S) How to find dept wise 2nd and 3rd highest salary .

-

Sort : Dept-Asc 

Salary-Desc 

Scan 

Key –Dept 

Let decimal (“ “) rank =0; 

Type temporary type = 

Record 

Decimal(“|”) count ; 

End; 

Temp :: initialize(in)= 

Begin 

Temp. rank=0; 

Temp.count :: 0; 

End; 

Temp::scan(temp,in)= 

Begin 

Rank =(if(temp.count=in.sal)rank else rank +1; 

Temp.count  ::temp.count+1; 

End; 

Temp :: finalize(temp,in)= 

Begin 

Out.* ::in.* ; 

End; 

Out ::output_select(out)= 

Begin 

Out ::rank ==2 or rank ==3; 

End; 

 

Note :- If any dept doesn’t have 3 rd highest or 2nd highest then also above code will work , but in output that dept data will not come

 

 

 

 

 

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