业务系统需要一个关于合同状态的报表，主要显示合同的状态，地区，合同客户类型，合同金额，利息金额等信息.
在数据库中存在4个表
crec01c,sysc01,sysc03d,crmc02分别是'合同主表','区域及业务伙伴','系统状态代码','法人信息表'
下面第一个存储过程是我第一次写的,执行时间是5秒
------------------效率较差的存储过程---------------------------
CREATE TABLE #tmptba --创建一个临时表，用于储存我们的结果
(
colID int IDENTITY(1,1) PRIMARY KEY CLUSTERED,
khlx varchar(20),
dq varchar(20),
ywhb varchar(40),
htzt varchar(20),
htbs int ,
htje numeric(13,2),
lxje numeric(13,2)
)
DECLARE @bkhlx char(1), @ikhid int, @cywdbd char(10), @chtzt char(1), @njkje numeric(13,2), @iqx int, @nhtyll numeric(8,6) --FOR Progress
DECLARE @t_khlx varchar(20), @t_dq varchar(20), @t_ywhb varchar(40), @t_htzt varchar(20), @t_htbs int, @t_htje numeric(13,2), @t_lxje numeric(13,2)--FOR INSERT INTO #tmptba
--DECLARE @index int
--SET @index = 1
DECLARE cur1 CURSOR FOR SELECT bkhlx, ikhid, cywdbd, chtzt, njkje, iqx, nhtyll FROM crec01c
OPEN cur1
FETCH NEXT FROM cur1 INTO @bkhlx, @ikhid, @cywdbd, @chtzt, @njkje, @iqx, @nhtyll
WHILE @@FETCH_STATUS = 0
BEGIN
IF @bkhlx = '1'
BEGIN
SET @t_khlx = '自然人'
SET @t_dq = (SELECT vjgmc FROM sysc01 WHERE cjgdm = left(@cywdbd,6))
END
ELSE
BEGIN
SET @t_khlx = '法人'
SET @t_dq = (SELECT vjgmc FROM sysc01 WHERE cjgdm = (SELECT cbmdm FROM crmc02 WHERE frid = @ikhid ) )
END
SET @t_htbs = 1-- @index--合同笔数
SET @t_ywhb = (SELECT vjgmc FROM sysc01 WHERE cjgdm = @cywdbd)--业务伙伴
SET @t_htzt = (SELECT vsjxc FROM sysc03d WHERE czddm = 'htzt' AND csjxm = @chtzt)--合同状态
SET @t_htje = @njkje
SET @t_lxje = @njkje * @iqx * @nhtyll * 0.001
INSERT INTO #tmptba (khlx, dq, ywhb, htzt, htbs, htje, lxje) VALUES (@t_khlx, @t_dq, @t_ywhb, @t_htzt, @t_htbs, @t_htje, @t_lxje)
--SET @index 1
FETCH NEXT FROM cur1 INTO @bkhlx, @ikhid, @cywdbd, @chtzt, @njkje, @iqx, @nhtyll
END
CLOSE cur1
DEALLOCATE cur1
SELECT * FROM #tmptba
GO
------------------效率较高的存储过程执行时间是1秒---------------------------
CREATE TABLE #tmptbl --创建一个临时表，用于储存我们的结果
(
colID int IDENTITY(1,1) PRIMARY KEY CLUSTERED,
khlx varchar(20),
dq varchar(20),
ywhb varchar(40),
htzt varchar(20),
htbs int ,
htje numeric(13,2),
lxje numeric(13,2)
)
INSERT INTO #tmptbl SELECT CASE WHEN a.bkhlx = '1' THEN '自然人' ELSE '法人' END AS khlx, dq = (SELECT vjgmc FROM sysc01 WHERE cjgdm = left(a.cywdbd,6)), ywhb = (SELECT vjgmc FROM sysc01 WHERE cjgdm = a.cywdbd), htzt = (SELECT vsjxc FROM sysc03d WHERE czddm = 'htzt' AND csjxm = a.chtzt), htbs = 1, htje = a.njkje, lxje = a.njkje * a.iqx * a.nhtyll * 0.001 FROM crec01c a WHERE a.bkhlx = '1'
INSERT INTO #tmptbl SELECT CASE WHEN a.bkhlx = '1' THEN '自然人' ELSE '法人' END AS khlx, dq = (SELECT vjgmc FROM sysc01 WHERE cjgdm = (SELECT cbmdm FROM crmc02 WHERE frid = a.ikhid)), ywhb = '无', htzt = (SELECT vsjxc FROM sysc03d WHERE czddm = 'htzt' AND csjxm = a.chtzt), htbs = 1, htje = a.njkje, lxje = a.njkje * a.iqx * a.nhtyll * 0.001 FROM crec01c a WHERE a.bkhlx = '2'
SELECT * FROM #tmptbl
GO
可以看到，第二个存储过程只用了两条sql语句就完成了第一个存储过程的工作。 
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