1 IF EXISTS(SELECT TOP 1 * FROM sys.tables WHERE name=N'EmployeeNo_Identity') 2 DROP TABLE EmployeeNo_Identity 3 GO 4 5 CREATE TABLE EmployeeNo_Identity( 6 ID BIGINT NOT NULL IDENTITY(1000000,1) PRIMARY KEY, 7 CreateDate DATETIME DEFAULT(GETDATE()) 8 ) 9 10 11 IF EXISTS(SELECT TOP 1 * FROM SYS.procedures WHERE name=N'proc_Build_Employee_ID') 12 DROP PROC proc_Build_Employee_ID 13 GO 14 15 CREATE PROC proc_Build_Employee_ID 16 @prefix NCHAR(1), 17 @result nvarchar(8) OUT 18 AS 19 BEGIN 20 DECLARE @id BIGINT 21 INSERT INTO EmployeeNo_Identity(CreateDate) VALUES(GETDATE()) 22 SELECT @id=MAX(ID) FROM EmployeeNo_Identity NOLOCK 23 DELETE EmployeeNo_Identity 24 SET @result=CAST( @prefix+CONVERT(NVARCHAR(7),@id) AS NVARCHAR(8)) 25 END 26 GO 27 28 29 /** 调用 **/ 30 DECLARE @result NVARCHAR(8) 31 EXEC [dbo].[proc_Build_Employee_ID] 32 @prefix = N'E', 33 @result=@result OUT 34 SELECT @result