Monday, 28 October 2013

Auxiliary Numbers Table - Populated by CTE (Based on Itzik Ben-Gan)

USE [Auxiliary]
GO

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE TABLE
  [dbo].[Nums]
([n] [int] NOT NULL, PRIMARY KEY CLUSTERED
 ([n]  ASC ))
GO
;WITH x00(n) AS (SELECT 1 UNION ALL SELECT 1),
x02 (n) AS (SELECT 1 FROM x00 a, x00 b),
x04 (n) AS (SELECT 1 FROM x02 a, x02 b),
x08 (n) AS (SELECT 1 FROM x04 a, x04 b),
x16 (n) AS (SELECT 1 FROM x08 a, x08 b),
x32 (n) AS (SELECT 1 FROM x16 a, x16 b),
cTally (n) AS (SELECT ROW_NUMBER() OVER (ORDER BY n) FROM x32)
 
INSERT INTO Nums(n)
SELECT * from cTally
WHERE n <= 1000000;
GO



 Based on the CTE used here:
http://sqlreportingservicescrystalreports.blogspot.co.uk/2009/12/auxilary-cte-of-numbers-sql.html

Monday, 28 January 2013

To obtain SQL Server 2008R2 Product Key

To obtain SQL Server 2008R2 Product Key:
  USE MASTER

GO



EXEC XP_REGREAD 'HKEY_LOCAL_MACHINE','SOFTWARE\Microsoft\Microsoft SQL Server\100\BIDS\Setup','ProductCode'

GO

Tuesday, 20 November 2012

Convert time to string - SQL

Scenario where a db field contains seconds, the user wanted a SSRS report displaying various aggregates of the seconds field as Hours - Minutes - Seconds.


IFOBJECT_ID('dbo.udf_SCC_TimeToString') IS NOT NULL
DROP FUNCTION dbo.udf_SCC_TimeToString ;
GO

CREATE
FUNCTION dbo.udf_SCC_TimeToString
(
@timesec INT) --input in seconds as integer

RETURNSVARCHAR(25)

/*==========================================

Dom Horton

17/10/2012

==========================================*/

AS

 
BEGIN
DECLARE

@return
AS VARCHAR(25),

@a AS INT,

@b AS INT,

@hours AS INT,

@mins AS INT,

@secs AS INT;

SET@a = @timesec%3600 --get no. of seconds over the hour

SET@hours = (@timesec - @a)/3600 --get no. of seconds of completed hours, divide by hour in seconds to get completed hours

SET@b = @a --hold no. of secs over the hour

SET@a = @b%60--get no. of secs over the min

SET@mins = (@b - @a)/60 --get no. of seconds of completed mins, divide by min in secs to get completed minutes

SET@secs = @a

SET@return =

CASE
 
WHEN @timesec >=3600

THEN
 
convert(varchar(10),@hours) + ' hr ' +

convert(varchar(10),@mins) + ' min ' +

convert(varchar(10),@secs) + ' sec '

WHEN @timesec >=60

THEN

convert(varchar(10),@mins) + ' min ' +

convert(varchar(10),@secs) + ' sec '

ELSE

convert(varchar(10),@secs) + ' sec '

END;

RETURN
@return

END











Example below showing the Stored Procedure in use:



and in use in a SSRS report:

Thursday, 6 September 2012

Missing indexes - SQL

SELECT index_handle, database_id, object_id, equality_columns, inequality_columns, included_columns, statement

FROM sys.dm_db_missing_index_details

Index usage - SQL

SELECT OBJECT_NAME(I.object_id) AS TableName, I.name, I.index_id, I.type_desc, I.is_unique,


I.fill_factor, I.is_padded, I.is_disabled, I.is_hypothetical,

IUS.index_id , IUS.user_seeks, IUS.user_scans, IUS.user_lookups, IUS.user_updates, IUS.last_user_seek,

IUS.last_user_scan, IUS.last_user_lookup, IUS.last_user_update, IUS.system_seeks, IUS.system_scans, IUS.system_lookups, IUS.system_updates,

IUS.last_system_seek, IUS.last_system_scan, IUS.last_system_lookup, IUS.last_system_update

FROM sys.indexes AS I LEFT OUTER JOIN

sys.dm_db_index_usage_stats AS IUS

ON I.object_id = IUS.object_id AND

I.index_id = IUS.index_id


ORDER BY OBJECT_NAME(I.object_id)