Question

I have a SQL table with the following schema:

fruit_id INT 
price    FLOAT
date     DATETIME

This table contains many records where the price of a given fruit is recorded at a given time. There may be multiple records in a single day, there may be

I would like to be able to fetch a list of prices for a single fruit over the last 12 months inclusive of the current month. So given a fruit_id of 2 and datetime of now(), what would the price values be for December, January, February, … October, November?

Given the above requirements, what strategy would you use to get this data? Pure sql, fetch all prices and process in code?

Thanks for you time.

Answer 1

Are you talking about min price, max price, average price, or something else?

Here’s a quick query to get you started, which includes min, max, and average price for each month for fruit_id 2:

select left(date,7) as the_month, min(price),max(price),avg(price)
from fruit_price
where fruit_id = 2
and date >= concat(left(date_sub(curdate(), interval 11 month),7),'-01')
group by the_month;