Useful SQL Server scripts

Wednesday, August 15, 2012

lists all the default constraints and the default values for the user tables in the database

SELECT  
        b.name AS TABLE_NAME,
        d.name AS COLUMN_NAME,
        a.name AS CONSTRAINT_NAME,
        c.text AS DEFAULT_VALUEFROM sys.sysobjects a INNER JOIN
        (SELECT name, id
         FROM sys.sysobjects 
         WHERE xtype = 'U') b on (a.parent_obj = b.id)
                      INNER JOIN sys.syscomments c ON (a.id = c.id)
                      INNER JOIN sys.syscolumns d ON (d.cdefault = a.id)                                          
 WHERE a.xtype = 'D'        
 ORDER BY b.name, a.name

function to get time for next job

use msdb
go

/*
select dbo.fn_next_job_time(15, null, null)
select dbo.fn_next_job_time(7, null, null)
select dbo.fn_next_job_time(7, 'CES Weekly Maintenance -','Weekend Sat')
select dbo.fn_next_job_time(7, 'CES Weekly Maintenance -',null)
select dbo.fn_next_job_time(4, 'CES Weekly Maintenance -',null)
*/
CREATE FUNCTION fn_next_job_time
(
    @interval int = 10,
    @jobname nvarchar(100) = null ,
    @schedulename nvarchar(100) = null
)
RETURNS int
AS
BEGIN

    set @jobname = @jobname + '%'
    set @schedulename = @schedulename + '%'

    declare @curr_hr int, @curr_min int, @curr_sec int, @next_hr int, @next_min int, @next_sec int
    declare @nexttime int
    --set @nexttime = 10004
    --set @nexttime = 206
    --set @nexttime = 5506
    --set @nexttime = 230847
    --set @nexttime = 145712
    --set @nexttime = 41942
    --set @nexttime = 225847
    --set @nexttime = 235847

    select top 1 @nexttime = c.active_start_time
    --a.schedule_id, b.name, c.active_start_time,c.name, *
    from sysjobschedules a
    inner join sysjobs b on a.job_id = b.job_id
    inner join sysschedules c on a.schedule_id = c.schedule_id
    where
    (b.name like @jobname or @jobname is null)
    and
    ( c.name like @schedulename or @schedulename is null)
    order by c.active_start_time desc

    select @curr_hr = right(convert(nvarchar(10), @nexttime/10000),2) , @curr_min = right(convert(nvarchar(10), @nexttime/100),2), @curr_sec = right(convert(nvarchar(10), @nexttime),2)
    set @next_sec = @curr_sec
    set @next_min = (@curr_min + @interval)%60
    set @next_hr = @curr_hr + (@curr_min + @interval)/ 60
    set @next_hr = case when @next_hr >= 24 then 0 else @next_hr end
    --select @nexttime, @curr_hr , @curr_min , @curr_sec
    --select @nexttime, @next_hr , @next_min , @next_sec

    select @nexttime = convert(int,
    (case when @next_hr < 10 then '0'+CONVERT(nvarchar(10),@next_hr ) else convert(nvarchar(10),@next_hr ) end) +
    (case when @next_min < 10 then '0'+CONVERT(nvarchar(10),@next_min ) else convert(nvarchar(10),@next_min ) end) +
    (case when @next_sec < 10 then '0'+CONVERT(nvarchar(10),@next_sec) else convert(nvarchar(10),@next_sec) end)
    )


    RETURN @nexttime

END
GO

Wednesday, July 18, 2012

list spaces used by all DBs in a server : sp_dbspaceall

use master
go
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[sp_dbspaceall]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[sp_dbspaceall]
GO
/*
exec sp_dbspaceall
*/
create procedure sp_dbspaceall
as
begin

Declare @FileSpace table (
[database_id] int,
[db_name] nvarchar(100),
[file_id] int,
[file_name] nvarchar(100),
[space_used] bigint
)
INSERT INTO @FileSpace EXEC sp_MSforeachdb 'USE [?] SELECT db_id(''?''),''?'' as DBname,fileid, name ,FILEPROPERTY(name, ''SpaceUsed'') as spaceused from sys.sysfiles';

With SpaceInfo (DBName, FileName, FileType,FilePath,CurrentSizeMB,SpaceUsedMB)
as
(

SELECT
DB_NAME(df.[database_id]) as [DBName],
df.[name] as [FileName] ,
df.type_desc as [FileType],
df.physical_name as [FilePath],
(df.[size]*8.0)/1024.0 as [CurrentSizeMB],
(fs.[space_used]*8.0)/1024.0 as [SpaceUsedMB]
FROM
SYS.MASTER_FILES AS df
INNER JOIN @FileSpace as fs on (df.[database_id]= FS.[database_id] and df.[file_id]=fs.[file_id])
)
SELECT
SI.DBName,
convert(dec(17,2),SUM(SI.CurrentSizeMB)) as [DatabaseSizeMB],
convert(dec(14,2),(1-(SUM(SI.SpaceUsedMB)/SUM(SI.CurrentSizeMB)))*100 )as [%age Free],
convert(dec(17,2),D.DataFileSizeMB) as DataFileSizeMB,
convert(dec(14,2) ,(1-(D.DataFileSpaceUsedMB/D.DataFileSizeMB))*100) as [%age Free],
convert(dec(17,2),L.LogFileSizeMB) as LogFileSizeMB,
convert(dec(14,2),(1-(L.LogFileSpaceUsedMB/L.LogFileSizeMB))*100) as [%age Free]
FROM
SpaceInfo SI
CROSS APPLY (SELECT sum(CurrentSizeMB) as [DataFileSizeMB], SUM(SpaceUsedMB) as [DataFileSpaceUsedMB] FROM SpaceInfo
WHERE filetype='ROWS' and DBName=SI.DBName group by DBName) as D
CROSS APPLY (SELECT sum(CurrentSizeMB) as [LogFileSizeMB], SUM(SpaceUsedMB) as [LogFileSpaceUsedMB] FROM SpaceInfo
WHERE filetype ='LOG' and DBName=SI.DBName group by DBName) as L
GROUP BY
SI.DBName, D.DataFileSizeMB,D.DataFileSpaceUsedMB,L.LogFileSizeMB,L.LogFileSpaceUsedMB
Order by D.DataFileSizeMB desc
end

SQL Query Stress Tool

http://www.mssqltips.com/sqlservertip/2730/sql-query-stress-tool/?utm_source=dailynewsletter&utm_medium=email&utm_content=headline&utm_campaign=2012717

Monday, July 16, 2012

Top SQL Server Tools SQL compliance manager SQL diagnostic manager SQL Monitor SQL Sentry Performance Advisor for SQL Server SQL safe backup SSAS Interview Questions on Measures, Actions, and Storage

http://www.mssqltips.com/sqlservertip/2637/ssas-interview-questions-part-i-questions-on-basic-concepts-data-sources-and-data-source-views/

http://www.mssqltips.com/sqlservertip/2662/sql-server-analysis-services-interview-questions-part-ii--dimensions/

http://www.mssqltips.com/sqlservertip/2683/sql-server-analysis-services-interview-questions-on-dimensions-hierarchies-and-properties/

http://www.mssqltips.com/sqlservertip/2614/ssas-interview-questions-on-measures-actions-and-storage/?utm_source=dailynewsletter&utm_medium=email&utm_content=headline&utm_campaign=2012715

Friday, July 13, 2012

Importing SQL Server Data Using SSIS - Which Option is Fastest

http://www.mssqltips.com/sqlservertip/2684/importing-sql-server-data-using-ssis--which-option-is-fastest/

Wednesday, July 11, 2012

Preventing from Dropping database

CREATE TRIGGER [ddl_trig_Prevent_Drop_Database]
ON ALL SERVER
FOR DROP_DATABASE
AS

DECLARE @db VARCHAR(800)
SET @db = (SELECT 'Database Dropped Attempted by ' + CONVERT(nvarchar(100), ORIGINAL_LOGIN()) +
' executing command: '+ EVENTDATA().value('(/EVENT_INSTANCE/TSQLCommand/CommandText)[1]','VARCHAR(229)')) + '

To temporarily allow dropping action:
DISABLE TRIGGER ddl_trig_Prevent_Drop_Database ON ALL SERVER;

!!!!!!MAKE SURE TO RE-ENABLE THE TRIGGER CHECK AS SOON AS YOU ARE DONE!!!!!!
ENABLE TRIGGER ddl_trig_Prevent_Drop_Database ON ALL SERVER;
'
RAISERROR(@db, 16, 1)WITH LOG

ROLLBACK

GO

Tuesday, July 03, 2012

Disable Enable indexes

select
    sys.objects.name,
    sys.indexes.name,
    'alter index '+ sys.indexes.name +' on '+sys.objects.name+' rebuild',
    'alter index '+ sys.indexes.name +' on '+sys.objects.name+' disable'
from sys.indexes
    inner join sys.objects on sys.objects.object_id = sys.indexes.object_id
where sys.indexes.is_disabled = 1
order by
    sys.objects.name,
    sys.indexes.name

Monday, June 11, 2012

Ordering and Ranking a data set

useful technique to pre-order data set

select
DENSE_RANK() over (order by name_first),
RANK() over (order by name_first),
ROW_NUMBER() over (order by name_first),
ROW_NUMBER() over (order by name_last),
*
from users
order by name_first, name_last

Thursday, May 03, 2012

Database Encryption with DB Certificates

SQL Servers Database Encryption on Swim lanes

This document is create on May 2^nd, 2012 and is valid for Swim Lanes. Certificates are installed on LD4PRDCLT101 and this version of the certificate and key should be used across all swim lanes if needed.

Create a new Master Key

USE master;

CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Password';

--To Drop the masterkey

--DROP MASTER KEY

Create a new Certificate per Database that need to be encrypted

--database encryption key

CREATE CERTIFICATE DatabaseName1_Cert WITH SUBJECT = 'DatabaseName1 Certificate'

CREATE CERTIFICATE DatabaseName2_Cert WITH SUBJECT = 'DatabaseName2 Certificate'

CREATE CERTIFICATE DatabaseName3_Cert WITH SUBJECT = 'DatabaseName3 Certificate'

--To Drop the certificate

-- DROP CERTIFICATE DatabaseName1_Cert

Backup Master Key and certificates and use for restoring databases on a different server

Use master

Backup master key to file = 'C:\MasterKey.key' encryption by password = 'Password' ;

BACKUP CERTIFICATE DatabaseName1_Cert TO FILE = 'c:\DatabaseName1_Cert_file.cert'

WITH PRIVATE KEY ( FILE = 'c:\DatabaseName1_Cert_key.cert' ,

ENCRYPTION BY PASSWORD = 'Password'

);

BACKUP CERTIFICATE DatabaseName2_Cert TO FILE = 'c:\DatabaseName2_Cert_file.cert'

WITH PRIVATE KEY ( FILE = 'c:\DatabaseName2_Cert_key.cert' ,

ENCRYPTION BY PASSWORD = 'Password'

);

BACKUP CERTIFICATE DatabaseName3_Cert TO FILE = 'c:\DatabaseName3_Cert_file.cert'

WITH PRIVATE KEY ( FILE = 'c:\DatabaseName3_Cert_key.cert' ,

ENCRYPTION BY PASSWORD = 'Password'

);

Create certificates from a backup certificate on another server, (note: the master key should be created before this can be done)

CREATE CERTIFICATE DatabaseName1_Cert

FROM FILE = 'C:\DatabaseName1_Cert_file.cert'

WITH PRIVATE KEY (FILE = 'C:\DatabaseName1_Cert_key.cert' , DECRYPTION BY PASSWORD = 'Password')

CREATE CERTIFICATE DatabaseName2_Cert

FROM FILE = 'C:\DatabaseName2_Cert_file.cert'

WITH PRIVATE KEY (FILE = 'C:\DatabaseName2_Cert_key.cert' , DECRYPTION BY PASSWORD = 'Password')

CREATE CERTIFICATE DatabaseName3_Cert

FROM FILE = 'C:\DatabaseName3_Cert_file.cert'

WITH PRIVATE KEY (FILE = 'C:\DatabaseName3_Cert_key.cert' , DECRYPTION BY PASSWORD = 'Password')

Encrypt a Database

USE [DatabaseName1]

CREATE DATABASE ENCRYPTION KEY

WITH ALGORITHM = AES_256

ENCRYPTION BY SERVER CERTIFICATE DatabaseName1_Cert

ALTER DATABASE [DatabaseName1]

SET ENCRYPTION ON

USE [DatabaseName2]

CREATE DATABASE ENCRYPTION KEY

WITH ALGORITHM = AES_256

ENCRYPTION BY SERVER CERTIFICATE DatabaseName2_Cert

ALTER DATABASE [DatabaseName2]

SET ENCRYPTION ON

USE [DatabaseName3]

CREATE DATABASE ENCRYPTION KEY

WITH ALGORITHM = AES_256

ENCRYPTION BY SERVER CERTIFICATE DatabaseName3_Cert

ALTER DATABASE [DatabaseName3]

SET ENCRYPTION ON

Restore the Databases on a separate server, the key and certificates should be already created and restored. If the certificates are not created properly the restore will fail.

RESTORE DATABASE [DatabaseName1_retored]

FROM DISK = N'c:\DatabaseName1.bak' WITH FILE = 1,

MOVE N'Data' TO N'E:\DATA_Release\DatabaseName1.mdf',

MOVE N'Log' TO N'E:\LOG_Release\DatabaseName1.LDF',

NOUNLOAD, REPLACE, STATS = 10

RESTORE DATABASE [DatabaseName2_retored]

FROM DISK = N'c:\DatabaseName2.bak' WITH FILE = 1,

MOVE N'Data' TO N'E:\DATA_Release\DatabaseName2.mdf',

MOVE N'Log' TO N'E:\LOG_Release\DatabaseName2.LDF',

NOUNLOAD, REPLACE, STATS = 10

RESTORE DATABASE [DatabaseName3_retored]

FROM DISK = N'c:\DatabaseName3.bak' WITH FILE = 1,

MOVE N'Data' TO N'E:\DATA_Release\DatabaseName3.mdf',

MOVE N'Log' TO N'E:\LOG_Release\DatabaseName3.LDF',

NOUNLOAD, REPLACE, STATS = 10

View which Databases are encrypted

SELECT db_name(database_id), encryption_state, *

FROM sys.dm_database_encryption_keys with (nolock)

System Tables to view the encryption keys

SELECT * FROM sys.symmetric_keys

SELECT * FROM sys.certificates

SELECT * FROM sys.dm_database_encryption_keys

Remove Encryption from Database

ALTER DATABASE [DatabaseName1];

SET ENCRYPTION OFF;

use [DatabaseName1]

DROP DATABASE ENCRYPTION KEY;