1. The INTERSECT Operator5
The INTERSECT Operator
Common unique rows from both result sets are selected.

2. Flow Diagram: INTERSECT Operator
CORR
Yes
Remove nonmatching columns. No
ALL No
Yes
Remove duplicate rows.
Save matching rows.
End

3. Example Data Sets data t1(drop=i) t2(drop=i rename=(z=w));
call streaminit(13453);
do i= 1 to 3;
x=int(rand("uniform")*5);
z=int(rand("uniform")*5);
output t1;
output t2;
end;
do i= 4 to 6;
run;
data t1;
set t1 end=done;
output;
if done then output;
data t2;
set t2 end=done;
if _n_=1 then output;
title "t1";
proc print data=t1 noobs;run;
title "t2";
proc print data=t2 noobs;run;
title;

4. proc sql;
select *
from t1
intersect
from t2 ;
quit;

5. proc sql;
select *
from t1
intersect corr
from t2 ;
quit;

6. proc sql;
select *
from t1
intersect all
from t2 ;
quit;

7. Orion Star frequently hires experienced Sales staff at higher levels on the assumption that they will be more productive than inexperienced personnel.
Create a report that displays the employee identification number of current Level III and Level IV Sales staff hired in 2004, who made at least one sale by the end of 2005.
orion.Order_fact table contains information on all sales.
orion.Sales table contains information about current Sales employees, including job titles and hire dates.

8. The INTERSECT Operator
Need a query that returns information from rows that exist in both orion.Sales and orion.Order_fact.
sales by Sales staff

9. Create a report that displays the employee identification number of current Level III and Level IV Sales staff hired in 2004, who made at least one sale by the end of 2005.
proc sql;
select Employee_ID
from orion.Sales
where year(Hire_date)=2004
and scan(Job_Title,-1) in ("III","IV")
intersect all
select distinct Employee_ID
from orion.Order_fact
where year(Order_date) le 2005;
quit;
s106d08