zoukankan      html  css  js  c++  java
  • SQL中如何查询各个数据表的大小<轉>

    declare @id            int
    declare @type          character(2)                
    declare @pages         int                       
    declare @dbname        sysname
    declare @dbsize        dec(15,0)
    declare @bytesperpage dec(15,0)
    declare @pagesperMB    dec(15,0)

    create table #spt_space
    (
        [objid]         int null,
        [rows]          int null,
        [reserved]      dec(15) null,
        [data]          dec(15) null,
        [indexp]        dec(15) null,
        [unused]        dec(15) null
    )

    set nocount on

    -- Create a cursor to loop through the user   tables

    declare c_tables cursor for
    select id from sysobjects where xtype = 'U'

    open c_tables fetch next from c_tables into @id

    while @@fetch_status = 0
    begin
        /* Code from sp_spaceused */
        insert into #spt_space (objid, reserved)
        select objid = @id, sum(reserved)
        from sysindexes
        where indid in (0, 1, 255)   and   id = @id
       
       
        select @pages = sum(dpages)
        from sysindexes
        where indid < 2
        and   id = @id
       
        select @pages = @pages + isnull(sum(used), 0)
        from sysindexes
        where indid = 255    and   id = @id
       
        update #spt_space   set data = @pages
        where objid = @id
       
        /* index: sum(used) where indid in (0, 1, 255) - data */
       
        update #spt_space
        set indexp = (select sum(used)
        from sysindexes
        where indid in (0, 1, 255)
        and id = @id) - data
        where objid = @id
       
        /* unused: sum(reserved) - sum(used) where indid in (0, 1, 255) */
        update #spt_space
        set unused = reserved - (
                                    select sum(used)
                                    from sysindexes
                                    where indid in (0, 1, 255) and id = @id
                                )
        where objid = @id
       
        update #spt_space   set [rows] = i.[rows]
        from sysindexes i
        where i.indid < 2   and i.id = @id    and objid = @id
       
        fetch next from c_tables   into @id

    end

    select TableName = (select left(name,60) from sysobjects where id = objid),
            [Rows] = convert(char(11), rows),
            ReservedKB = ltrim(str(reserved * d.low / 1024.,15,0) + ' ' + 'KB'),
            DataKB = ltrim(str(data * d.low / 1024.,15,0) + ' ' + 'KB'),
            IndexSizeKB = ltrim(str(indexp * d.low / 1024.,15,0) + ' ' + 'KB'),
            UnusedKB = ltrim(str(unused * d.low / 1024.,15,0) + ' ' + 'KB')
    from         #spt_space, master.dbo.spt_values d
    where         d.number = 1
    and         d.type = 'E'
    order by reserved desc

    drop table #spt_space
    close c_tables
    deallocate c_tables

     

    如有其它问题请加我的微信:x7993794,请注明“软考”,或加入我群组[软考数据库]微信讨论群
  • 相关阅读:
    APP-5-百度电子围栏
    APP-4-百度地图定位
    洗礼灵魂,修炼python(60)--爬虫篇—httplib2模块
    洗礼灵魂,修炼python(59)--爬虫篇—httplib模块
    洗礼灵魂,修炼python(58)--爬虫篇—【转载】urllib3模块
    洗礼灵魂,修炼python(57)--爬虫篇—知识补充—编码之对比不同python版本获取的数据
    洗礼灵魂,修炼python(56)--爬虫篇—知识补充—编码之url编码
    洗礼灵魂,修炼python(55)--爬虫篇—知识补充—RFC 2616 http状态码
    洗礼灵魂,修炼python(54)--爬虫篇—urllib2模块
    洗礼灵魂,修炼python(53)--爬虫篇—urllib模块
  • 原文地址:https://www.cnblogs.com/fredx/p/2663403.html
Copyright © 2011-2022 走看看