BEGIN TRANSACTION CREATE TABLE dbo.Tmp_estate_users ( EstateID int NOT NULL, uuid uniqueidentifier NOT NULL ) ON [PRIMARY] IF EXISTS(SELECT * FROM dbo.estate_users) EXEC('INSERT INTO dbo.Tmp_estate_users (EstateID, uuid) SELECT EstateID, CONVERT(uniqueidentifier, uuid) FROM dbo.estate_users WITH (HOLDLOCK TABLOCKX)') DROP TABLE dbo.estate_users EXECUTE sp_rename N'dbo.Tmp_estate_users', N'estate_users', 'OBJECT' CREATE NONCLUSTERED INDEX IX_estate_users ON dbo.estate_users ( EstateID ) WITH( STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] COMMIT