SQL Server Archives - Page 30 of 393 - SQL Authority with Pinal Dave

SQL SERVER – Who ALTER’ed My Database? Catch Them Via DDL Trigger

May 4, 2015

Here is an interesting comment from one of my previous blogs on how to change the compatibility level of SQL server post posted earlier. Some of these comments are interesting and can provide some interesting extension to blog ideas like this. So the comment was: Under what circumstances would SQL…

Interview Question of the Week #018 – Script to Remove Special Characters – Script to Parse Alpha Numerics

May 3, 2015

Pinal Dave

SQL, SQL Interview Questions and Answers, SQL Server, SQL Tips and Tricks

SQL Function, SQL Scripts

If you ask me – there are certain questions not appropriate for an interview as they are often very subjective. There are some questions, which really do not help to identify if the candidate has the necessary skills or not. Here is one such question, if you ask me in the…

SQLAuthority News – Presented 3 Technical Session at Great Indian Developer Summit 2015

May 2, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks, SQLAuthority News

GIDS

Great Indian Developer Summit is my favorite technology event and I have been extremely happy to present technology sessions here for over 5 years. Just like every year, this year, I presented three technology session on SQL Server 2014. This time the event was at two locations. First one is Bangalore and the…

SQL AZURE – How to Disable and Enable All Constraint for Table and Database

May 1, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Azure

Recently I wrote blog to enable and disable all constraints in the database SQL SERVER – How to Disable and Enable All Constraint for Table and Database. One of my reader told me that this trick of sp_msforeachtable doesn’t work in Azure SQL Database (WASD). It is interesting that a lot…

SQL SERVER – Recovering from Snapshots – Notes from the Field #078

April 30, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

Notes from the Field, Snapshot, SQL Backup and Restore, SQL Scripts

[Note from Pinal]: This is a 78th episode of Notes from the Fields series. What do you do when data is deleted accidentally or you are facing disaster? Well, there are plenty of the things, you can do, but when in panic quite often people make mistakes which just intensify the disaster. Database snapshot…

SQL SERVER – Finding Tables with Primary or Foreign Keys

April 29, 2015

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Constraint and Keys, SQL Scripts

If you want to know if a table has a primary key or foreign key, you can find out this in many ways. Let us create these tables CREATE TABLE product_master ( prod_id INT PRIMARY KEY, prod_name VARCHAR(100), price DECIMAL(12,2) ) GO CREATE TABLE product_details ( prod_id INT, sales_date DATETIME,…

Interview Question of the Week #017 – Performance Comparison of Union vs Union All

April 26, 2015

Pinal Dave

SQL, SQL Interview Questions and Answers, SQL Server, SQL Tips and Tricks

SQL Union clause, Union

Here is what I just learned from email. One of the very prestigious organization asks one of their candidate following questions – Question: If you have options to use Union or Union All – which one of the option will use keeping performance as a top most requirement for the query. Answer: Though…