SQL Queries for Employee Data: Designations and Job IDs
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SELECT COUNT(DISTINCT designation) FROM employees;
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SELECT job_id, employee_id FROM employees;
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SELECT COUNT(DISTINCT designation) FROM employees;
SELECT job_id, employee_id FROM employees;
原文地址: https://www.cveoy.top/t/topic/nFO2 著作权归作者所有。请勿转载和采集!