Comments on: SQL SERVER – Difference Between NOLOCK and NOWAIT Hints http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/ Personal Notes of Pinal Dave Sat, 25 May 2013 01:31:40 +0000 hourly 1 http://wordpress.com/ By: Pankaj http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-472641 Fri, 10 May 2013 12:35:34 +0000 http://blog.sqlauthority.com/?p=22553#comment-472641 Hi Pinal,

Can we set something on Database level so that my all select will by default NOLOCK. Is it possible ?

]]> By: Varun Bc http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-472637 Fri, 10 May 2013 12:26:00 +0000 http://blog.sqlauthority.com/?p=22553#comment-472637 @varun Khanna,

The NOLOCK result is a dirty read..

The transaction is occuring and not occured,if you see the SQL query properly Transaction is opened and not ended.

suppose the transaction fails and is rolled back, the delete will not occur and the record will be in the table

Pinal sir, correct me if i am wrong

Regards,
Varun

]]> By: Guri http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-418148 Tue, 05 Feb 2013 13:56:49 +0000 http://blog.sqlauthority.com/?p=22553#comment-418148 yes, because the first transaction is not committed yet. you can rollback that transaction that means you still have single row in the table versus query with NOLOCK said zero rows

]]> By: Varun Khanna http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-416876 Sat, 02 Feb 2013 19:28:26 +0000 http://blog.sqlauthority.com/?p=22553#comment-416876 Pinal,
Correct me if i am wrong !!
Below is the scenario you described
a) You deleted record from table
b) Executed query with NOWAIT and got error..That looks fine
c) Executed query with NOLOCK and it returned no record / error and that looks fine as we already deleted record from table.

So, my question is with NOLOCK we are getting correct result..right?

Am i missing something….

Varun

]]> By: Dibyajyoti Das http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-416162 Fri, 01 Feb 2013 07:04:51 +0000 http://blog.sqlauthority.com/?p=22553#comment-416162 Hello Sir, Please Tell me how to take differential backup in sql server , Please give me commands, I have SQL Backup and Ftp but I want to take using command day by day basis

]]> By: Nilesh Patel http://blog.sqlauthority.com/2013/02/01/sql-server-difference-between-nolock-and-nowait-hints/#comment-416122 Fri, 01 Feb 2013 05:14:50 +0000 http://blog.sqlauthority.com/?p=22553#comment-416122 Hi Pinal ,

Good Article , really helpful

but i have question can I use 2 With Clause with one query ?

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