Introduction
In this article, I want to tell you about some useful undocumented
stored procedures shipped with SQL Server 7.0.
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
|
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
|
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'
|
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 ('?')"
|
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 ('?')"
|
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
|
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
|
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
|
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
|
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
where
dbname - is the database name. dbname is nvarchar(258).
To kill the pubs database, run:
USE master
GO
EXEC sp_MSkilldb 'pubs'
GO
|
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
|
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
This is the example:
Here is the result set from my machine:
database_name database_size spaceused
------------- ----------------------- ---------------------------
tempdb 8.500000 .703125
|
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
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:
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