SQL Database development

Prashanth Jayaram

Top string functions in SQL Server 2017

June 8, 2017 by

SQL Server 2017 has been in the talk for its many features that simplify a developer’s life. With the previous versions, developers had to write T-SQL, or user-defined functions using temporary tables, and build complex logic, just for string manipulation. In almost every database I work with, I see many user-defined functions for string manipulation and string aggregation.

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Sifiso W. Ndlovu

Understanding the Impact of NOLOCK and WITH NOLOCK Table Hints in SQL Server

June 6, 2017 by

Every once in a while, SQL Server database administrators find themselves in disagreements with their application developer counterparts – particularly when it comes to some of the latter’s Transact SQL (T-SQL) developmental practices. One of my first observations when I joined my current employer is that almost all T-SQL scripts written by application developers uses the NOLOCK table hint. However, from the interactions that I have had with these esteemed developers it doesn’t seem like they understand how the NOLOCK table hint works. Furthermore, although they seem to be aware of a distinction between NOLOCK and the WITH NOLOCK table hint, they again do not seem to comprehend how the two differ from one another. In this article, I explore the internal workings of the NOLOCK table hint and examine the implications of omitting the WITH keyword.

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Ahmad Yaseen

Compression and decompression functions in SQL Server 2016

June 2, 2017 by

The concept of data compression is not a new on for SQL Server Database Administrators , as it is was introduced the first time in SQL Server 2008. In that SQL Server version, you were able to configure the compression at the row and page levels on the table, index, indexed view or the partition. The row and page level compression is not the best choice in all cases, as it does not work well on the Binary Large Objects (BLOB) datatypes, such as the videos, images and text documents.

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Marko Zivkovic
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How to connect and use Microsoft SQL Server Express LocalDB

May 9, 2017 by

Microsoft SQL Server Express LocalDB is intended for developers, it is very easy to install and doesn’t require any complex configuration task to create an instance or to use the database. The Introduction on the installation of Local DB be found on “How to install Microsoft SQL Server Express LocalDB” article.

This article will show different ways of connecting to LocalDB and how to create and use an instance of LocalDB.

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Marko Zivkovic
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How to install Microsoft SQL Server Express LocalDB

May 9, 2017 by

Microsoft SQL Server Express LocalDB, a solution primarily intended for developers, is a lightweight version of SQL Server Express. It is very easy to install and set up. The installation copies a minimum set of files which are necessary to start SQL Server Database Engine. LocalDB supports the same T-SQL language and has the same limitations as SQL Server Express.

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Neeraj Prasad Sharma

Introduction to Nested Loop Joins in SQL Server

May 8, 2017 by

A relational database system uses SQL as the language for querying and maintaining databases. To see the data of two or more tables together, we need to join the tables; the joining can be further categorized into INNER JOIN, LEFT OUTER JOIN, RIGHT OUTER JOIN, FULL OUTER JOIN, and CROSS JOIN. All these types of joins that we use are actually based on the requirement of the users.

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Jefferson Elias

T-SQL as an asset to set-based programming approach

April 27, 2017 by

Introduction

This article is the third and last one of a series of articles that aims to introduce set-based programming approach inside SQL Server, so using Transact SQL. In first article “An introduction to set-based vs procedural programming approaches in T-SQL”, we’ve compared procedural and set-based approaches and came to the conclusion that the second one can facilitate developer or DBA’s life. In second article “From mathematics to SQL Server, a fast introduction to set theory”, we’ve made the parallel between mathematical definition of set theory and its implementation in SQL Server. Now, we’ll discuss about some other features from T-SQL that can’t be left aside when considering sets.

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Timothy Smith
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T-SQL for DBAs – Three ways of using T-SQL for quick data analysis

April 26, 2017 by

Background

As a database administrator, sometimes you need to identify details about a problem as quickly as possible and being able to build and analyze data for analysis will help you solve the problem. From getting information about the latest backups, to saving information about waits or indexes and comparing that to other captured metrics, we will run into issues where being able to get, store and analyze data are important for decisions to solve urgent problems.

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Samir Behara
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SQL Server Code Review Checklist for Developers

April 26, 2017 by

In a software development life cycle, Code Review plays an integral role in improving the product quality. Having a Code Review Checklist is indispensable since it ensures that the best practices are followed and reviews are performed consistently. It is essential for developers to be aware of the coding guidelines while working on their code changes. Catching a bug early in the process is inexpensive and easier to resolve, than compared with a bug caught later in the game. Having all the common mistakes added to the checklist document is a great way to create awareness and ensure good code quality over a period of time.

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Jefferson Elias

From mathematics to SQL Server, a fast introduction to set theory

April 25, 2017 by

Introduction

In the previous article of this series “An introduction to set-based vs procedural programming approaches in T-SQL”, we’ve seen from a simple example that we could find actual benefit from learning set-based approach when writing T-SQL code.

In this article, we will carry on in this way by having a look at what a set is and what we can do with it in a mathematical point of view and how it’s implemented and provided to us in SQL Server. We will also have a look at more “realistic” examples using Microsoft’s AdventureWorks database.

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Sifiso W. Ndlovu

The Return of Standalone Installer for Team Explorer 2017

April 19, 2017 by

The last time I wrote an article relating to Team Explorer, I used it to express my unhappiness with Microsoft’s decision to “break from the norm” and not provide us with a standalone installer for Team Explorer 2015. Such a decision affected development teams that uses Team Explorer to store, collaborate and manage SQL Server-related solutions (i.e. T-SQL scripts, SSRS, SSAS, SSIS) into TFS source control. Well, the good news is that it looks like Microsoft has finally heeded the call of bringing back the standalone installer for Team Explorer as Visual Studio 2017 (available from release 26403.00) now contains a standalone Team Explorer 2017 installer.

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Vitor Montalvão

How to download and install the SQL Server Database Experimentation Assistant (DEA v2.0)

April 19, 2017 by

Introduction

I had the opportunity to work and perform various tests with Database Experimentation Assistant (DEA) Technical Preview 1 (DEA v1) and also worked closely to DEA’s development team by reporting some issues and have their feedback on how to solve most of them. Some issues were really bugs and they had them fixed in this new release, the DEA Technical Preview 2 (DEA v2.0).

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