time Functions II

Frequently Asked Questions SQL FAQ
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This community-built FAQ covers the “Date and Time Functions II” exercise from the lesson “Math and Date Functions”.

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This exercise can be found in the following Codecademy content:

Analyze Data with SQL

FAQs on the exercise Date and Time Functions II

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2

I’m not sure if there is a glitch, but working with the DATETIME function, I’ve added the ‘localtime’ modifier, and I am not getting the current local time. I am getting a time that is 8 hours ahead. Am I supposed to get the local time of my current time zone? (PST) I can get the correct current local time by adding a ‘-8 hours’ modifier.

1 Like
3

I think Codecademy uses UTC time and servers use UTC. You right, we have to use modifier ‘+N hours’ for particular timezone.

4

On the Date and Time Functions II part of SQL where it says that the order will be ready for pick up 2 days after the order is made, at 7:00AM, 7 days a week. Why are we adding 7 hours in the code? it says it will be ready for pick up in 2 days and that it doesn’t matter what time of day the order was made so I don’t understand why we need to add 7 hours.

5

It’s not the clearest problem but I think the description is such that if an order is made on a Monday at 23:59 the earliest possible pickup is Wednesday and the earliest time for that pick up would be 07:00.

If you’re using the 'start of day' argument in the DATETIME function then the +7 hours should make sense.

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6

I was overthinking it, I thought it should have been different times since other orders were made in different times. Thank you!

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7

On the Date and Time Functions II part of SQL where it says that the order will be ready for pick up 2 days after the order is made, at 7:00AM, 7 days a week. Why are we adding 7 hours in the code? it says it will be ready for pick up in 2 days so shouldn’t we be adding 48 hours instead of 7?

CODE:
SELECT DATETIME(order_date, ‘start of day’, ‘+2 days’, ‘+48 hours’)
FROM bakery;