How do I use date intervals in SQL?
You can use the INTERVAL
keyword in SQL to add or subtract time from a date. For example, DATE_ADD(NOW(), INTERVAL 1 DAY)
adds one day to the current date.
Can you show me an example of subtracting a month from a date?
Sure! You can use DATE_SUB
like this: DATE_SUB('2023-10-01', INTERVAL 1 MONTH)
which will return '2023-09-01'.
What if I want to get the difference between two dates?
You can use the DATEDIFF
function. For example, DATEDIFF('2023-10-01', '2023-09-01')
will return 30, which is the number of days between the two dates.
Are there any other date functions I should know about?
Yes, functions like NOW()
, CURDATE()
, and DATE_FORMAT()
are also very useful for working with dates in SQL.
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