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/* [Q3] Are customers getting more dissatisfied over time? Hint: Need the percentage of different types of customer feedback in each quarter. Use a common
/* [Q3] 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.
i need sql query for this statement
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