目前知道的此sp_MSforeachtable
这个系统存储过程有7个参数:
@command1 nvarchar(2000), --第一条运行的T-SQL指令
@replacechar nchar(1) = N'?', --指定的占位符号
@command2 nvarchar(2000) = null, --第二条运行的T-SQL指令
@command3 nvarchar(2000) = null, --第三条运行的T-SQL指令
@whereand nvarchar(2000) = null, --可选条件来选择表
@precommand nvarchar(2000) = null, --在表前执行的指令
@postcommand nvarchar(2000) = null --在表后执行的指令
使用示例:--1.获得每个表的记录数和容量:
EXEC sp_MSforeachtable @command1="print '?'",
@command2="sp_spaceused '?'",
@command3= "SELECT count(*) FROM ? "--2.更新PUBS数据库中已t开头的所有表的统计:
EXEC sp_MSforeachtable @whereand='and name like ''t%''',
@replacechar='*',
@precommand='print ''Updating Statistics.....''',
@command1='print ''*'' update statistics * ',
@postcommand= 'print ''Complete Update Statistics!'''
这个系统存储过程有7个参数:
@command1 nvarchar(2000), --第一条运行的T-SQL指令
@replacechar nchar(1) = N'?', --指定的占位符号
@command2 nvarchar(2000) = null, --第二条运行的T-SQL指令
@command3 nvarchar(2000) = null, --第三条运行的T-SQL指令
@whereand nvarchar(2000) = null, --可选条件来选择表
@precommand nvarchar(2000) = null, --在表前执行的指令
@postcommand nvarchar(2000) = null --在表后执行的指令
使用示例:--1.获得每个表的记录数和容量:
EXEC sp_MSforeachtable @command1="print '?'",
@command2="sp_spaceused '?'",
@command3= "SELECT count(*) FROM ? "--2.更新PUBS数据库中已t开头的所有表的统计:
EXEC sp_MSforeachtable @whereand='and name like ''t%''',
@replacechar='*',
@precommand='print ''Updating Statistics.....''',
@command1='print ''*'' update statistics * ',
@postcommand= 'print ''Complete Update Statistics!'''
sp_MSgetversion
This extended stored procedure can be used to get the current version of
Microsoft SQL Server. To get the current SQL Server version, runEXEC master..sp_MSgetversionNote. A more common way to retrieve the current SQL Server version
(this way provides more information) is to use following SELECT statement:SELECT @@version
xp_dirtree
This extended stored procedure can be used to get a list of all the folders for
the folder named in the xp. To get a list of all the folders in the C:\MSSQL7
folder, run:EXEC master..xp_dirtree 'C:\MSSQL7'
xp_enum_oledb_providers
This extended stored procedure is used to list of all the available OLE DB
providers. It returns Provider Name, Parse Name and Provider Description. To
get a list of all OLE DB providers for your SQL Server, run:EXEC master..xp_enum_oledb_providers
xp_enumcodepages
This extended stored procedure can be used to list of all code pages, character
sets and their description for your SQL Server. To get a list of all code pages
and character sets, run:EXEC master..xp_enumcodepages
xp_enumdsn
This extended stored procedure returns a list of all System DSNs and their
description. To get the list of System DSNs, run:EXEC master..xp_enumdsn
xp_enumerrorlogs
This extended stored procedure returns the list of all error logs with their
last change date. To get the list of error logs, run:EXEC master..xp_enumerrorlogs
xp_enumgroups
This extended stored procedure returns the list of Windows NT groups and
their description. To get the list of the Windows NT groups, run:EXEC master..xp_enumgroups
xp_fileexist
You can use this extended stored procedure to determine whether a particular
file exists on the disk or not.Syntax:EXECUTE xp_fileexist filename [, file_exists INT OUTPUT]For example, to check whether the file boot.ini exists on disk c: or not, run:EXEC master..xp_fileexist 'c:\boot.ini'
xp_fixeddrives
This very useful extended stored procedure returns the list of all hard drives
and the amount of free space in Mb for each hard drive.To see the list of drives, run:EXEC master..xp_fixeddrives
xp_getnetname
This extended stored procedure returns the WINS name of the SQL Server that
you're connected to.To view the name, run:EXEC master..xp_getnetname
xp_readerrorlog
This extended stored procedure returns the content of the errorlog file.
You can find the errorlog file in the C:\MSSQL7\Log directory, by default for
SQL Server 7.0.To see the text of the errorlog file, run:EXEC master..xp_readerrorlog
xp_regdeletekey
This extended stored procedure will delete an entire key from the registry.
You should use it very carefully.Syntax:EXECUTE xp_regdeletekey [@rootkey=]'rootkey',
[@key=]'key'
For example, to delete the key 'SOFTWARE\Test' from 'HKEY_LOCAL_MACHINE', run:EXEC master..xp_regdeletekey
@rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Test'
xp_regdeletevalue
This extended stored procedure will delete a particular value for a key in
the registry. You should use it very carefully.Syntax:EXECUTE xp_regdeletevalue [@rootkey=]'rootkey',
[@key=]'key',
[@value_name=]'value_name'
For example, to delete the value 'TestValue' for the key 'SOFTWARE\Test'
from 'HKEY_LOCAL_MACHINE', run:EXEC master..xp_regdeletevalue
@rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Test',
@value_name='TestValue'
xp_regread
This extended stored procedure is used to read from the registry.Syntax:EXECUTE xp_regread [@rootkey=]'rootkey',
[@key=]'key'
[, [@value_name=]'value_name']
[, [@value=]@value OUTPUT]
For example, to read into the variable @test from the value 'TestValue'
from the key 'SOFTWARE\Test' from the 'HKEY_LOCAL_MACHINE', run:DECLARE @test varchar(20)
EXEC master..xp_regread @rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Test',
@value_name='TestValue',
@value=@test OUTPUT
SELECT @test
xp_regwrite
This extended stored procedure is used to write to the registry.Syntax:EXECUTE xp_regwrite [@rootkey=]'rootkey',
[@key=]'key',
[@value_name=]'value_name',
[@type=]'type',
[@value=]'value'
For example, to write the variable 'Test' to the 'TestValue' value, key
'SOFTWARE\Test', 'HKEY_LOCAL_MACHINE', run:EXEC master..xp_regwrite
@rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Test',
@value_name='TestValue',
@type='REG_SZ',
@value='Test'
xp_subdirs
This extended stored procedure is used to get the list of folders for the
folder named in the xp. In comparison with xp_dirtree, xp_subdirs returns only
those directories whose depth = 1.This is the example:EXEC master..xp_subdirs 'C:\MSSQL7'Note.Keep in mind that these undocumented extended stored procedures are not
officially supported by Microsoft, and that they may not be found in the next
version of SQL Server.
好东西呀