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表格中有重复记录,用DISTINCT去除重复。 --- Method 1: JOIN ---SELECTc.company_code,c.founder,lm.lead_manager_cnt,sm.senior_manager_cnt,m.manager_cnt,e.employee_cntFROMcompanycJOIN(SELECTcompany_code,COUNT(DISTINCTlead_manager_code)ASlead_manager_cntFROMlead_managerGROUPBY1)lmONc.company_code=l...
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