----------------------------
--dbcc page内容解释
--author:boyi55
----------------------------
dbcc page ( {'dbname' | dbid}, filenum, pagenum [, printopt={0|1|2|3} ])
The printopt parameter has the following meanings:
-
0 - print just the page header
-
1 - page header plus per-row hex dumps and a dump of the page slot array (unless its a page that doesn't have one, like allocation bitmaps)
-
2 - page header plus whole page hex dump
-
3 - page header plus detailed per-row interpretation
=========================
dbcc traceon(3604)
dbcc page(northwind,1,100,1)
go
=========================
数据文件的页面结构（管理页面 比较重要）
0 文件头页面 1 PFS 页 面 2 GAM 页面 3 SGAM 页面 6 DCM 页面 7 BCM 页面
一个GAM 和一个SGAM 可以管理4GB 的数据空间
dbcc page(northwind,1,100,1)
go
=========================
数据文件的页面结构（管理页面 比较重要）
0 文件头页面 1 PFS 页 面 2 GAM 页面 3 SGAM 页面 6 DCM 页面 7 BCM 页面
一个GAM 和一个SGAM 可以管理4GB 的数据空间
==========================
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
PAGE: (1:100)
-------------
-------------
BUFFER:
-------
内存中页面的管理信息
-------
内存中页面的管理信息
BUF @0x19217B80-- 内存中页号
---------------
bpage = 0x19A3C000 （对应物理 页面 ） bhash = 0x00000000 （hash ） bpageno = (1:100) （对应物理文件的页面号 ）
bdbid = 6 ( 对应的数据库ID ） breferences = 0 bstat = 0x9
bspin = 0 bnext = 0x00000000
---------------
bpage = 0x19A3C000 （对应物理 页面 ） bhash = 0x00000000 （hash ） bpageno = (1:100) （对应物理文件的页面号 ）
bdbid = 6 ( 对应的数据库ID ） breferences = 0 bstat = 0x9
bspin = 0 bnext = 0x00000000
PAGE HEADER:
------------
页头：96 字节
Page @0x19A3C000
----------------
m_pageId = (1:100) （页号 ） m_headerVersion = 1 m_type = 1 （数据页类型，1：堆表和聚集索引的叶子节点数据）
m_typeFlagBits = 0x0 m_level = 0 （索引级别 ） m_flagBits = 0x8000
m_objId = 2041058307 （对应表ID ） m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 8 （页面中数据的行数，八行 ）
m_freeCnt = 7504 （空余空间 ） m_freeData = 672 （空余空间偏 移量，已用空间数 ） m_reservedCnt = 0
m_lsn = (4:270:16) m_xactReserved = 0 m_xdesId = (0:0)
m_ghostRecCnt = 0 m_tornBits = 1
------------
页头：96 字节
Page @0x19A3C000
----------------
m_pageId = (1:100) （页号 ） m_headerVersion = 1 m_type = 1 （数据页类型，1：堆表和聚集索引的叶子节点数据）
m_typeFlagBits = 0x0 m_level = 0 （索引级别 ） m_flagBits = 0x8000
m_objId = 2041058307 （对应表ID ） m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 8 （页面中数据的行数，八行 ）
m_freeCnt = 7504 （空余空间 ） m_freeData = 672 （空余空间偏 移量，已用空间数 ） m_reservedCnt = 0
m_lsn = (4:270:16) m_xactReserved = 0 m_xdesId = (0:0)
m_ghostRecCnt = 0 m_tornBits = 1
Allocation Status
-----------------
GAM (1:2) = ALLOCATED （管理盘区位于第三个页面编号2 ） SGAM (1:3) = ALLOCATED （管理混合盘区位于第四个页面编号是三 ）
PFS (1:1) = 0x60 MIXED_EXT ALLOCATED 0_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED （管理盘区位于第三个页面编号2 ） SGAM (1:3) = ALLOCATED （管理混合盘区位于第四个页面编号是三 ）
PFS (1:1) = 0x60 MIXED_EXT ALLOCATED 0_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
DATA:
-----
-----
Slot 0, Offset 0x60
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c060: 00080030 00000001 03000004 35002500 0............%.5
19a3c070: 42804580 76006500 72006500 67006100 .E.B.e.v.e.r.a.g
19a3c080: 73006500 87000000 00000000 00005f00 .e.s........._..
19a3c090: 01000100 88000000 00000000 00005f00 ............._..
19a3c0a0: 03000100 00 .....
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c060: 00080030 00000001 03000004 35002500 0............%.5
19a3c070: 42804580 76006500 72006500 67006100 .E.B.e.v.e.r.a.g
19a3c080: 73006500 87000000 00000000 00005f00 .e.s........._..
19a3c090: 01000100 88000000 00000000 00005f00 ............._..
19a3c0a0: 03000100 00 .....
Slot 1, Offset 0xa5
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c0a5: 00080030 00000002 03000004 37002700 0............'.7
19a3c0b5: 43804780 6e006f00 69006400 65006d00 .G.C.o.n.d.i.m.e
19a3c0c5: 74006e00 00007300 00008900 5f000000 .n.t.s........._
19a3c0d5: 01000000 00000500 00008a00 5f000000 ..............._
19a3c0e5: 01000000 000700 .......
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c0a5: 00080030 00000002 03000004 37002700 0............'.7
19a3c0b5: 43804780 6e006f00 69006400 65006d00 .G.C.o.n.d.i.m.e
19a3c0c5: 74006e00 00007300 00008900 5f000000 .n.t.s........._
19a3c0d5: 01000000 00000500 00008a00 5f000000 ..............._
19a3c0e5: 01000000 000700 .......
Slot 2, Offset 0xec
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c0ec: 00080030 00000003 03000004 39002900 0............).9
19a3c0fc: 43804980 6e006f00 65006600 74006300 .I.C.o.n.f.e.c.t
19a3c10c: 6f006900 73006e00 8b000000 00000000 .i.o.n.s........
19a3c11c: 00005f00 09000100 8c000000 00000000 ._..............
19a3c12c: 00006900 01000100 00 .i.......
-------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c0ec: 00080030 00000003 03000004 39002900 0............).9
19a3c0fc: 43804980 6e006f00 65006600 74006300 .I.C.o.n.f.e.c.t
19a3c10c: 6f006900 73006e00 8b000000 00000000 .i.o.n.s........
19a3c11c: 00005f00 09000100 8c000000 00000000 ._..............
19a3c12c: 00006900 01000100 00 .i.......
Slot 3, Offset 0x135
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c135: 00080030 00000004 03000004 3f002f00 0............/.?
19a3c145: 44804f80 69006100 79007200 50002000 .O.D.a.i.r.y. .P
19a3c155: 6f007200 75006400 74006300 00007300 .r.o.d.u.c.t.s..
19a3c165: 00008d00 5f000000 01000000 00000a00 ......._........
19a3c175: 00008e00 5f000000 01000000 000b00 ......._.......
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c135: 00080030 00000004 03000004 3f002f00 0............/.?
19a3c145: 44804f80 69006100 79007200 50002000 .O.D.a.i.r.y. .P
19a3c155: 6f007200 75006400 74006300 00007300 .r.o.d.u.c.t.s..
19a3c165: 00008d00 5f000000 01000000 00000a00 ......._........
19a3c175: 00008e00 5f000000 01000000 000b00 ......._.......
Slot 4, Offset 0x184
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c184: 00080030 00000005 03000004 3f002f00 0............/.?
19a3c194: 47804f80 61007200 6e006900 2f007300 .O.G.r.a.i.n.s./
19a3c1a4: 65004300 65007200 6c006100 00007300 .C.e.r.e.a.l.s..
19a3c1b4: 00008f00 5f000000 01000000 00000c00 ......._........
19a3c1c4: 00009000 6c000000 01000000 000100 .......l.......
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c184: 00080030 00000005 03000004 3f002f00 0............/.?
19a3c194: 47804f80 61007200 6e006900 2f007300 .O.G.r.a.i.n.s./
19a3c1a4: 65004300 65007200 6c006100 00007300 .C.e.r.e.a.l.s..
19a3c1b4: 00008f00 5f000000 01000000 00000c00 ......._........
19a3c1c4: 00009000 6c000000 01000000 000100 .......l.......
Slot 5, Offset 0x1d3
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c1d3: 00080030 00000006 03000004 3b002b00 0............+.;
19a3c1e3: 4d804b80 61006500 2f007400 6f005000 .K.M.e.a.t./.P.o
19a3c1f3: 6c007500 72007400 00007900 00009100 .u.l.t.r.y......
19a3c203: 69000000 01000000 00000400 00009200 ...i............
19a3c213: 69000000 01000000 000500 ...i.......
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c1d3: 00080030 00000006 03000004 3b002b00 0............+.;
19a3c1e3: 4d804b80 61006500 2f007400 6f005000 .K.M.e.a.t./.P.o
19a3c1f3: 6c007500 72007400 00007900 00009100 .u.l.t.r.y......
19a3c203: 69000000 01000000 00000400 00009200 ...i............
19a3c213: 69000000 01000000 000500 ...i.......
Slot 6, Offset 0x21e
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c21e: 00080030 00000007 03000004 31002100 0............!.1
19a3c22e: 50804180 6f007200 75006400 65006300 .A.P.r.o.d.u.c.e
19a3c23e: 93000000 00000000 00006900 06000100 .........i......
19a3c24e: 94000000 00000000 00007200 01000100 .........r......
19a3c25e: 00 .
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c21e: 00080030 00000007 03000004 31002100 0............!.1
19a3c22e: 50804180 6f007200 75006400 65006300 .A.P.r.o.d.u.c.e
19a3c23e: 93000000 00000000 00006900 06000100 .........i......
19a3c24e: 94000000 00000000 00007200 01000100 .........r......
19a3c25e: 00 .
Slot 7, Offset 0x25f
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c25f: 00080030 00000008 03000004 31002100 0............!.1
19a3c26f: 53804180 61006500 6f006600 64006f00 .A.S.e.a.f.o.o.d
19a3c27f: 95000000 00000000 00006900 07000100 .........i......
19a3c28f: 96000000 00000000 00006900 08000100 .........i......
19a3c29f: 00 .
--------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19a3c25f: 00080030 00000008 03000004 31002100 0............!.1
19a3c26f: 53804180 61006500 6f006600 64006f00 .A.S.e.a.f.o.o.d
19a3c27f: 95000000 00000000 00006900 07000100 .........i......
19a3c28f: 96000000 00000000 00006900 08000100 .........i......
19a3c29f: 00 .
OFFSET TABLE:
-------------
Row - Offset 96 （页头）+ （672-96 ）（数据空间）+7504 （空余空间）+16 （行偏移指针数组）=8192 （页面大小）
8190-8191 slot0
...
... 行偏移数组
8176-8177 slot7
672-8175 空余空间
7 (0x7) - 607 (0x25f) 607-671
6 (0x6) - 542 (0x21e) 542-606
5 (0x5) - 467 (0x1d3) 467-541
4 (0x4) - 388 (0x184) 388-466
3 (0x3) - 309 (0x135) 309-387
2 (0x2) - 236 (0xec) 236-308
1 (0x1) - 165 (0xa5) 165-235
0 (0x0) - 96 (0x60) 96-164
0-95 pageheader
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
============================================
-------------
Row - Offset 96 （页头）+ （672-96 ）（数据空间）+7504 （空余空间）+16 （行偏移指针数组）=8192 （页面大小）
8190-8191 slot0
...
... 行偏移数组
8176-8177 slot7
672-8175 空余空间
7 (0x7) - 607 (0x25f) 607-671
6 (0x6) - 542 (0x21e) 542-606
5 (0x5) - 467 (0x1d3) 467-541
4 (0x4) - 388 (0x184) 388-466
3 (0x3) - 309 (0x135) 309-387
2 (0x2) - 236 (0xec) 236-308
1 (0x1) - 165 (0xa5) 165-235
0 (0x0) - 96 (0x60) 96-164
0-95 pageheader
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
============================================
create table demodb1..table10(
id int not null,
name char(5) not null,
address char(10) null)
id int not null,
name char(5) not null,
address char(10) null)
select * from demodb1..sysindexes
where id=object_id('demodb1..table10')
============================================
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------
1977058079 0 0x000000000000 0 0x000000000000 23 0 1 0 0 0 0 0 0 0 40 0 0 0 0 0x000000000000 -1 0 0 NULL table10 NULL 8000 0
无数据 first 为指向第一列或者根页的指针。
where id=object_id('demodb1..table10')
============================================
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------
1977058079 0 0x000000000000 0 0x000000000000 23 0 1 0 0 0 0 0 0 0 40 0 0 0 0 0x000000000000 -1 0 0 NULL table10 NULL 8000 0
无数据 first 为指向第一列或者根页的指针。
=============================================
insert into demodb1..table10(id,name,address)values(1,'abcde','suzhou')
=================================
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------ ------
1977058079 0 0x0F0000000100 0 0x0F0000000100 23 0 1 1 2 2 1 1 0 0 40 0 0 0 0 0x190000000100 -1 0 0 NULL table10 NULL 8000 1
=================================
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------ ------
1977058079 0 0x0F0000000100 0 0x0F0000000100 23 0 1 1 2 2 1 1 0 0 40 0 0 0 0 0x190000000100 -1 0 0 NULL table10 NULL 8000 1
first 0x0F 编号十五页
=================================
create table table11(id int,name text)
create table table11(id int,name text)
select * from demodb1..sysindexes
where id=object_id('demodb1..table11')
where id=object_id('demodb1..table11')
insert into demodb1..table11 values(1,'boyi55')
=================================
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------
1993058136 0 0x1E0000000100 0 0x1E0000000100 8 0 1 1 2 2 1 1 0 0 43 0 0 0 0 0x1F0000000100 -1 0 0 NULL table11 NULL 8000 1
1993058136 2 0x1C0000000100 255 0x1C0000000100 0 0 1 0 2 2 0 0 0 0 0 0 0 0 0 0x1D0000000100 -1 0 0 NULL ttable11 NULL 8000 0
first 0x1E 编号三十页
first 0x1C 编号二十八页
id status first indid root minlen keycnt groupid dpages reserved used rowcnt rowmodctr reserved3 reserved4 xmaxlen maxirow OrigFillFactor StatVersion reserved2 FirstIAM impid lockflags pgmodctr keys name statblob maxlen rows
----------- ----------- -------------- ------ -------------- ------
1993058136 0 0x1E0000000100 0 0x1E0000000100 8 0 1 1 2 2 1 1 0 0 43 0 0 0 0 0x1F0000000100 -1 0 0 NULL table11 NULL 8000 1
1993058136 2 0x1C0000000100 255 0x1C0000000100 0 0 1 0 2 2 0 0 0 0 0 0 0 0 0 0x1D0000000100 -1 0 0 NULL ttable11 NULL 8000 0
first 0x1E 编号三十页
first 0x1C 编号二十八页
=====================
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
PAGE: (1:30)
------------
------------
BUFFER:
-------
-------
BUF @0x192192C0
---------------
bpage = 0x19AF6000 bhash = 0x00000000 bpageno = (1:30)
bdbid = 7 breferences = 1 bstat = 0xb
bspin = 0 bnext = 0x00000000
---------------
bpage = 0x19AF6000 bhash = 0x00000000 bpageno = (1:30)
bdbid = 7 breferences = 1 bstat = 0xb
bspin = 0 bnext = 0x00000000
PAGE HEADER:
------------
------------
Page @0x19AF6000
----------------
m_pageId = (1:30) m_headerVersion = 1 m_type = 1
m_typeFlagBits = 0x0 m_level = 0 m_flagBits = 0x8000
m_objId = 1993058136 m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 1
m_freeCnt = 8063 m_freeData = 127 m_reservedCnt = 0
m_lsn = (5:49:1) m_xactReserved = 0 m_xdesId = (0:0)
m_ghostRecCnt = 0 m_tornBits = 0
----------------
m_pageId = (1:30) m_headerVersion = 1 m_type = 1
m_typeFlagBits = 0x0 m_level = 0 m_flagBits = 0x8000
m_objId = 1993058136 m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 1
m_freeCnt = 8063 m_freeData = 127 m_reservedCnt = 0
m_lsn = (5:49:1) m_xactReserved = 0 m_xdesId = (0:0)
m_ghostRecCnt = 0 m_tornBits = 0
Allocation Status
-----------------
GAM (1:2) = ALLOCATED SGAM (1:3) = ALLOCATED
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED 50_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED SGAM (1:3) = ALLOCATED
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED 50_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
Slot 0 Offset 0x60
------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19af6060: 00080030 00000001 01000002 00801f00 0...............
19af6070: 0000c900 1c000000 01000000 000000 ...............
id = 1
------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19af6060: 00080030 00000001 01000002 00801f00 0...............
19af6070: 0000c900 1c000000 01000000 000000 ...............
id = 1
name = [TextPointer]
------------------------------------------------
TextTimeStamp = 13172736 RowId = (1:28:0)
指针指向页号28.
------------------------------------------------
TextTimeStamp = 13172736 RowId = (1:28:0)
指针指向页号28.
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
==============================
sp_tableoption table11,'text in row',1000
==============================
sp_tableoption table11,'text in row',1000
update table11 set name='boyi55555' where id =1
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
PAGE: (1:30)
------------
------------
BUFFER:
-------
-------
BUF @0x192192C0
---------------
bpage = 0x19AF6000 bhash = 0x00000000 bpageno = (1:30)
bdbid = 7 breferences = 4 bstat = 0xb
bspin = 0 bnext = 0x00000000
---------------
bpage = 0x19AF6000 bhash = 0x00000000 bpageno = (1:30)
bdbid = 7 breferences = 4 bstat = 0xb
bspin = 0 bnext = 0x00000000
PAGE HEADER:
------------
------------
Page @0x19AF6000
----------------
m_pageId = (1:30) m_headerVersion = 1 m_type = 1
m_typeFlagBits = 0x0 m_level = 0 m_flagBits = 0x8000
m_objId = 1993058136 m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 1
m_freeCnt = 8070 m_freeData = 127 m_reservedCnt = 7
m_lsn = (5:52:5) m_xactReserved = 7 m_xdesId = (0:188)
m_ghostRecCnt = 0 m_tornBits = 0
----------------
m_pageId = (1:30) m_headerVersion = 1 m_type = 1
m_typeFlagBits = 0x0 m_level = 0 m_flagBits = 0x8000
m_objId = 1993058136 m_indexId = 0 m_prevPage = (0:0)
m_nextPage = (0:0) pminlen = 8 m_slotCnt = 1
m_freeCnt = 8070 m_freeData = 127 m_reservedCnt = 7
m_lsn = (5:52:5) m_xactReserved = 7 m_xdesId = (0:188)
m_ghostRecCnt = 0 m_tornBits = 0
Allocation Status
-----------------
GAM (1:2) = ALLOCATED SGAM (1:3) = ALLOCATED
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED 50_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
-----------------
GAM (1:2) = ALLOCATED SGAM (1:3) = ALLOCATED
PFS (1:1) = 0x61 MIXED_EXT ALLOCATED 50_PCT_FULL DIFF (1:6) = CHANGED
ML (1:7) = NOT MIN_LOGGED
Slot 0 Offset 0x60
------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19af6060: 00080030 00000001 01000002 62001800 0..............b
19af6070: 3569796f 35353535 oyi55555
id = 1
********************************************************
name = [BLOB Inline Data]
-----------------------------------------------------
19af606f: 69796f62 35353535 35 boyi55555
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
------------------
Record Type = PRIMARY_RECORD
Record Attributes = NULL_BITMAP VARIABLE_COLUMNS
19af6060: 00080030 00000001 01000002 62001800 0..............b
19af6070: 3569796f 35353535 oyi55555
id = 1
********************************************************
name = [BLOB Inline Data]
-----------------------------------------------------
19af606f: 69796f62 35353535 35 boyi55555
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
=============================================
DBCC EXTENTINFO 得到属于一个对象的所有盘区的列表
dbcc traceon(3604)
dbcc extentinfo(northwind,categories)
DBCC EXTENTINFO 得到属于一个对象的所有盘区的列表
dbcc traceon(3604)
dbcc extentinfo(northwind,categories)
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
file_id page_id pg_alloc ext_size obj_id index_id pfs_bytes
----------- ----------- ----------- ----------- ----------- ----------- ------------------
1 98 1 1 2041058307 1 0x6000000000000000
1 100 1 1 2041058307 1 0x6000000000000000
1 389 1 1 2041058307 2 0x6000000000000000
1 95 1 1 2041058307 255 0x6200000000000000
1 97 1 1 2041058307 255 0x6400000000000000
1 103 1 1 2041058307 255 0x6400000000000000
1 104 1 1 2041058307 255 0x6400000000000000
1 105 1 1 2041058307 255 0x6200000000000000
1 106 1 1 2041058307 255 0x6400000000000000
1 107 1 1 2041058307 255 0x6400000000000000
1 108 1 1 2041058307 255 0x6200000000000000
1 112 4 8 2041058307 255 0x4444424400000000
（所影响的行数为 12 行）
DBCC 执行完毕。如果 DBCC 输出了错误信息，请与系统管理员联系。
page_id 对应于obj_id
dbcc traceon(3604)
dbcc extentinfo(northwind)
用法：DBCC EXTENTINFO(dbname,tablename,indexid)
from csdn http://blog.csdn.net/laohan8848/archive/2010/05/25/5622166.aspx
