Examples of how to read, write and delete registry values using SQL Server extended stored procedures.
These xp's are not documented in SQL Server Books Online and therefore unsupported by Microsoft.
xp_regread
xp_regread [@rootkey=]'rootkey',
[@key=]'key'[, [@value_name=]'value_name'][,
[@value=]@value OUTPUT]
1. Check for vaild key
EXEC master.dbo.xp_regread @rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Microsoft\MSSQLServer\MSSQLServer\'
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KeyExist
-----------
1
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2. Read key as result set
EXEC master.dbo.xp_regread @rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Microsoft\MSSQLServer\MSSQLServer\',
@value_name='defaultLogin'
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Value Data
-------------------- ------
defaultLogin guest
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3. Read key into variable
DECLARE @value varchar(25)
EXEC master.dbo.xp_regread @rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\Microsoft\MSSQLServer\MSSQLServer\',
@value_name='defaultLogin', @value=@value OUTPUT
PRINT @value
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guest
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xp_regwrite
xp_regwrite [@rootkey=]'rootkey',
[@key=]'key', [@value_name=]'value_name',
[@type=]'type', [@value=]'value',
type can be REG_SZ for string values or REG_DWORD for integers
1. Write key and value
EXEC master.dbo.xp_regwrite @rootkey='HKEY_LOCAL_MACHINE',
@key='SOFTWARE\xp_reg', @value_name='URL', @type='REG_SZ',
@value='http://www.swynk.com/friends/green/'
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xp_regdeletekey
xp_regdeletekey [@rootkey=]'rootkey',
[@key=]'key'
Beware, this will delete the whole key. Use Carefully.
1. Delete whole key
EXEC master.dbo.xp_regdeletekey
@rootkey='HKEY_LOCAL_MACHINE', @key='SOFTWARE\xp_reg'
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Msg 22001, Level 1, State 22001
RegDeleteKey() returned error 0,
'The operation completed successfully.'
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