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2893. Calculate Orders Within Each Interval
Description
Table: Orders
+++  Column Name  Type  +++  minute  int   order_count  int  +++ minute is the primary key for this table. Each row of this table contains the minute and number of orders received during that specific minute. The total number of rows will be a multiple of 6.
Write a query to calculate total orders within each interval. Each interval is defined as a combination of 6
minutes.
 Minutes
1
to6
fall within interval1
, while minutes7
to12
belong to interval2
, and so forth.
Return the result table ordered by interval_no in ascending order.
The result format is in the following example.
Example 1:
Input: Orders table: +++  minute  order_count  +++  1  0   2  2   3  4   4  6   5  1   6  4   7  1   8  2   9  4   10  1   11  4   12  6  +++ Output: +++  interval_no  total_orders  +++  1  17   2  18  +++ Explanation:  Interval number 1 comprises minutes from 1 to 6. The total orders in these six minutes are (0 + 2 + 4 + 6 + 1 + 4) = 17.  Interval number 2 comprises minutes from 7 to 12. The total orders in these six minutes are (1 + 2 + 4 + 1 + 4 + 6) = 18. Returning table orderd by interval_no in ascending order.
Solutions

# Write your MySQL query statement below WITH T AS ( SELECT minute, SUM(order_count) OVER ( ORDER BY minute ROWS 5 PRECEDING ) AS total_orders FROM Orders ) SELECT minute / 6 AS interval_no, total_orders FROM T WHERE minute % 6 = 0;