String query in Arrays

[deega]

I have a dataset like below

No Process
1 AB C
2 AB D
3 XYZ
4 YYY
5 AB C
6 XYZ
7 DE F
8 AB D
9 AB D
10 YYY

I want to find the values that does not contain AB* as follows using arrays.

No Process
3 XYZ
4 YYY
6 XYZ
7 DE F
10 YYY

Please advise.

[Reeza]

Where do arrays come into the process?

It should be a single filter, either a WHERE or IF statement.

if indexw( process, 'AB') > 0 then keep;

or 

WHERE process like '%AB%';

[Ksharp]

data have;
input No Process $;
cards;
1 AB C
2 AB D
3 XYZ
4 YYY
5 AB C
6 XYZ
7 DE F
8 AB D
9 AB D
10 YYY
;
run;

data want;
 set have;
 if upcase(process) =: 'AB' then delete;
run;

[Jagadishkatam]

alternatively with perl regular expression

if prxmatch('m/(AB)/',process) then delete;