sql - Maximum salary of employee in specific department -

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empid   empname empsalary   empdept 1       steve    5000       hr 2       robert   5000       management 3       brad     3000       hr 4       sam      4000       hr 5       dave     2000       management 6       stuvart  4500       management

how employee details employee table salary max , belong hr department... query 

select empid,empname,empsalary,empdept  employee  empsalary in (select max(empsalary) employee)  , empdept='hr'

i tried above query, giving me accurate result, due performance issue can not use inner queries.

you can use order by clause rownum oracle version < 12c:

select empid, empname, empsalary, empdept  employee  rownum = 1 , empdept = 'hr' order empsalary desc

otherwise can use following:

select empid, empname, empsalary, empdept  employee  empdept = 'hr' order empsalary desc fetch first row ties

p.s.: with ties option brings opportunity multiple results in case there multiple employees same max salary (so resulting set may differ 1 using rownum, there 1 row in resulting set).


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