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create table #tbl1(unique_ID nvarchar(max)) insert into #tbl1 values ('1'),('2'),('3'),('4') create table #tbl2(unique_ID nvarchar(max)) insert into #tbl2 values ('a'),('b'),('c'),('d') select * from #tbl1,#tbl2 --SELECT unique_ID , s.f FROM #tbl1 cross apply(select top 1 unique_ID as f from #tbl2) s