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一些有用西查询语句(关于系统表的使用)
作者:武汉SEO闵涛  文章来源:敏韬网  点击数4297  更新时间:2009/4/22 23:09:45  文章录入:mintao  责任编辑:mintao
p;                        and d.number = 1
                                        and d.type = "E"
        end
        else
        begin

                select name = o.name,
                        low = d.low,
                        rowtotal = rowcnt(i.doampg),
                        reserved = convert(numeric(20,9),
                                (reserved_pgs(i.id, i.doampg) +
                                reserved_pgs(i.id, i.ioampg))),
                        data = convert(numeric(20,9),data_pgs(i.id, i.doampg)),
                        index_size =  convert(numeric(20,9),
                                data_pgs(i.id, i.ioampg)),
                        unused = convert(numeric(20,9), 
                                ((reserved_pgs(i.id, i.doampg) +
                                reserved_pgs(i.id, i.ioampg)) -
                                (data_pgs(i.id, i.doampg) +
                                data_pgs(i.id, i.ioampg))))
                into #pagecounts
                from sysobjects o, sysindexes i, master.dbo.spt_values d,
                        #objlist
                                where i.id = #objlist.id
                                        and o.id = #objlist.id
                                        and d.number = 1
                                        and d.type = "E"

            select @length = max(datalength(name))
                from #pagecounts

            if (@length > 20)
                select distinct name,
                    rowtotal = convert(char(11), sum(rowtotal)),
                    reserved = convert(char(10), convert(varchar(11),
                               convert(numeric(11,0),sum(reserved) / 1024 * 
                               low)) + " " + "KB"),
                    data = convert(char(10), convert(varchar(11),
                               convert(numeric(11,0),sum(data) / 1024 * low))
                               + " " + "KB"),
                    index_size = convert(char(10), convert(varchar(11),
                                convert(numeric(11,0),sum(index_size) / 1024 *
                                low)) + " " + "KB"),
                    unused = convert(char(10), convert(varchar(11),
                                convert(numeric(11,0), sum(unused) / 1024 *
                                low)) + " " + "KB")
                from #pagecounts
                group by name
            else
                select distinct name = convert(char(20), name),
                    rowtotal = convert(char(11), sum(rowtotal)),
                    reserved = convert(char(10), convert(varchar(11),
                               convert(numeric(11,0),sum(reserved) / 1024 * 
                               low)) + " " + "KB"),
                 &nbs

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