Question: MySQL query for Are customers getting more dissatisfied over time? Hint: Need the percentage of different types of customer feedback in each quarter. Use a

MySQL query for Are customers getting more dissatisfied over time?

Hint: Need the percentage of different types of customer feedback in each quarter. Use a common table expression and determine the number of customer feedback in each category as well as the total number of customer feedback in each quarter. Now use that common table expression to find out the percentage of different types of customer feedback in each quarter.

Eg:

(

total number of very good feedback

/

total customer feedback

) * 100

gives you the percentage of very good feedback.

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