I would like to have some help to create a more streamlined SQL statement.

My current statement:

String where = " Where pinbr Like " + lookupString + " And posstr(pinbr, 'DEV') < 1 And posstr(pinbr, 'DYN') < 1 And posstr(pinbr, 'ST') < 1 And posstr(pinbr, 'CDR') < 1";
	
"Select pinbr, cinbr, ITDSC, qtypr From amflib1.pstdtl" +;
" Join " amflib1.itment" +;
" On amflib1.pstdtl.cinbr = amflib1.itment.itnbr" +;
where