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Monthly Archives: November 2014

Create Clustered ColumnStore index for All tables

Create Clustered ColumnStore index for All tables

Problem :

we are working in big project SQL Server 2014 upgrade and SQL Server 2014 Performance this project our role to test the new feature in SQL Server 2014 from the performance wise so we decide  to deploy the new Enhancement in SQL Server 2014 (Clustered ColumnStore index ) CCI so i take backup from one database in my work environment and restored it again with prefix _2014 .

this new type of index to create it on the table this table should be no index on it so i drooped all the index from all the tables but the Problem now How can i create the Clustered columnstore index on all tables( tables supported CCI) by one Click.

Solution :

i do one script to create Clustered columnstore index on all supported tables and here the description of the Script

1- to create CCI on any table we have some limitations one of this limitations the data type of the Columns CCI not supported Some data type.

2- I inserted the data type not supported by CCI in temp Tables

CREATE TABLE #CCI_DataType_Limitation ( DataType NVARCHAR(MAX) )
INSERT INTO #CCI_DataType_Limitation
VALUES ( ‘text’ ),
( ‘timestamp’ ),
( ‘hierarchyid’ ),
( ‘Sql_variant’ ),
( ‘xml’ ),
( ‘geography’ ),
( ‘geometry’ )
Select * from #CCI_DataType_Limitation

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Posted by on November 22, 2014 in SQL Server 2014

 

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New Permission in SQL Server 2014

New Permission in SQL Server 2014

Hi Dears as we know SQL Server 2014 come with more new features and more improvements in the Performance today we will take about the new Feature in SQL Server 2014 in particular in SQL Server security SQL Server 2014 come with three new permission really amazing permission it will help any DBA in his work to can grant simple permission in All Databases in the server in the minimum time this operation it will not take from him one second lets go for the scenario and for the DEMO.

in SQL 2012 and we can see 31 permission whereas SQL 2014 has 34 permissions. These permissions are listed under Server properties >  permissions tab.

New Permission in SQL Server 2014:

  1. CONNECT ANY DATABASE Permission.
  2. SELECT ALL USER Securables Permission.
  3. IMPERSONATE ANY LOGIN Permission.

New permisions

 

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Posted by on November 20, 2014 in General topics

 

Breakthrough in SQL Server 2012 Security fixed by SQLServer 2014

Breakthrough in SQL Server 2012 Security fixed by SQLServer 2014

Hi dear we have big bug in SQL Server 2012 security this from my personal view it’s Breakthrough in SQL Server 2012 Security in SQL Server 2012 can the user IMPERSONATE another user and take his privilege and do what he need What !! what i am saying is fact in SQL Server 2012 but it’s fixed in SQL Sever 2014 let’s go for demo:

Open your SQL Server 2014 and open 2 sessions

First Session : Create sysadmin user and read user

1- Sysadmin user

USE [master]
GO
CREATE LOGIN [adminuser] WITH PASSWORD=N’admin’, DEFAULT_DATABASE=[master], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF
GO
ALTER SERVER ROLE [sysadmin] ADD MEMBER [adminuser]
GO

2- Read user

USE [master]
GO
CREATE LOGIN [Readeruser] WITH PASSWORD=N’P@$$w0rd’
GO

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Posted by on November 19, 2014 in SQL Server 2014

 

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How to Grant Show Plan Privilege

How to Grant Show Plan Privilege

Showplan Privilege it’s granted for any one need to see the execution plane for SQL Server query to check the performance of the index or doing index analysis.

Grant Showplan for one user in one database  :

GRANT Showplan TO [DominName\username]

Grant Showplan for one user in All databases in one SQL instance:

 EXEC sp_MSforeachdb N’IF EXISTS
(
SELECT 1 FROM sys.databases WHERE name = ”?”
AND Is_read_only <> 1
)
BEGIN
print ”Use [?]; GRANT Showplan TO [DominName\username]”
END’;

after the execution take the Print scripts and run it in another session.

 
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Posted by on November 16, 2014 in Administration

 

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How to Check the last restart for DB Server

How to Check the last restart for DB Server

Hi Dears i received request from the developers by the Staging DB was down yesterday evening, between 6:00 PM to 9:00 PM, can you please advice at this time to do Scientific investigation and troubleshooting so at this time you should check 2 point :

  1. Last SQL Server instance restart.
  2. Last DB server (windows services ) restart.

Last SQL Server Restart :

we can check it easily and by the Easiest ways (SQL Query)

SELECT sqlserver_start_time FROM sys.dm_os_sys_info
SELECT ‘Statistics since: ‘ + CAST(sqlserver_start_time AS VARCHAR) FROM sys.dm_os_sys_info
Server Restart

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Posted by on November 15, 2014 in Administration

 

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