SQL Archives - Page 177 of 519 - SQL Authority with Pinal Dave

SQLAuthority News – Microsoft Whitepaper – Idle Connection Resiliency

April 12, 2014

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

Developers can write data access application that enables ideal connection resiliency with the .NET framework. An idle connection is the one that is active but it’s not executing a command or waiting for data. It is very important to understand how idle connection is reconnecting back in the .NET framework…

SQL SERVER – Drop All the Foreign Key Constraint in Database – Create All the Foreign Key Constraint in Database

April 11, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Constraint and Keys, SQL Scripts

Earlier I wrote a blog post about how to Disable and Enable all the Foreign Key Constraint in the Database. It is a very popular article. However, there are some scenarios when user needs to drop and recreate the foreign constraints. Here is a fantastic blog comment by SQL Expert…

SQL SERVER – Finding Jobs Shrinking Database Files – Notes from the Field #023

April 10, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

Notes from the Field, Shrinking Database, SQL Backup and Restore

[Notes from Pinal]: Search on the internet about ‘Shrinking Database’, you will find plenty of advice why it is bad and it should not be done. If you do not believe me, just try it yourself. Even I have blogged about it before that it is an absolutely bad thing…

MySQL – Finding First day and Last day of a Month

April 9, 2014

Pinal Dave

SQL, SQL Tips and Tricks

MySQL, SQL DateTime

MySQL supports a lot of DATE and TIME related functions. If you want to find out last day of a month, you can make use of an inbuilt function named LAST_DAY. SET @date:='2012-07-11'; SELECT LAST_DAY(@date) AS last_day; The above code returns the value 2012-07-31 However, there is no inbuilt function…

SQL SERVER – What is SSAS Tabular Data Model and Why to Use it

April 8, 2014

Pinal Dave

SQL

SQL Analysis Services, SSAS

Analysis services in SQL Server 2012 can be either deployed in multi-dimensional mode or tabular mode or power pivot for SharePoint as well. Tabular mode is a new enhancement in SQL Server 2012 analysis service database structure. It is a columnar database capable of incredible performance and compression ratio. At this point, there is a lot of confusion in users on why to use the tabular model when we already have multidimensional model.So, let’s discuss these points first before creating a tabular model project. Let us learn about the SSAS Tabular Data Model.

SQL SERVER – Fix – Error 1759 Computed column in table is not allowed to be used in another computed-column definition

April 6, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

SQL Error Messages

This is a very common error with beginning developers when they start working with computed columns. When a new developer finds a joy of computed column, it is very natural to use the same computed column for other columns. However, a computed column cannot be used in another computed column…

SQL SERVER – Unable to ALTER Computed Column in SQL Server – How to ALTER Computed Column

April 5, 2014

Pinal Dave

SQL, SQL Server, SQL Tips and Tricks

A Very common question, I often receive is Q: “How to ALTER computed columns?” A: There is NO way to alter computed column. You will have to drop and recreate it. Here is a demonstration of it. If you try to alter the computed column it will throw following error.…