Calculate attrition rate by department

#2 · 2 of 5Free sample

Exercises (5)

Instructions

Attrition rate is terminated records divided by all records. Find the five departments with the highest attrition rate.

Return four columns: department_name, employees, terminated, and attrition_pct rounded to 1 decimal. Order by attrition_pct from highest to lowest, then by , and return 5 rows.

department_name

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Tables

5 tables · 29 columns

departments4 cols

department_idTEXT PRIMARY KEY
department_nameTEXT NOT NULL
business_unitTEXT NOT NULL
regionTEXT NOT NULL

job_roles6 cols

role_idTEXT PRIMARY KEY
role_titleTEXT NOT NULL
job_familyTEXT NOT NULL
job_levelTEXT NOT NULL
salary_band_minREAL NOT NULL
salary_band_maxREAL NOT NULL

employees5 cols

employee_idTEXT PRIMARY KEY
hire_dateTEXT NOT NULL
age_bandTEXT NOT NULL
education_levelTEXT NOT NULL
commute_bandTEXT NOT NULL

employment_records9 cols

employment_record_idTEXT PRIMARY KEY
employee_idTEXT NOT NULL
department_idTEXT NOT NULL
role_idTEXT NOT NULL
started_atTEXT NOT NULL
ended_atTEXT
employment_statusTEXT NOT NULL
termination_typeTEXT
base_salaryREAL NOT NULL

performance_reviews5 cols

review_idTEXT PRIMARY KEY
employee_idTEXT NOT NULL
review_dateTEXT NOT NULL
review_scoreINTEGER NOT NULL
review_outcomeTEXT NOT NULL

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