select datalength(保存圖片的欄位名) from 表 where 條件
❷ sqlserver資料庫文件大小
第一種方法(較簡單，看的有些吃力)：
exec sp_MSforeachtable "exec sp_spaceused '?'"
第二種方法(較復雜，但看的比較清楚，原作者不詳)：
if not exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[tablespaceinfo]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
create table tablespaceinfo --創建結果存儲表
(nameinfo varchar(50) ,
rowsinfo int , reserved varchar(20) ,
datainfo varchar(20) ,
index_size varchar(20) ,
unused varchar(20) )
delete from tablespaceinfo --清空數據表
declare @tablename varchar(255) --表名稱
declare @cmdsql varchar(500)
DECLARE Info_cursor CURSOR FOR
select o.name
from dbo.sysobjects o where OBJECTPROPERTY(o.id, N'IsTable') = 1
and o.name not like N'#%%' order by o.name
OPEN Info_cursor
FETCH NEXT FROM Info_cursor
INTO @tablename
WHILE @@FETCH_STATUS = 0
BEGIN
if exists (select * from dbo.sysobjects where id = object_id(@tablename) and OBJECTPROPERTY(id, N'IsUserTable') = 1)
execute sp_executesql
N'insert into tablespaceinfo exec sp_spaceused @tbname',
N'@tbname varchar(255)',
@tbname = @tablename
FETCH NEXT FROM Info_cursor
INTO @tablename
END
CLOSE Info_cursor
DEALLOCATE Info_cursor
GO
--itlearner註：顯示資料庫信息
sp_spaceused @updateusage = 'TRUE'
--itlearner註：顯示表信息
select *
from tablespaceinfo
order by cast(left(ltrim(rtrim(reserved)) , len(ltrim(rtrim(reserved)))-2) as int) desc
第三種方法：
select object_name(id) tablename,8*reserved/1024 reserved,rtrim(8*dpages/1024)+'Mb' used,8*(reserved-dpages)/1024 unused,8*dpages/1024-rows/1024*minlen/1024 free,
rows,* from sysindexes
where indid=1
order by reserved desc
❸ 如何查看SQLServer資料庫每個表佔用的空間大小
創建存儲過程：
CREATE PROCEDURE [dbo].[sys_viewTableSpace]
AS
BEGIN
SET NOCOUNT ON;
CREATE TABLE [dbo].#tableinfo(
表名 [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
記錄數 [int] NULL,
預留空間 [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
使用空間 [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
索引佔用空間 [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,
未用空間 [varchar](50) COLLATE Chinese_PRC_CI_AS NULL
)
insert into #tableinfo(表名, 記錄數, 預留空間, 使用空間, 索引佔用空間, 未用空間)
exec sp_MSforeachtable "exec sp_spaceused '?'"
select * from #tableinfo
order by 記錄數 desc
drop table #tableinfo
END
使用的時候直接 ：exec sys_viewtablespace
❹ sqlserver，不同資料庫，兩個相同表，表大小差一倍
資料庫的初始大小,以及增長率的區別.
資料庫的文件的大小並不等同於數據的大小,表也是一樣的.
假定原始表,前後累計 insert 一千萬條記錄有,後來刪除了9百萬,然後將剩餘的1百萬導入到 新的表中.
此時,原始表的大小就遠大於新的表.當表空間不夠的時候,他會自動 擴容,當數據減少時,他並不會自動收縮.
❺ sqlserver sql語句 多條件查詢 查詢一個表內 單據號最大的記錄集。
用子查詢吧
select a.門店，b.條碼,c.價格 from (select 門店，max(文件號)文件號 from c group by 門店) c left join a on a.條件=c.條件 left join b on b.條件=c.條件 where c.日期 and c.文件號
❻ 如何查詢sqlserver資料庫中數據的大小
不是很懂你的問題意思，下次提問請描述的更清楚一些；
如果是想知道某一個表佔用了多大空間，你可以用下面的語句
useyourDB
go
sp_spaceusedyourTable
你會得到如下結果，各列分別是：
表名；行數；已佔用空間；數據佔用空間；索引佔用空間；未使用空間；
❼ sqlserver怎麼看錶的大小
select tabname as '表名',rowsNum as '表數據行數',reserved as '保留大小',data as '數據大小',index_size as '索引大小',unused_size as '未使用大小'
from #tabName
--where tabName not like 't%'
order by cast(rowsNum as int) desc
❽ SQLServer表的大小與表占硬碟空間大小有什麼區別，應該怎麼去查這兩項性能
表的大小一般指表的行數，佔用硬碟空間大小就比較復雜了，可以有以下幾個參數：
分配空間，數據佔用空間及索引佔用空間。
執行
EXEC alltablecount
即可顯示當前資料庫所有表資源佔用情況。
執行前，請前建立以下表，和兩個存儲過程：
1、先建立表：HY_SPACE
CREATE TABLE [HY_SPACE] (
[name] [nvarchar] (128) COLLATE Chinese_PRC_CI_AS NULL ,
[rows] [char] (11) COLLATE Chinese_PRC_CI_AS NULL ,
[reserved] [varchar] (18) COLLATE Chinese_PRC_CI_AS NULL ,
[data] [varchar] (18) COLLATE Chinese_PRC_CI_AS NULL ,
[index_size] [varchar] (18) COLLATE Chinese_PRC_CI_AS NULL ,
[unused] [varchar] (18) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
2、建立統計存儲過程：
create procere HYspaceused
@objname nvarchar(776) = null,
@updateusage varchar(5) = false
as
declare @idint
declare @typecharacter(2)
declare@pagesint
declare @dbname sysname
declare @dbsize dec(15,0)
declare @logsize dec(15)
declare @bytesperpagedec(15,0)
declare @pagesperMBdec(15,0)
create table #spt_space
(
rowsint null,
reserveddec(15) null,
datadec(15) null,
indexpdec(15) null,
unuseddec(15) null
)
if @updateusage is not null
begin
select @updateusage=lower(@updateusage)
if @updateusage not in ('true','false')
begin
raiserror(15143,-1,-1,@updateusage)
return(1)
end
end
if @objname IS NOT NULL
begin
select @dbname = parsename(@objname, 3)
if @dbname is not null and @dbname <> db_name()
begin
raiserror(15250,-1,-1)
return (1)
end
if @dbname is null
select @dbname = db_name()
select @id = null
select @id = id, @type = xtype
from sysobjects
where id = object_id(@objname)
if @id is null
begin
raiserror(15009,-1,-1,@objname,@dbname)
return (1)
end
if not exists (select * from sysindexes
where @id = id and indid < 2)
if @type in ('P ','D ','R ','TR','C ','RF')
begin
raiserror(15234,-1,-1)
return (1)
end
else if @type = 'V '
begin
raiserror(15235,-1,-1)
return (1)
end
else if @type in ('PK','UQ')
begin
raiserror(15064,-1,-1)
return (1)
end
else if @type = 'F '
begin
raiserror(15275,-1,-1)
return (1)
end
end
if @updateusage = 'true'
begin
if @objname is null
dbcc updateusage(0) with no_infomsgs
else
dbcc updateusage(0,@objname) with no_infomsgs
print ' '
end
set nocount on
if @id is null
begin
select @dbsize = sum(convert(dec(15),size))
from dbo.sysfiles
where (status & 64 = 0)
select @logsize = sum(convert(dec(15),size))
from dbo.sysfiles
where (status & 64 <> 0)
select @bytesperpage = low
from master.dbo.spt_values
where number = 1
and type = 'E'
select @pagesperMB = 1048576 / @bytesperpage
select database_name = db_name(),
database_size =
ltrim(str((@dbsize + @logsize) / @pagesperMB,15,2) + ' MB'),
'unallocated space' =
ltrim(str((@dbsize -
(select sum(convert(dec(15),reserved))
from sysindexes
where indid in (0, 1, 255)
)) / @pagesperMB,15,2)+ ' MB')
print ' '
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
update #spt_space
set data = @pages
update #spt_space
set indexp = (select sum(convert(dec(15),used))
from sysindexes
where indid in (0, 1, 255))
- data
update #spt_space
set unused = reserved
- (select sum(convert(dec(15),used))
from sysindexes
where indid in (0, 1, 255))
select 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'
end
else
begin
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 HY_SPACE
select name = 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'
RETURN
end
return (0)
GO
3、主存儲過程
create procere alltablecount as
declare @name varchar(100)
TRUNCATE TABLE HY_SPACE
declare tablecur cursor for select name from sysobjects where xtype= 'u '
create table #tablecount(tablename varchar(100),reccount int)
open tablecur
fetch next from tablecur into @name
while @@fetch_status!=-1
begin
exec ('insert into #tablecount select tablename='''+@name+''',reccount=count(1) from '+@name+' ')
EXEC HYspaceused @NAME
fetch next from tablecur into @name
end
close tablecur
deallocate tablecur
select * from #tablecount order by reccount desc
select * from HY_SPACE
GO