SQL statement splicing in SQL stored procedures

set ANSI_NULLS ON

set QUOTED_IDENTIFIER ON

go

-- ================================== ===========

-- Author:wgh

-- Create date: 2012-06-07

-- Description: IP access pre-statistics

-- ====== =======================================

CREATE PROCEDURE [dbo].[PROC_HB_PreStatByIP]

@BeginTime varchar(50),

@EndTime varchar(50),

@TimeType int, --0 represents hours, 1 represents days

@ChannelID varchar(10)='0',

@I pAddress varchar(20)

AS

BEGIN

declare @sql1 nvarchar(2000)

IF @TimeType = 0

BEGIN

SET @sql1='SELECT CONVERT(varchar(13),AddTime ,120) AS ' 'Date''

,ChannelID AS ''Promotion channel''

,IPAddress AS ''IP address''

,ViewCount AS ''Number of views''

​​​​​​​,ClickCount AS ''Number of clicks''

FROM dbo.HB_AdPreStatIP WHERE AddTime>='''+@BeginTime+''' AND AddTime

                                                                                                                                               sql1 =@sql1 + ' AND ChannelID='''+@ChannelID+''''

                                                                                                                 1 +' AND IPAddress=' ''+@IpAddress+''''

    END

      SET @sql1 =@sql1+' ORDER BY ViewCount DESC' END

                           'SELECT CONVERT(varchar(10), AddTime,120) AS ''Date''

,ChannelID AS ''Promotion channel''

,IPAddress AS ''IP address''

,              , SUM(ViewCount) AS                                                                                                                                                                                 , SUM (ViewCount) (ClickCount) AS ''Number of clicks''

                                                                                  ‐ ‐ ‐ ‐ ‑ ‑ ‐ ‐ dbo.HB_AdPreStatIP WHERE ​'0'

                                                                                                                                                         

                                                                                                                                                                                                                                                                                                      sql1 =@sql1 +' AND IPAddress='''+@IpAddress+''''

    END

SET @sql1 =@sql1 + 'GROUP BY CONVERT(varchar(10),AddTime,120),ChannelID,IPAddress ORDER BY SUM(ViewCount) DESC'

END

EXEC sp_executesql @sql1

END