Compute the percentile rank of each doctor's salary using PERCENT_RANK(). Return first_name, last_name, salary, and salary_percentile (rounded to 2 decimals). Order by salary_percentile descending.
Schema
🔑idINT
first_nameTEXT
last_nameTEXT
specialtyTEXT
🔗department_idINT
emailTEXT
phoneTEXT
hire_dateTEXT
salaryREAL
postgresql
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