SQL – How to Update and Select in the same query

— CREATE TEMP TABLE
CREATE TABLE #TempTable ( URN INT, F1 VARCHAR( 50), F2 VARCHAR(50 ), USED VARCHAR (1))

— INSERT DATA
insert into #TempTable values ( 1,’F1_Val_1′ ,’F2_val_1′, ‘N’)
insert into #TempTable values ( 2,’F1_Val_2′ ,’F2_val_2′, ‘N’)
insert into #TempTable values ( 3,’F1_Val_3′ ,’F2_val_3′, ‘N’)

— UPDATE SINGLE ROW IN TABLE WITH NEW VALUE
— USING OUTPUT COMMAND TO RETURN FIELDS OF UPDATED ROW
UPDATE #TempTable
SET F1 = ‘F1_New_Val’
OUTPUT Inserted.URN, Inserted.F1, Inserted.F2
WHERE URN = 1

— UPDATE MULTIPLE ROWS IN TABLE WITH NEW VALUE
— USING OUTPUT COMMAND TO RETURN FIELDS OF UPDATED ROWS
UPDATE #TempTable
SET F1 = ‘F1_And_F3_new_Val’
OUTPUT Inserted.URN, Inserted.F1, Inserted.F2
WHERE URN in (1 ,3)

— UPDATE ALL ROWS IN TABLE WITH NEW VALUE
— USING OUTPUT COMMAND TO RETURN FIELDS OF ALL ROWS IN TABLE
UPDATE #TempTable
SET F1 = ‘New_Global_Val’
OUTPUT Inserted.URN, Inserted.F1, Inserted.F2

— UPDATE TOP 1 ROW IN TABLE WITH NEW VALUE
— MARK USED = ‘Y’
— USING OUTPUT COMMAND TO RETURN FIELDS OF UPDATED ROW
UPDATE #TempTable
SET F1   = ‘F1_New_Val’
,USED = ‘Y’
OUTPUT Inserted.URN, Inserted.F1, Inserted.F2
WHERE URN in (select max( URN) from #TempTable WHERE used = ‘N’)

— DROP TEMP TABLE
DROP TABLE #TempTable