Dushyanth Jyothi » database

Storing Hierarchical [Tree Structure] Data in a Database

Dushyanth Jyothi — Wed, 12 Aug 2009 13:56:10 +0000

Storing Hierarchical or tree like structured data in a Database
http://www.sitepoint.com/article/hierarchical-data-database

http://www.evolt.org/article/Four_ways_to_work_with_hierarchical_data/17/4047/index.html

SQL server backup Error 3154

Dushyanth Jyothi — Wed, 22 Jul 2009 19:52:03 +0000

SQL Sever Error 3154: The backup set holds a backup of a database other than the existing database.

Tested only on MS SERVER 2008

USE master
GO
 
-- Database to restore : DJ_ADMIN
-- Resore With: DJ_ADMIN_Latest.bak
-- Backup existing database's to : DJ_ADMIN_Old.bak;DJ_ADMIN_Old_Log.bak
-- Database to restore : DJ_ADMIN
 
ALTER DATABASE DJ_ADMIN
SET SINGLE_USER WITH
ROLLBACK IMMEDIATE
RESTORE DATABASE DJ_ADMIN
FROM DISK = 'C:\Backups\DJ_ADMIN_Latest.bak'
WITH MOVE 'DJ_ADMIN' TO 'C:\Backups\DJ_ADMIN_Old.mdf',
MOVE 'DJ_ADMIN_Log' TO 'C:\Backups\DJ_ADMIN_Old_Log.ldf',
REPLACE

Loop through database tables and columns

Dushyanth Jyothi — Wed, 15 Jul 2009 10:50:06 +0000

T-SQL code [Stored Procedure] to loop through all tables and all columns in a database

Applies to MS SQL SERVER 2008

Change [DATABASE_NAME],[SCHEMA_NAME],[USER_NAME] accordingly

Stored Procedure:
USE [DATABASE_NAME] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROC [SCHEMA_NAME].[loop_Through_Tables_Columns] AS BEGIN


	SET NOCOUNT ON

	DECLARE @TableName nvarchar(256)

	DECLARE @ColumnName nvarchar(128)

	SET  @TableName = ''
	WHILE @TableName IS NOT NULL

	BEGIN

		SET @ColumnName = ''

		SET @TableName =

			(SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)) FROM INFORMATION_SCHEMA.TABLES

				WHERE TABLE_TYPE = 'BASE TABLE' /**You can remove this condition to go thourgh with both views and tables**/

					AND	 QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName

					AND	OBJECTPROPERTY(

						OBJECT_ID(

							QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)

							 ), 'IsMSShipped'

						       ) = 0

			)
		PRINT 'TableName:  '+ CAST(@TableName AS CHAR)
			WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)

			BEGIN

				SET @ColumnName =

				(

					SELECT MIN(QUOTENAME(COLUMN_NAME))

					FROM INFORMATION_SCHEMA.COLUMNS

					WHERE TABLE_SCHEMA	= PARSENAME(@TableName, 2)

						AND	TABLE_NAME	= PARSENAME(@TableName, 1)

						/**You you want to go thourgh with certain type of data types**/

						AND	DATA_TYPE IN('char','varchar','nchar','nvarchar','text','ntext','image','xml','varbinary')

						AND	QUOTENAME(COLUMN_NAME) > @ColumnName

				)

				PRINT 'ColumnName:  '+ CAST(@ColumnName AS CHAR)

			END

	END

END GRANT EXECUTE ON [SCHEMA_NAME].[loop_Through_Tables_Columns] to USER_NAME

Execute Stored Procedure:

EXEC [SCHEMA_NAME].[loop_Through_Tables_Columns]

Information Schema Database Metadata

Dushyanth Jyothi — Wed, 15 Jul 2009 09:46:49 +0000

Information schema is part of the SQL-92 standard, holds the structure if your database.

Applies to MS SQL SERVER 2008

T-SQL CODE to see the metada:

SELECT * FROM INFORMATION_SCHEMA.TABLES

SELECT 
TABLE_CATALOG,/*'TABLE_CATALOG' IS SQL-92 STANDARD NAME FOR 'DATABASE'*/
TABLE_SCHEMA,/*'TABLE_SCHEMA' IS SQL-92 STANDARD NAME FOR 'OWNER'*/
TABLE_NAME,
TABLE_TYPE
FROM INFORMATION_SCHEMA.TABLES

Further Reading/Details:
http://msdn.microsoft.com/en-us/library/ms186778.aspx

An error occurred when attaching the database

Dushyanth Jyothi — Tue, 14 Jul 2009 21:56:01 +0000

An error occurred when attaching the database – AdvenureWorks database

The below steps applies to MS SQL Server 2008

A. Make sure you enabled database instance to use FILESTREAM as instructed here:
http://msdn.microsoft.com/en-us/library/cc645923.aspx

B. If you downloaded Adventureworks from codeplex, make sure you have set the right user permissions to these files

C. Copy AdventureWorks2008_Data.mdf and AdventureWorks2008_Log.ldf to
‘C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\’
If you see a folder called ‘Documents’ in the downloaded files set, then copy this folder also to ‘C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\’

D. In the managment studio, open new query window and execute the below code: [Change the files path accordingly]

USE [master]
GO
CREATE DATABASE [Adventureworks] ON
( FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\AdventureWorks2008_Data.mdf' ),
( FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\AdventureWorks2008_Log.ldf' )
FOR ATTACH
GO
if not exists (select name from master.sys.databases sd where name = N'Adventureworks' and SUSER_SNAME(sd.owner_sid) = SUSER_SNAME() ) EXEC [Adventureworks].dbo.sp_changedbowner @loginame=N'sa', @map=false
GO

OR you can attach a databse either using MS:
1. In SQL Server Management Studio Object Explorer, connect to an instance of the Microsoft SQL Server Database Engine, and then expand that instance.
2. Right click Databases, then Tasks, and then click Attach.
3. In the Attach Databases dialog box, to specify the database to be attached, click Add; and in the Locate Database Files dialog box, select the disk drive where the database resides and expand the directory tree to find and select the .mdf file of the database; for example: C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\AdventureWorks2008_Data.mdf

Optionall : Specify a different name, Change the ownership
4. When you are ready to attach the database, click OK.