SQL Server 7.0 Useful Undocumented Stored Procedures

April 2, 2001


Introduction


In this article, I want to tell you about some useful undocumented stored procedures shipped with SQL Server 7.0.


sp_columns_rowset
This stored procedure returns the complete columns description, including the length, type, name, and so on. Syntax
sp_columns_rowset tbname [, table_schema ] [, column_name]
where tbname - is the table name. tbname is sysname. table_schema - is the table schema. table_schema is sysname, with a default of NULL. column_name - is the column name. column_name is sysname, with a default of NULL. This is the example:
USE pubs
GO
EXEC sp_columns_rowset 'authors'
GO
sp_fixindex
This stored procedure can be used to fix a corruption in a system table by recreate the index. Syntax
sp_fixindex  database, systemcatalog, ind_id
where database - is the database name. database is sysname. systemcatalog - is the system table name. systemcatalog is sysname. ind_id - is the index id value. ind_id is int Note. Before using this stored procedure the database has to be in single user mode. See this link for more information: "How can I fix a corruption in a system table?" http://www.windows2000faq.com/Articles/Index.cfm?ArticleID=14051 This is the example:
USE pubs
GO
EXEC sp_fixindex pubs, sysindexes, 2
GO
sp_MSexists_file
This stored procedure can be used to determine whether the particular file exists in the particular directory or not. Syntax
sp_MSexists_file full_path, filename
where full_path - is the full path to the file. full_path is nvarchar(512). filename - is the file name. filename is nvarchar(255). To check if file textcopy.exe exists in the C:\MSSQL7\BINN\ directory (path by default), run:
DECLARE @retcode int
EXEC @retcode = sp_MSexists_file 'C:\MSSQL7\BINN\', 'textcopy.exe'
IF @retcode = 1
  PRINT 'File Exist'
ELSE
  PRINT 'File does not Exist'
sp_MSforeachdb
Sometimes, you need to perform the same actions for all databases. You can make cursor for this purpose, but you can also use sp_MSforeachdb stored procedure in this case. You can use this stored procedure to check all databases with DBCC CHECKDB statement:
EXEC sp_MSforeachdb @command1="print '?' DBCC CHECKDB ('?')"
sp_MSforeachtable
Sometimes, you need to perform the same actions for all tables in the database. You can make cursor for this purpose, but you can also use sp_MSforeachtable stored procedure in this case. You can use this stored procedure to rebuild all indexes in your database. Try to schedule it to execute when your server is not very hard work.
EXEC sp_MSforeachtable @command1="print '?' DBCC DBREINDEX ('?')"
sp_MShelpcolumns
This stored procedure returns the complete schema for a table, including the length, type, name, and whether a column is computed. Syntax
sp_MShelpcolumns tablename [, flags] [, orderby] [, flags2]
where tablename - is the table name. tablename is nvarchar(517). flags - flags is int, with a default of 0. orderby - orderby is nvarchar(10), with a default of NULL. flags - flags2 is int, with a default of 0. To get the full columns description for the authors table in the pubs database, run:
USE pubs
GO
EXEC sp_MShelpcolumns 'authors'
GO
sp_MShelpindex
This stored procedure returns information about name, status, fill factor, index columns names, and about used file group for the given table. Syntax
sp_MShelpindex tablename [, indexname] [, flags]
where tablename - is the table name. tablename is nvarchar(517). indexname - is the index name. indexname is nvarchar(258). flags - flags is int, with a default of NULL. To get the indexes description for the authors table in the pubs database, run:
USE pubs
GO
EXEC sp_MShelpindex 'authors'
GO
sp_MShelptype
This stored procedure returns many useful information about system data types and about user data types. Syntax
sp_MShelptype [typename] [, flags]
where typename - is the type name. typename is nvarchar(517), with a default of NULL. flags - flags is nvarchar(10), with a default of NULL. To get information about all built-in and user defined data types in the pubs database, run:
USE pubs
GO
EXEC sp_MShelptype
GO
sp_MSindexspace
This stored procedure returns the size in kb, which the indexes in the particular table use. Syntax
sp_MSindexspace tablename [, index_name]
where tablename - is the table name. tablename is nvarchar(517). index_name - is the index name. index_name is nvarchar(258), with a default of NULL. To determine the space used by the indexes from the authors table in the pubs database, run:
USE pubs
GO
EXEC sp_MSindexspace 'authors'
GO
sp_MSkilldb
This stored procedure sets database to suspect and let dbcc dbrepair to kill it. You should run this sp from the context of the master database. Use it very carefully. Syntax
sp_MSkilldb dbname
where dbname - is the database name. dbname is nvarchar(258). To kill the pubs database, run:
USE master
GO
EXEC sp_MSkilldb 'pubs'
GO
sp_MStablespace
This stored procedure returns the number of rows and the space the table and index use. Syntax
sp_MStablespace [name] [, id]
where name - is the table name. name is nvarchar(517). id - id is int, with a default of NULL. To determine the space used by the authors table in the pubs database, run:
USE pubs
GO
EXEC sp_MStablespace 'authors'
GO
Here is the result set from my machine:
Rows        DataSpaceUsed IndexSpaceUsed
----------- ------------- --------------
23          8             24
sp_tempdbspace
This stored procedure can be used to get the total size and the space used by the tempdb database. You should execute sp_tempdbspace without parameters. Syntax
sp_tempdbspace
This is the example:
EXEC sp_tempdbspace
Here is the result set from my machine:
database_name database_size           spaceused
------------- ----------------------- ---------------------------
tempdb        8.500000                .703125
sp_who2
This stored procedure returns information about current SQL Server 7.0 users and processes as sp_who, but provides more detailed information. sp_who2 returns CPUTime, DiskIO, LastBatch and ProgramName in addition to sp_who. Syntax
sp_who [loginame]
where loginame - the user's login name. If not specified, the procedure reports on all active users of SQL Server. This example returns information for the 'sa' login:
EXEC sp_who2 'sa'


» See All Articles by Columnist Alexander Chigrik









The Network for Technology Professionals

Search:

About Internet.com

Legal Notices, Licensing, Permissions, Privacy Policy.
Advertise | Newsletters | E-mail Offers