SQLSERVER 根据传入的参数拼接sql语句字符串，反馈结果集

ALTER PROCEDURE [dbo].[usp_visit_detail]

(@siteid BIGINT,

@Startime VARCHAR(15),

@Endtime VARCHAR(15),

@Aflag INT = 10, --初始值为10，非10，则表示有传入参数

@Area VARCHAR(20) = 'N', -- --初始值为N，非N，则表示有传入参数

@Nflag INT = 10, -初始值为10，非10，则表示有传入参数

@VALUE1 varchar(20) = 'N' --初始值为N，非N，则表示有传入参数

)

AS

BEGIN

DECLARE @AFlag0 varchar(50),

@NFlag0 varchar(50),

--@Sqlstr0 varchar(600),

@Sqlstr varchar(2000)

IF @AFlag = 10

SET @AFlag0 = ''

ELSE

SET @AFlag0 = ' AND AFlag=' + CAST(@AFlag AS VARCHAR)

IF @Area = 'N'

SET @Area = ''

ELSE

SET @Area = ' AND province=' + '''' + @Area + ''''

IF @NFlag = 10

SET @NFlag0 = ''

ELSE

SET @NFlag0 = ' AND NFlag=' + CAST(@NFlag AS VARCHAR)

IF @Value1 = 'N'

SET @Value1 = ''

ELSE

SET @Value1 = ' AND value1=' + '''' + @Value1 + ''''

SET @Sqlstr = 'SELECT a.Intime, c.Visitornm, c.Vcount, (CASE WHEN a.value2 = '+''''+''''+' THEN a.value1 + '+''''+''''+' WHEN a.value2 != '+''''+''''+' THEN a.value1 +'+ ''''+'-'+''''+' + a.value2 END) AS source0,

DATEDIFF(ms,a.Intime, a.Outtime) AS vtime, a.Pages, a.Rev1, dbo.GET_URL(a.SiteID, a.InURLID) AS inrul, dbo.GET_URL(a.SiteID, a.OutURLID) AS outrul

FROM dbo.F_Pages_T AS a INNER JOIN (SELECT VisitorID, MAX(ID) AS id FROM dbo.F_Pages_T WHERE SiteID = '+''''+CONVERT(VARCHAR,@siteid)+''''+ 'AND day0>= '+@startime+' AND day0<= ' +@endtime+@aflag0

+@area + @Nflag0+ @Value1 +' GROUP BY VisitorID) AS b ON a.ID = b.id LEFT OUTER JOIN dbo.F_Visit AS c ON a.VisitorID = c.VisitorID'

PRINT @sqlstr

EXEC (@sqlstr)

END