I have the following stored proc and trying to figure out how i would do a check for NULLs around all of the fields. I am pretty new at this.ThanksCREATE PROCEDURE [dbo].[pr_SegmentID_update_Edit]ASBEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; UPDATE ad SET nSegmentID = CASE WHEN cChargeOffReason = '10' AND nRecoveryScore >= 526 THEN 1 WHEN cChargeOffReason = '10' AND nRecoveryScore < 526 THEN 2 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo = 'Y' AND c.accountid IS NOT NULL AND nRecoveryScore BETWEEN 485 AND 525 THEN 3 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo <> 'Y' AND c.accountid IS NOT NULL AND nRecoveryScore >= 526 THEN 4 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo = 'Y' AND c.accountid IS NOT NULL AND nRecoveryScore >= 526 THEN 5 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo <> 'Y' AND c.accountid IS NULL AND nRecoveryScore >= 526 THEN 6 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo = 'Y' AND c.accountid IS NULL AND nRecoveryScore BETWEEN 485 AND 525 THEN 7 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo = 'Y' AND c.accountid IS NULL AND nRecoveryScore >= 526 THEN 8 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo <> 'Y' AND c.accountid IS NULL AND nRecoveryScore < 526 THEN 9 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo <> 'Y' AND c.accountid IS NOT NULL AND nRecoveryScore < 526 THEN 10 WHEN cChargeOffReason <> '10' AND cVoluntaryRepo = 'Y' AND nRecoveryScore BETWEEN 436 AND 484 THEN 11 ELSE 12 END FROM Stg_Accountdaily ad LEFT JOIN CONTACT c ON c.accountid = ad.accountid AND c.contactTypeid in(5,6,13,16) END