1. KAASHIV INFOTECH
The Asia, India, Tamil Nadu Book Of Record
Holders
SQL SERVER –Booklet 11
- Gives you the interview tips in SQL Server
SQL SERVER Interview Questions-2014
2. KAASHIV INFOTECH
Welcomes you to the Expert Voice Corner
Mr.J.Venkatesan Prabu
Venkatesan Prabu Jayakantham (venkat) has more than 8 years experience in the
Microsoft Technologies such as VB.Net, ASP.Net, C#.net, SSIS, SSAS, ADO.Net,
etc., He is the Managing Director of KAASHIVINFOTECH
(http://www.kaashivinfotech.com/),a software company in Chennai. Before that,
he worked in HCL Technologies (India and Australia) for six years as Project
Lead. As a service motive, Venkat contributed more than 700 articles which is
read by the developers in 170 countries (400 developers per day)
(http://venkattechnicalblog.blogspot.com/). Aligned with KaaShiv InfoTech’s
mission,he met more than 20,000 young minds and spreaded Microsoft
Technologies / Career guidance programs. Venkat won many awards in his
career, which includes Prestigious Microsoft MVP (Most Valuable Professional)
award for the years 2008,2009,2010,2011,2012,2013 and won many awards.
List of other awards in his career,
3. Microsoft certified Smart .Net Candidate in 2004
Most valuable member for dotnetspider site in 2007
HCL SQL Subject Matter expert (SME - SQL Server) for the year
(2008,2009)
HCL Special contribution award winner on Dotnet skills for year(2008)
HCL SQL Knowledge Champion for the year 2009
Mind Cracker MVP on SQLServer –2010 for the year 2010,2011
INETA champion - Gold Member – 2010 for the year 2010 HCL Service
Contribution Award for the year 2010
Leading Lights "Rising Star" award from Common Wealth Bank, Australia
for the year 2010
TECHNICAL CERTIFICATION
Cisco certified Network Associate (CCNA) – 2004
Microsoft Certified Application Developer (MCAD) – 2005
4. ACKNOWLEDGEMENT
I would like to thank my family members for their support and
encouragement. Without their support it would be impossible for me to
publish this e-book. I would also like to thank my KaaShiv InfoTech team
for their support to publish this e-book.
DISCLAIMER
All rights reserved. No part of this book may be copied, adapted,
abridged or stored in any retrieval system, computer system,
photographic or other system or transmitted in any form or by any means
without the prior written permission of the copyright holders. Any breach
will entail legal action and permission without further notice.
5. 1. Why we cannot use column alias in where clause but we can use it in order by
clause of select statement in sql server?
For example, it is incorrect to write:
SELECT Roll_No AS Id From Student WHERE Id > 1
While it correct:
SELECT Roll_No AS Id From Student ORDER BY Id
In sql server order of execution of different clauses of a select statement is following
order:Clause of select statement
Execution order
FROM 1
ON 2
JOIN 3
WHERE 4
GROUP BY 5
WITH CUBE or WITH ROLLUP 6
HAVING 7
SELECT 8
DISTINCT 9
ORDER BY 10
TOP 11
It is clear the WHERE clause executes before the SELECT clause so WHERE clause
has no knowledge about column alias of SELECT clause while ORDER BY clause
executes after the SELECT clause so it know about column alias of SELECT clause.
6. 2.Which command using Query Analyzer will give you the version of SQL server and
operating system?
SELECT SERVERPROPERTY ('productversion'), SERVERPROPERTY ('productlevel'),
SERVERPROPERTY ('edition').
3. What is SQL Server Agent?
SQL Server agent plays an important role in the day-to-day tasks of a database
administrator (DBA). It is often overlooked as one of the main tools for SQL Server
management. Its purpose is to ease the implementation of tasks for the DBA, with its full-
function scheduling engine, which allows you to schedule your own jobs and scripts.
4. Can a stored procedure call itself or recursive stored procedure? How much level
SP nesting is possible?
Yes. Because Transact-SQL supports recursion, you can write stored procedures that call
themselves. Recursion can be defined as a method of problem solving wherein the solution
is arrived at by repetitively applying it to subsets of the problem. A common application of
recursive logic is to perform numeric computations that lend themselves to repetitive
evaluation by the same processing steps. Stored procedures are nested when one stored
procedure calls another or executes managed code by referencing a CLR routine, type, or
aggregate. You can nest stored procedures and managed code references up to 32 levels.
7. 5. What is Log Shipping?
Log shipping is the process of automating the backup of database and transaction log files
on a production SQL server, and then restoring them onto a standby server. Enterprise
Editions only supports log shipping. In log shipping the transactional log file from one
server is automatically updated into the backup database on the other server. If one server
fails, the other server will have the same db and can be used this as the Disaster Recovery
plan. The key feature of log shipping is that it will automatically backup transaction logs
throughout the day and automatically restore them on the standby server at defined interval.
6. Name 3 ways to get an accurate count of the number of records in a table?
SELECT * FROM table1
SELECT COUNT(*) FROM table1
SELECT rows FROM sysindexes WHERE id = OBJECT_ID(table1) AND indid < 2
7. What does it mean to have QUOTED_IDENTIFIER ON? What are the implications
of having it OFF?
When SET QUOTED_IDENTIFIER is ON, identifiers can be delimited by double quotation
marks, and literals must be delimited by single quotation marks. When SET
QUOTED_IDENTIFIER is OFF, identifiers cannot be quoted and must follow all Transact-
SQL rules for identifiers.
8.What is NOT NULL Constraint?
A NOT NULL constraint enforces that the column will not accept null values. The not null
constraints are used to enforce domain integrity, as the check constraints.
8. 9. How to get @@ERROR and @@ROWCOUNT at the same time?
If @@Rowcount is checked after Error checking statement then it will have 0 as the value
of @@Recordcount as it would have been reset. And if @@Recordcount is checked before
the error-checking statement then @@Error would get reset. To get @@error and
@@rowcount at the same time do both in same statement and store them in local variable.
SELECT @RC = @@ROWCOUNT, @ER = @@ERROR
9. 10. What is a Scheduled Jobs or What is a Scheduled Tasks?
Scheduled tasks let user automate processes that run on regular or predictable cycles.
User can schedule administrative tasks, such as cube processing, to run during times of
slow business activity. User can also determine the order in which tasks run by creating
job steps within a SQL Server Agent job. E.g. back up database, Update Stats of Tables.
Job steps give user control over flow of execution. If one job fails, user can configure
SQL Server Agent to continue to run the remaining tasks or to stop execution.
10. 11. What are the advantages of using Stored Procedures?
Stored procedure can reduced network traffic and latency, boosting application
performance.
Stored procedure execution plans can be reused, staying cached in SQL Server's memory,
reducing server overhead.
Stored procedures help promote code reuse.
Stored procedures can encapsulate logic. You can change stored procedure code without
affecting clients.
Stored procedures provide better security to your data.
12. What is a table called, if it has neither Cluster nor Non-cluster Index? What is it
used for?
Unindexed table or Heap. Microsoft Press Books and Book on Line (BOL) refers it as
Heap. A heap is a table that does not have a clustered index and, therefore, the pages are
not linked by pointers. The IAM pages are the only structures that link the pages in a table
together. Unindexed tables are good for fast storing of data. Many times it is better to drop
all indexes from table and then do bulk of inserts and to restore those indexes after that.
13. Can SQL Servers linked to other servers like Oracle?
SQL Server can be linked to any server provided it has OLE-DB provider from Microsoft
to allow a link. E.g. Oracle has an OLE-DB provider for oracle that Microsoft provides to
add it as linked server to SQL Server group.
11. INTERNSHIP IN KAASHIV INFOTECH
-Best internship provider in Chennai
Web Application Designing
Project Documentation
Live Inhouse
Application Development
Windows ADO.NET Application
Template Designing-Live Template Designing, CSS
14. How do you load large data to the SQL server database?
BulkCopy is a tool used to copy huge amount of data from tables. BULK
INSERT command helps to Imports a data file into a database table or view in a
user-specified format.
15. What is Self Join?
This is a particular case when one table joins to itself, with one or two
aliases to avoid confusion. A self join can be of any type, as long as the joined
tables are the same. A self join is rather unique in that it involves a relationship
with only one table. The common example is when company has a hierarchal
reporting structure whereby one member of staff reports to another.
12. KaaShiv InfoTech Offers Best Inpant Training in Chennai.
The training at KAASHIV INFOTECH focus on developing the
technical oriented concepts that turn graduates into employable assets. Handled
only by professionals from MNC companies, we know how to equip you with
strong technologies fundamentals.
INPLANT TRAINING SCHEDULE FOR CSE/IT/MCA STUDENTS
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13. INPLANT TRAINING SCHEDULE FOR ELECTRONIC/ELECTRICAL/EIE
STUDENTS:
Day Programme
Day 1 Embedded System (Embedded Program Designing ,Chip Burning)
Day 2
Wireless System (Device Designing,Controlling Fans with Wireless
Sensors)
Day 3 CCNA (-Networking-Router Configurations Practical Demo)
Day 4 Ethical Hacking (Facebook Hack,Server/Website Hacking(20 Attacks)
Day 5
Matlab (Capture Image,Processing, Animate Images-Practical
Demos)
14. MECHANICAL/CIVIL INPLANT TRAINING SCHEDULE:
Day Programme
Day 1 Aircraft Designing
Day 2
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Airports
Day 3 3D Packaging Designs
Day 4 3D Modeling
Day 5 3D Window Shading
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17. Address:
KAASHIV INFO TECH
Shivanantha Building,
X41, 5th Floor,2nd Avenue,
(Near Ayyappan Temple)
Anna Nagar, Chennai = 600040.
Send Us Your Request Email To arun@kaashivinfotech.com,
kaashiv.info@gmail.com,
venkat@kaashivinfotech.com
Contact Number : 9840678906 ;; 9003718877 ;; 9962345637 ;
Visit our other websites:
http://inplanttrainingchennai.com/ - Inplant Training Portal
http://inplanttrainingchennai.com/ - Internship Portal
jobsanddumps.com – Job Portal
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