关于存储进程的一个小题目

今天一下午我就用来写这个存储过程了。遇到了好几个问题，现在解决了，就晒一晒，看看各位大牛有没有啥更好的办法，算是抛砖引玉吧。。。

这个存储过程是我用来搜索拥有某种技能的用户的

存储过程
    
create PROCEDURE [dbo].[selectuserbypageandsearch]
@categoryid int,
@sex int,
@skillid int,
@ishaved int,
    
@pageindex int,
@pagesize int
    
AS
DECLARE @strSQL varchar(5000)
declare @whereSQL varchar(1000)
set @whereSQL='where 1=1 and dbo.Users.isskillopened=1'
if @ishaved>0
set @whereSQL=@whereSQL+'and dbo.Myskills.ishaved='+ltrim(STR(@ishaved))+''
if @sex>=0 
set @whereSQL =@whereSQL +' and dbo.Users.sex='+STR(@sex)+''
if @skillid>0
set @whereSQL =@whereSQL +' and dbo.Myskills.sid='+STR(@skillid)+''
if @skillid<=0 and @categoryid>=0
set @whereSQL =@whereSQL +' and dbo.Skills.categoryid='+STR(@categoryid)+''
    
    
IF @pageindex = 1
BEGIN
    
SET @strSQL ='SELECT DISTINCT TOP '+ STR(@pagesize) + '  dbo.Users.id, dbo.Users.name, dbo.Users.nickname,dbo.Users.xuehao
FROM    dbo.Myskills INNER JOIN
            dbo.Skills ON dbo.Myskills.sid = dbo.Skills.id INNER JOIN
            dbo.Users ON dbo.Myskills.uid = dbo.Users.id
            '+ STR(@whereSQL) + ''
    
end
ELSE
BEGIN
SET @strSQL ='SELECT DISTINCT TOP '+ STR(@pagesize) + '  dbo.Users.id, dbo.Users.name, dbo.Users.nickname,dbo.Users.xuehao
FROM    dbo.Myskills INNER JOIN
            dbo.Skills ON dbo.Myskills.sid = dbo.Skills.id INNER JOIN
            dbo.Users ON dbo.Myskills.uid = dbo.Users.id
            '+ STR(@whereSQL) + ' and dbo.Users.id >(SELECT ISNULL(MAX([id]),0) FROM (SELECT TOP '+STR((@pageindex-1)*@pagesize)+' id FROM [User] '+ STR(@whereSQL) + ' ORDER BY id) as A) ORDER by dbo.Users.id desc '
end
select @strSQL
EXEC(@strSQL)
GO

写好之后，把它执行一下。。。。

我使用的是下面的代码

exec selectuserbypageandsearch 1,-1,0,0,1,10  

果然有问题。。。。水平太菜。。。没办法。。错误显示的是

消息 8114，级别 16，状态 5，过程 selectuserbypageandsearch，第 27 行

从数据类型 varchar 转换为 float 时出错。

好吧，我见过这个错误，那就修改它。。。（虽然我不知道为什么要这么改。。。）

把

alter PROCEDURE [dbo].[selectuserbypageandsearch]
@categoryid int,
@sex int,
@skillid int,
@ishaved int,
    
@pageindex int,
@pagesize int
    
AS
DECLARE @strSQL varchar(5000)
declare @whereSQL varchar(1000)
set @whereSQL='where dbo.Users.isskillopened=1'
if @ishaved>0
set @whereSQL=@whereSQL+'and dbo.Myskills.ishaved='+ltrim(STR(@ishaved))+''
if @sex>=0 
set @whereSQL =@whereSQL +' and dbo.Users.sex='+STR(@sex)+''
if @skillid>0
set @whereSQL =@whereSQL +' and dbo.Myskills.sid='+STR(@skillid)+''
if @skillid<=0 and @categoryid>=0
set @whereSQL =@whereSQL +' and dbo.Skills.categoryid='+STR(@categoryid)+''
    
    
IF @pageindex = 1
BEGIN
    
SET @strSQL ='SELECT DISTINCT TOP '+ STR(@pagesize) + '  dbo.Users.id, dbo.Users.name, dbo.Users.nickname,dbo.Users.xuehao
FROM    dbo.Myskills INNER JOIN
            dbo.Skills ON dbo.Myskills.sid = dbo.Skills.id INNER JOIN
            dbo.Users ON dbo.Myskills.uid = dbo.Users.id
            '+ Convert(varchar,@whereSQL) + ''--有@wheresql的都修改一下
    
end
ELSE
BEGIN
SET @strSQL ='SELECT DISTINCT TOP '+ STR(@pagesize) + '  dbo.Users.id, dbo.Users.name, dbo.Users.nickname,dbo.Users.xuehao
FROM    dbo.Myskills INNER JOIN
            dbo.Skills ON dbo.Myskills.sid = dbo.Skills.id INNER JOIN
            dbo.Users ON dbo.Myskills.uid = dbo.Users.id
            '+ Convert(varchar,@whereSQL) + ' and dbo.Users.id >(SELECT ISNULL(MAX([id]),0) FROM (SELECT TOP '+STR((@pageindex-1)*@pagesize)+' id FROM [User] '+ Convert(varchar,@whereSQL) + ' ORDER BY id) as A) ORDER by dbo.Users.id desc '
end
select @strSQL
EXEC(@strSQL)
GO

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