SQL SERVER PROCEDURE 创建之牛刀小试(含声明变量）

USE [shzoo0127]
GO
/****** 对象:  StoredProcedure [dbo].[PRC_CheckCard_SELECT_t3]    脚本日期: 01/10/2012 23:38:26 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE PROCEDURE  [dbo].[PRC_CheckCard_SELECT_t3]
@BARCODE  NVARCHAR(50)
AS
SET NOCOUNT ON 
DECLARE @MAXDATE NVARCHAR(10);
select @MAXDATE=CONVERT(NVARCHAR(10),MAX(mfcrd_expire),121) from mfcrd_tbl  left join TWB_ACCESS_BATCH
  on MFCRD_CONTICNO =WBID left join MFCRDTP_TBL  on MFCRD_TYPE=MFCRDTP_CARDTYPE
 WHERE STATUS='0'
    AND wbid = @BARCODE
 AND CONVERT(NVARCHAR(10),TCKSTARTDATE,121)<=CONVERT(NVARCHAR(10),GETDATE(),121)
 AND CONVERT(NVARCHAR(10),TCKENDDATE,121)>=CONVERT(NVARCHAR(10),GETDATE(),121)
 select @MAXDATE
select * from mfcrd_tbl  left join TWB_ACCESS_BATCH
  on MFCRD_CONTICNO =WBID left join MFCRDTP_TBL  on MFCRD_TYPE=MFCRDTP_CARDTYPE
 WHERE STATUS='0'
    AND wbid = @BARCODE
 AND CONVERT(NVARCHAR(10),TCKSTARTDATE,121)<=CONVERT(NVARCHAR(10),GETDATE(),121)
 AND CONVERT(NVARCHAR(10),TCKENDDATE,121)>=CONVERT(NVARCHAR(10),GETDATE(),121)
 AND CONVERT(NVARCHAR(10),mfcrd_expire,121)=@MAXDATE
select @@ROWCOUNT