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Vivek's SQL Notes

Vivek johari is currently a Analyst and have more that 5.5 yeras of experience in database. He has Master degree in Computer and also he is Microsoft certified Sql DBA (MCTS)& Microsoft certified SQl BI professional(MCTS). He is also Oracle certified profession(OCP)DBA in ORACLE 10g and ORACLE 9i.He has the experience of working in PL/SQL, T-SQL and SSIS/SSRS. His work basically involved designing and optimization of the Database.He has also published many database articles on his blog Technologies with Vivek Johari.

Archives: January 2014

Question of the Week - 11/1/2014

Question:- Suppose there are two tables A and B and we need to write 3 SQL queries which returns the record set as shown in the below figure.


First Query:-

In this case, you have to write a SQL Query using SQL JOIN which return the data which is not common to…

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9 comments, 282 reads

Posted in Vivek's SQL Notes on 11 January 2014

Answer - Objective Question (In which database temporary tables are created in SQL Server)

Question :- In which database temporary tables are created in SQL Server?

1) User database (where temporary table are defined)
   
2) Master database
   
3) TempDB (Correct Answer)

4) Model Database

5) None of the above

Answer
 Thanks to all who attempted this question. 84%…

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1 comments, 661 reads

Posted in Vivek's SQL Notes on 11 January 2014

Answer -Question of the Week - 2/1/2014 - Question 1

Question :-

Suppose we have to design a database in which employees can work on multiple projects.There are many designation defined in the organization to which each employee can belongs.
 

For example, Software engineer, Team lead, Project Manager, Project lead, QC engineer, QC Lead, QC manager etc. An employee…

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0 comments, 344 reads

Posted in Vivek's SQL Notes on 10 January 2014

Answer - Objective Question (Which table is called Heap table in SQL Server)

Question:-

   Which table is called Heap table in SQL Server.

1) Table without any indexes

2) Table without any clustered index (Correct Answer)

3) Table without any non clustered Index

4) None of the above


Many people attempted this question and mostly gives the correct answer. The…

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0 comments, 267 reads

Posted in Vivek's SQL Notes on 6 January 2014

Question of the Week - 2/1/2014 - Question 1

Question :-

Suppose we have to design a database in which employees can work on multiple projects.There are many designation defined in the organization to which each employee can belongs.
 For example, Software engineer, Team lead, Project Manager, Project lead, QC engineer, QC Lead, QC manager etc. An employee can…

Read more

4 comments, 267 reads

Posted in Vivek's SQL Notes on 2 January 2014

Answer - Objective Question (Number of non clustered indexes possible on a Table in SQL Server 2008R2)

Question :- 

How many non clustered indexes are possible in a table in SQL Server 2008R2


1)  1

2) 249

3) 999  (Correct answer)

4) None of these


Explanation


 21 people gives answer to this Question and most of them is correct.

Correct answer is 999 (Option 4).

In…

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0 comments, 315 reads

Posted in Vivek's SQL Notes on 1 January 2014

Answer - Question of the Week - 28/12/2013 - Question 2

Question:- Suppose we have a table named tbl_charactername have only one column say "charactername".
It contains 10 rows. First 5 rows contains "Vivek Johari" and the next 5 rows contains "Abhinav Golwalkar"

tbl_charactername
---------------------
Vivek Johari
Vivek Johari
Vivek Johari
Vivek Johari
Vivek Johari
Abhinav Golwalkar
Abhinav Golwalkar
Abhinav Golwalkar

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0 comments, 187 reads

Posted in Vivek's SQL Notes on 1 January 2014

While loop in SQL server


In While loop, we set a condition for the repeated execution of a SQL Code block or a SQL Statement. The SQL Statement or SQL Block keep on repeatedly executing till the condition in the while loop is satisfied. Once the condition is failed, the repeated execution of the block…

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3 comments, 5,807 reads

Posted in Vivek's SQL Notes on 1 January 2014