had patient 1798 received a laboratory test for sodium, urine until 2102?
select count(*)>0 from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'sodium, urine' ) and labevents.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 1798 ) and strftime('%y',labevents.charttime) <= '2102'