Finding a matching date and title among many variables in SAS - sas

Question

I have a data set that is a list of employees with their job titles and month and year that job title started for their entire career here.
It looks something like this: employeeID JobTitle1 MonthYearofTitle1 Department1 Jobtitle2 MonthYearofTitle2 Department2 etc.
I have another list of employees that are not in the first data set and only have one job title and date of title. My goal is to match employees in the 2nd data set with employees in the 1st based on their job title and month/year, but I am completely unsure of how to do this match because it involves information being present among multiple variables.
Put another way, if I have MarySue who has became an admin in Jan2017, I want to match her with JohnDoe who also became an admin in Jan2017 and flag them as a match for further analysis.
Unfortunately, I am not sure where to even begin with my code so I don't have things I've tried. The data would look like this
Data set 1
employeeID JobTitle1 MonthYearofTitle1 Jobtitle2 MonthYearofTitle2
JohnDoe Intern Jan2016 Admin Jan2017
JakeSo VP Jul2017
JulieDo Manager April2017
Data set 2
employeeID JobTitle1 MonthYearofTitle1
MarySue Admin Jan2017
JaneDoe Admin Jan2017
Greg VP Jul2017
Desired Outcome / Data set:
Employee1 Employee2 Title Date Flag
JohnDoe MarySue Admin Jan2017 Match
JakeSo Greg VP Jul2017 Match
JulieDo Admin Jan2017 No Match
Can anyone help?

Answer 1

You can do a FULL JOIN or Left JOINand use Case statement to create a calculated field to indicate the matching records.
The code below will do a Full Join and create a flag field:
Creating Table1 & Table2: Only 1 record will match
data table1;
input employeeID $ JobTitle1 $ MonthYearofTitle1 Jobtitle2 $ MonthYearofTitle2 ;
informat MonthYearofTitle1 monyy7. MonthYearofTitle2 monyy7.;
format MonthYearofTitle1 monyy7. MonthYearofTitle2 monyy7.;
datalines;
JohnDoe Intern Jan2016 Admin Jan2017
TomJones Junior Jul2016 Admin Jul2017
;
run;
data table2;
input employeeID $ JobTitle1 $ MonthYearofTitle1 ;
informat MonthYearofTitle1 monyy7.;
format MonthYearofTitle1 monyy7.;
datalines;
MarySue Admin Jan2017
JackieC Admin Jul2013
;
run;
Full Join: To get all data
proc sql;
create table want as
select
t1.employeeID as t1_employeeID , t2.employeeID as t2_employeeID,
t2.JobTitle1 as t2_JobTitle,
t2.MonthYearofTitle1 as t2_MonthYearofTitle1,
case when
((t1.JobTitle1=t2.JobTitle1 and t1.MonthYearofTitle1=t2.MonthYearofTitle1) or (t1.JobTitle2=t2.JobTitle1 and t1.MonthYearofTitle2=t2.MonthYearofTitle1)) then "Match"
else "No-Match" end as flag
from table1 as t1 full join table2 as t2
on (t1.JobTitle1=t2.JobTitle1 and t1.MonthYearofTitle1=t2.MonthYearofTitle1) or (t1.JobTitle2=t2.JobTitle1 and t1.MonthYearofTitle2=t2.MonthYearofTitle1)
;
quit;
Results:
t1_employeeID=JohnDoe t2_employeeID=MarySue t2_JobTitle=Admin t2_MonthYearofTitle1=JAN2017 flag=Match
t1_employeeID= t2_employeeID=JackieC t2_JobTitle=Admin t2_MonthYearofTitle1=JUL2013 flag=No-Match
t1_employeeID=TomJones t2_employeeID= t2_JobTitle= t2_MonthYearofTitle1=. flag=No-Match
Update:
Left Join: To get only records from table 1
proc sql;
create table want as
select
t1.employeeID as Employee1 , t2.employeeID as Employee2,
coalescec(t2.JobTitle1,t1.JobTitle2,t1.JobTitle1) as Title,
coalesce(t2.MonthYearofTitle1,t1.MonthYearofTitle2,t1.MonthYearofTitle1) as Date format monyy7.,
case when
((t1.JobTitle1=t2.JobTitle1 and t1.MonthYearofTitle1=t2.MonthYearofTitle1) or (t1.JobTitle2=t2.JobTitle1 and t1.MonthYearofTitle2=t2.MonthYearofTitle1)) then "Match"
else "No-Match" end as Flag
from table1 as t1 left join table2 as t2
on (t1.JobTitle1=t2.JobTitle1 and t1.MonthYearofTitle1=t2.MonthYearofTitle1) or (t1.JobTitle2=t2.JobTitle1 and t1.MonthYearofTitle2=t2.MonthYearofTitle1)
;
quit;

Answer 2

Here's what I would do. First change both datasets so the have just the following columns:
employeeID, JobTitle, MonthYear
then do a proc sql:
proc sql noprint:
select a.employeeID,b.employeeId,a.jobTitle,a.MonthYear
from firstdataset as a
inner join seconddataset as b
on a.employeeId = b.employeeId
and a.jobTitle = b.jobTitle
and a.MonthYear = b.MonthYear;
quit;
Give that a go and let me know what you get
also, depending on your data you can create the initial tables with:
data b;
keep employeeId title monthyear;
set a;
array x [*] _CHARACTER_;
y= dim(x);
do i = 2 to y;
if (mod(i,2) = 0)then do;
Title = x[i];
monthyear = x[i+1];
output;
end;
end ;
run;