Comments on: SQL SERVER – Correlated and Noncorrelated – SubQuery Introduction, Explanation and Example http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/ Personal Notes of Pinal Dave Mon, 13 Feb 2012 15:11:24 +0000 hourly 1 http://wordpress.com/ By: R Jagtap http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-248658 Sun, 05 Feb 2012 20:15:41 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-248658 Pinal pls help me out . if a table contains some columns with id say 1,2,3 if i delete row at 2. now i want to insert new row at the id 2

thank you in advance

]]> By: R Jagtap http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-248656 Sun, 05 Feb 2012 20:12:47 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-248656 We all love your articles ! Its really precious as gold !!

Thanks and regards
R Jagtap

]]> By: aita http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-240769 Thu, 19 Jan 2012 13:27:14 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-240769 Hello sir,

I want to get the list of empno’s and ename who is working in NEW YORK location using non-correlated subqueries using emp and dept tables…could you let me know the sql query for this?

]]> By: amit http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-193837 Sat, 12 Nov 2011 11:20:45 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-193837 Sir,
I saw your website its really super it very help full to beginners and improve our knowledge this website because it can easily to understand them.

I have lots of doutes in the sql server pls send to my mail -id daily some tips and tricks in sql server sir.

Also please suggest some books in sql server and how can i get into some company as a sql developer.
plz if possible send the SQL interviw questions.
Thanks,
T.Manikuma

]]> By: Nikita http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-183756 Wed, 26 Oct 2011 15:43:20 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-183756 Hi ,
in SQL can you explain me some security loop holes which can access the program and destroy it?

Thanks & Regards
Nikita

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-178825 Fri, 14 Oct 2011 13:25:38 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-178825 Why are you interchanging the columns? Note that both should have same datatype decdlared to do this

]]> By: Ram http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-178389 Thu, 13 Oct 2011 13:28:39 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-178389 Hi,Madhivinan
this is the scenario wher i had a doubt of interchanging the columns?
So any solution?

create table demotable(id int,name varchar(120))

Insert demotable values(1,’abc’)
Insert demotable values(1,’def’)

select * from demotable

update demotable
set id = name,
name = id

]]> By: Lavanya Sudha http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-168007 Wed, 14 Sep 2011 11:52:25 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-168007 Hi Pinal,

The information in the site is very useful for us.

Can you please send some good sql tutorials( ebooks) for 3+ years exeprienced in .net tecnologies, as I have not worked much in db part.

Would like to improve on that

]]> By: Kanika Sud http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-155269 Tue, 09 Aug 2011 05:32:50 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-155269 Can a subquery be used in an insert statement?
As:
insert into ______()
VALUES()

Is the above valid?

]]> By: ankur kadiyan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-150849 Tue, 26 Jul 2011 18:23:04 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-150849 respected sir ca n u tell me how to find out the increment in salary (percentage) from the table????

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146918 Fri, 08 Jul 2011 15:26:36 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146918 Every database can have only one primary file .However you can add as many secondary files as possible

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146917 Fri, 08 Jul 2011 15:24:45 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146917 Can you give us an example of what you are referring?

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146916 Fri, 08 Jul 2011 15:24:02 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146916 Yes as long as you use top operator too

]]> By: RAM http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146874 Fri, 08 Jul 2011 12:19:30 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-146874 Hi Dave,
For the Querf Of Pawan, for intechanging the values in a column u have given a good solution for it by making use of single query,but it works fine when both the columns are of same datatype,bt its nt wrking wen we use different types,so any conversions?

Regards,
RAM.

]]> By: SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 4 of 31 Journey to SQLAuthority http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-145624 Mon, 04 Jul 2011 01:31:45 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-145624 [...] A subquery is a SELECT statement that is nested within another T-SQL statement. A subquery SELECT statement if executed independently of the T-SQL statement, in which it is nested, will return a resultset. This implies that a subquery SELECT statement can stand alone, and it does not depend on the statement in which it is nested. A subquery SELECT statement can return any number of values and can be found in the column list of a SELECT statement, and FROM, GROUP BY, HAVING, and/or ORDER BY clauses of a T-SQL statement. A subquery can also be used as a parameter to a function call. Basically, a subquery can be used anywhere an expression can be used. (Read more here) [...]

]]> By: Raghav http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-134610 Mon, 16 May 2011 14:16:16 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-134610 Hello Sir,
I have one question how can we use the order by clause in the Sub queries.

Regards,
Raghav Sharma

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132894 Wed, 04 May 2011 14:31:45 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132894 Compare the difference in execution time and choose the best one

]]> By: Dinesh Babu http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132697 Tue, 03 May 2011 13:52:50 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132697 Hi All,

can we have multiple MDF(primary data file) in one database?

Thanks,
Dinesh Babu

]]> By: Dinesh Babu http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132696 Tue, 03 May 2011 13:51:21 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132696 Hi Madhivanan,
Thanks for Reply!!!
your answer look good to me but we need to use in your query group by clause if we are using count(*)

but i want to do same think from Correlated sub query in optimized way…

Thanks,
Dinesh Babu

]]> By: madhivanan http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132492 Mon, 02 May 2011 10:37:53 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-132492 Have you tried this?

select e.empid,e.name,e.Deptid, count(*) as Dept_EmpCount from emp e inner join
(select deptid,count(*) as Dept_EmpCount from emp group by deptid) as e2 on e.deptid=e2.deptid

]]> By: Dinesh Babu http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-131928 Fri, 29 Apr 2011 07:34:45 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-131928 Hi Pinal,
I wish you very Happy life,who is helping lot of People in this world thrg this site.
I have one Question:
what is limitaion of correlated subquery?

I can i optimize below query?

select empid,name,Deptid,
Dept_EmpCount=(select count(*) from emp e1 where e.deptid =e1.deptid)
from emp e

in this Query i am retrieving EmpId,Name ,DeptId, and number of employee in his dept .

I want to OPtimize this Query.
Please Help!!!

Regards,
Dinesh Babu (SQL DBA)

]]> By: Gitesh http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-124385 Tue, 22 Mar 2011 12:13:01 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-124385 Sir,

Thanks for this solution . I would like to know how to call web service from stored procedure…please let me know.

]]> By: Gopi http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-122645 Thu, 10 Mar 2011 06:20:42 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-122645 Dear sir,
your blog is really nice.
you are the best in explaining the concepts…
Thank you

]]> By: neeraj prasad http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-122396 Tue, 08 Mar 2011 10:15:30 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-122396 Dear,

Result will be same of both of subquery,
but Noncorrelated subquery Perform faster

]]> By: Manimaran Duraisamy http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-115767 Thu, 03 Feb 2011 06:04:29 +0000 http://blog.sqlauthority.com/2007/09/07/sql-server-correlated-and-noncorrelated-subquery-introduction-explanation-and-example/#comment-115767 Dear Sir,

I finished MCA in 2009 batch…Now only i joined software field.Sir I want to develop my skill(Sql Server). Please tell how to contact you or otherwise send the sql tricks to my mail id..

Thank you Sir

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