Tuesday, December 09, 2008

http://weblogs.sqlteam.com/jeffs/archive/2004/03/22/1085.aspx

CREATE PROCEDURE ReturnPage(@Select varchar(1000), @OrderBy varchar(1000),

@StartRow int, @EndRow int)

AS

BEGIN



declare @ColList varchar(2000);

declare @Where varchar(2000);

declare @i int;

declare @i2 int;

declare @tmp varchar(1000);

declare @dec varchar(1000);

declare @f varchar(100);

declare @d varchar(100);

declare @Symbol char(2);

declare @SQL varchar(5000);

declare @Sort varchar(1000);



set @Sort = @OrderBy + ', '

set @dec = ''

set @Where = ''

set @SQL = ''



set @i = charindex(',' , @Sort)

while @i != 0

begin

set @tmp = left(@Sort,@i-1)

set @i2 = charindex(' ', @tmp)

set @f = ltrim(rtrim(left(@tmp,@i2-1)))

set @d = ltrim(rtrim(substring(@tmp,@i2+1,100)))

set @Sort = rtrim(ltrim(substring(@Sort,@i+1,100)))

set @i = charindex(',', @Sort)

set @symbol = case when @d = 'ASC' then '>' else '<' end +

case when @i=0 then '=' else '' end



set @dec = @dec + 'declare @' + @f + ' sql_variant; '

set @ColList = isnull(replace(replace(@colList,'>','='),'<','=') + ' and ','') +

@f + @Symbol + ' @' + @f

set @Where = @Where + ' OR (' + @ColList + ') '

set @SQL = @SQL + ', @' + @f + '= ' + @f

end



set @SQL = @dec + ' ' +

'SET ROWCOUNT ' + convert(varchar(10), @StartRow) + '; ' +

'SELECT ' + substring(@SQL,3,7000) + ' from (' + @Select + ') a ORDER BY ' +

@OrderBy + '; ' + 'SET ROWCOUNT ' +

convert(varchar(10), 1 + @EndRow - @StartRow) + '; ' +

'select * from (' + @Select + ') a WHERE ' +

substring(@Where,4,7000) + ' ORDER BY ' + @OrderBy + '; SET ROWCOUNT 0;'



exec(@SQL)

END

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