1543. Fix Product Name Format π
Description
Table: Sales
+--------------+---------+ | Column Name | Type | +--------------+---------+ | sale_id | int | | product_name | varchar | | sale_date | date | +--------------+---------+ sale_id is the column with unique values for this table. Each row of this table contains the product name and the date it was sold.
Since table Sales was filled manually in the year 2000
, product_name
may contain leading and/or trailing white spaces, also they are case-insensitive.
Write a solution to report
product_name
in lowercase without leading or trailing white spaces.sale_date
in the format('YYYY-MM')
.total
the number of times the product was sold in this month.
Return the result table ordered by product_name
in ascending order. In case of a tie, order it by sale_date
in ascending order.
The result format is in the following example.
Example 1:
Input: Sales table: +---------+--------------+------------+ | sale_id | product_name | sale_date | +---------+--------------+------------+ | 1 | LCPHONE | 2000-01-16 | | 2 | LCPhone | 2000-01-17 | | 3 | LcPhOnE | 2000-02-18 | | 4 | LCKeyCHAiN | 2000-02-19 | | 5 | LCKeyChain | 2000-02-28 | | 6 | Matryoshka | 2000-03-31 | +---------+--------------+------------+ Output: +--------------+-----------+-------+ | product_name | sale_date | total | +--------------+-----------+-------+ | lckeychain | 2000-02 | 2 | | lcphone | 2000-01 | 2 | | lcphone | 2000-02 | 1 | | matryoshka | 2000-03 | 1 | +--------------+-----------+-------+ Explanation: In January, 2 LcPhones were sold. Please note that the product names are not case sensitive and may contain spaces. In February, 2 LCKeychains and 1 LCPhone were sold. In March, one matryoshka was sold.
Solutions
Solution 1
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