单选题
发布日期:2020-04-10
SELECT*FROMemp_dept_vu;
SELECTdepartment_id,SUM(salary)FROMemp_dept_vuGROUPBYdepartment_id;
SELECTdepartment_id,job_id,AVG(salary)FROMemp_dept_vuGROUPBYdepartment_id,job_id;
SELECTjob_id,SUM(salary)FROMemp_dept_vuWHEREdepartment_idIN(10,20)GROUPBYjob_idHAVINGSUM(salary)>;20000;
Noneofthestatementsproduceanerror;allarevalid
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