[SQL Server]数据库大小,表大小及行数统计

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- 统计某个表的空间大小, 行数信息
EXEC Your_DB.dbo.sp_spaceused 'dbo.t_log';

-- 统计多个数据库多个表的空间大小, 行数信息
create table tmp_table_space(table_name varchar(50), table_rows int, total_size varchar(20),data_size varchar(20), index_size varchar(20),
unused_size varchar(20), dbname varchar(30));
insert into tmp_table_space(table_name,table_rows,total_size,data_size,index_size,unused_size)
EXEC Your_DB.dbo.sp_spaceused 'dbo.t_log';
insert into tmp_table_space(table_name,table_rows,total_size,data_size,index_size,unused_size)
EXEC Your_DB.dbo.sp_spaceused 'dbo.t_log2';
update tmp_table_space set dbname='AHBZMJ' where dbname is null;

/*************************************************************************
用于查看对应数据库的大小、占用空间以及该数据库中各个系统表、用户表
使用方法：在查询分析器中选择您要查看的数据库，然后运行此代码即可。
**************************************************************************/
----新建一个表spt_result_table存储数据库中各个表的空间信息
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[spt_result_table]')
              and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[spt_result_table]
GO

create table spt_result_table
(
    tablename       varchar(776)      null, ----表名
    rows varchar(776)      null, ----表中现有的行数
    reserved varchar(776)      null, ----为表保留的空间总量
    data varchar(776)      null, ----表中的数据所使用的空间量
    indexp varchar(776)      null, ----表中的索引所使用的空间量
    unused varchar(776)      null   ----表中未用的空间量
)ON [PRIMARY]
GO

----创建存储过程prc_database_spaceused：计算数据库大小及各个表占用空间的情况
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[prc_database_spaceused]')
           and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[prc_database_spaceused]
GO

create procedure prc_database_spaceused
as

BEGIN
    declare @id                 int
    declare @type         character(2)
    declare @pages         int
    declare @dbname             sysname           ----数据库名
    declare @dbsize             dec(15,0)         ----数据库大小
    declare @logsize            dec(15)
    declare @bytesperpage dec(15,0)
    declare @pagesperMB dec(15,0)
    declare @objname            varchar(776)       ----记录表名

    declare @database_size       varchar(776)
    declare @unallocated_space   varchar(776)
    select @dbname = db_name()                   ----数据库为当前数据库
    create table #spt_space
    (
    rows int     null,
    reserved dec(15) null,         ----保留的空间总量
    data dec(15) null,         ----数据使用的空间总量
    indexp dec(15) null,         ----索引使用的空间
    unused dec(15) null          ----未用的空间量
    )

    ---- 计算数据大小(以kB页为单位)
    select @dbsize = sum(convert(dec(15),size))
    from    dbo.sysfiles
    where   (status & 64 = 0)

    ---- 计算日志大小(以kB页为单位)
    select @logsize = sum(convert(dec(15),size))
    from    dbo.sysfiles
    where   (status & 64 <> 0)

    ---- 求得一个page有多少bytes
    select @bytesperpage = low
    from    master.dbo.spt_values
    where   number = 1 and type = 'E'

    ---- 计算MB占多少page（MB = 1048576B）
    select @pagesperMB = 1048576 / @bytesperpage

    ---- 计算数据库大小
    set @database_size   = ltrim(str((@dbsize + @logsize) / @pagesperMB,15,2) + ' MB')

    ---- 计算未用的空间量的大小
    set     @unallocated_space   = ltrim(str((@dbsize -
                (select sum(convert(dec(15),reserved))
         from sysindexes
         where indid in (0, 1, 255)
                 )) / @pagesperMB,15,2)+ ' MB')

    ---- 保留的空间总量
    insert into #spt_space (reserved)
    select sum(convert(dec(15),reserved))
    from   sysindexes
    where indid in (0, 1, 255)

    select @pages = sum(convert(dec(15),dpages))
    from   sysindexes
    where indid < 2

    select @pages = @pages + isnull(sum(convert(dec(15),used)), 0)
    from   sysindexes
    where indid = 255

    ---- 数据使用的空间总量
    update #spt_space
    set    data = @pages

    ---- 索引使用的空间
    update #spt_space
    set    indexp = (select sum(convert(dec(15),used))
                     from   sysindexes
                     where indid in (0, 1, 255))- data

    ---- 未用的空间量
    update #spt_space
    set    unused = reserved - (select sum(convert(dec(15),used))
            from   sysindexes
            where indid in (0, 1, 255))
    ---- 输出数据库大小信息
    select
        database_name     = @dbname,
        database_size     = @database_size,
        unallocated_space = @unallocated_space,
        reserved          = ltrim(str(reserved * d.low / 1024.,15,0) + ' ' + 'KB'),
        data              = ltrim(str(data * d.low / 1024.,15,0) + ' ' + 'KB'),
        index_size        = ltrim(str(indexp * d.low / 1024.,15,0) + ' ' + 'KB'),
        unused            = 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'

    ---- 清空临时表#spt_space
    delete from #spt_space

    -----定义游标，计算表大小信息
    declare cur_table cursor for
    select   name
    from     sysobjects
    where    xtype = 'U' or xtype = 'S'
    order    by xtype asc

    -----打开游标
    open     cur_table
    fetch    next from cur_table   into @objname
    while    (@@fetch_status = 0)
    begin

    select @id = null
    select @id = id,
           @type = xtype
    from   sysobjects
    where id = object_id(@objname)

    --dbcc updateusage(0,@objname) with no_infomsgs

    insert into #spt_space (reserved)
    select 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

    update #spt_space
    set    indexp = (select sum(used)
    from   sysindexes
    where indid in (0, 1, 255)
    and    id = @id) - data

    update #spt_space
    set    unused = reserved - (select sum(used)
        from   sysindexes
        where indid in (0, 1, 255)
        and    id = @id)

    update #spt_space
    set    rows = i.rows
    from   sysindexes i
    where i.indid < 2
    and    i.id = @id

    insert into spt_result_table
    select tablename = object_name(@id),
           rows = convert(char(11), rows),
           reserved = ltrim(str(reserved * d.low / 1024.,15,0) + ' ' + 'KB'),
           data = ltrim(str(data * d.low / 1024.,15,0) + ' ' + 'KB'),
           index_size = ltrim(str(indexp * d.low / 1024.,15,0) + ' ' + 'KB'),
           unused = 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'

    truncate table #spt_space

    fetch   next from cur_table   into @objname
    end
    close        cur_table
    deallocate   cur_table

    select * from spt_result_table where tablename is not null;
    drop table #spt_space
END
GO

exec prc_database_spaceused

---- 删除spt_result_table表
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[spt_result_table]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[spt_result_table]
GO

---- 删除存储过程prc_database_spaceused
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[prc_database_spaceused]')
           and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[prc_database_spaceused]
GO

http://blog.csdn.net/xiaoxu0123/archive/2010/12/23/6094755.aspx

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