Database development

Sifiso W. Ndlovu

An MDS Driven Approach to a Turnaround Time Calculation in SQL Server

November 30, 2018 by

One calculation that you are almost guaranteed to have to produce in your career as a T-SQL developer relates to the calculation of a turnaround time. This is often a key KPI for measuring the performance of both individuals and teams, particularly when the business operates within a service-oriented sector i.e. customer support, transportation, healthcare etc. Turnaround time calculation does not only refer to business metrics rather any activity (i.e. ordering a pizza) with a recorded start and an end time can have its own turnaround time calculated. In this article we evaluate different options for calculating a turnaround time including using DATEDIFF function, creating your own user-defined function (UDF) as well as an integration with SQL Server Master Data Services.

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Rajendra Gupta
SQL Server 2019 columnstore index execution plan

Columnstore Index Enhancements – Index stats update in clone databases

November 9, 2018 by

SQL Server was launched in 1993 on WinNT and it completed its 25-year anniversary recently. SQL Server has come a long way since its first release. At the same time, Microsoft announced a preview version of SQL Server 2019. SQL Server 2019 provides the ability to extend its support to big data, Apache Spark, Hadoop distributed file system (HDFS) and provides enhancements to database performance, security, new features, and enhancements to SQL Server on Linux.

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Prashanth Jayaram

SQL date format Overview; DateDiff SQL function, DateAdd SQL function and more

October 31, 2018 by

SQL date format functions like the DateDiff SQL function and DateAdd SQL Function are oft used by DBAs but many of us never took the time to fully understand these extremely useful features. For professionals just getting started with SQL Server, these functions are some of the first to become familiar with. So hopefully this article will have a little something for everyone across the skill spectrum

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Prashanth Jayaram

Using the SQL Coalesce function in SQL Server

September 20, 2018 by

This article explores the string manipulation using SQL Coalesce function in SQL Server.

String manipulation is a process to generate another form of existing data in a way the business uses or displayed as results in the reports. Previous SQL string function articles, I have written, including SQL string functions for Data Munging and SQL Substring function overview discussed data preparation and data management tasks using built-in SQL Server string functions.

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Prashanth Jayaram

All about MSSQL-Scripter, the SQL Server cross-platform scripting Tool

August 14, 2018 by

One of the major challenges we face today, in the software development lifecycle, is with respect to development and deployment. As applications are deployed by moving various pieces of the SQL code between several versions, configuration, different editions, and sometimes even different platforms, deployment becomes daunting. In my opinion, scripting helps a lot and can really “grease the wheels” with addressing many scenarios that involve such complexity.

The importance of database level scripting is high, but it is getting easier by the day. Scripting is a process of generating a text file that contains the data structures and data from the database objects.

So, do we have a SQL native tool which serves the various purposes and usage? In some cases, the answer’s a yes, and in others, it’s a no.

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Prashanth Jayaram

Continuous Database Delivery (CD) using SQL Server Tools SqlPackage.exe

August 14, 2018 by

A little curiosity on my part led me to research a little further on the available pieces of SQL Server Tools. A cross-platform tool for continuous integration and deployment, called SqlPackage, is part of SQL Server Data Tools. I picked it up because continuous integration, delivery and deployment are now must-have in the modern-day application development paradigm.

We’d talk about the following in this article:

  1. The Database Management Life Cycle
  2. Complexities of the database release management process
  3. Introduction to SQL Server Data Tools and SqlPackage
  4. Using SqlPackage.exe, with examples
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Bojan Petrovic

How to implement error handling in SQL Server

June 15, 2018 by

Error handling overview

Error handling in SQL Server give us control over Transact-SQL code. For example when things go wrong we get a chance to do something about it and possibly make it right again. SQL Server error handling can be as simple as just logging that something happened or it could be us trying to fix an error. It can even be translating the error in SQL language because we all know how technical SQL Server error messages could get making no sense and hard to understand. Luckily we have a chance to translate those messages into something more meaningful to pass on to the users, developers, etc.

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Gerald Britton

Partial stored procedures in SQL Server

June 8, 2018 by

Introduction

SQL is an old language — almost 50 years! The first commercially-available version of SQL was released by Oracle way back in 1969. In its specifications and general, “standard” appearance, it resembles the other leading language of the day, COBOL. Language theory and computer languages have evolved considerably since then. Modern concepts such as object-oriented programming and functional programming are not well-represented in SQL. That’s a pity. It can lead to copying code which almost always increases maintenance costs and code fragility.

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Timothy Smith

Restricting and monitoring SQL Server data access with SQL views and stored procedures

May 17, 2018 by

This article explains data security for accessing sensitive data and restricts access in application using SQL Views and stored procedures.

We recently faced a leak of information for one of our employees that involved data which caused a conflict within our company, even if it was not personally identifiable information (PII data). When we investigated the issue, we uncovered that we need to organize data access for our teams and review who has access to what information. As of right now, all our users either have access to all tables directly or a subset of all our tables. What are some practices we can use in SQL Server to avoid giving direct table access to our users? Read more »