--select * from import_approval BEGIN TRANSACTION SET QUOTED_IDENTIFIER ON SET ARITHABORT ON SET NUMERIC_ROUNDABORT OFF SET CONCAT_NULL_YIELDS_NULL ON SET ANSI_NULLS ON SET ANSI_PADDING ON SET ANSI_WARNINGS ON COMMIT BEGIN TRANSACTION GO ALTER TABLE dbo.Import_approval ADD usedweight numeric(18, 6) NULL GO ALTER TABLE dbo.Import_approval ADD CONSTRAINT DF_Import_approval_usedweight DEFAULT 0 FOR usedweight GO ALTER TABLE dbo.Import_approval SET (LOCK_ESCALATION = TABLE) GO COMMIT update Import_approval set usedweight=0