Database development

Rajendra Gupta
SQL Case Statement

CASE statement in SQL

April 1, 2019 by

Case statement in SQL returns a value on a specified condition. We can use a Case statement in select queries along with Where, Order By and Group By clause. It can be used in Insert statement as well. In this article, we would explore CASE statement and its various use cases.

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Timothy Smith

Securely Working with Invoke-SqlCmd

March 26, 2019 by

We have a convenient tool for working with PowerShell and SQL Server when using Invoke-SqlCmd. As we saw when running statements, we can run DDL and DML changes with the command without writing our own custom scripts. This carries advantages when we need to quickly develop with PowerShell, but it can come with drawbacks on security if we’re not careful how we use this function. We’ll look at security when using this function by starting with a few examples of what we can do when we have unlimited access along with how we can design to limit our environment to be strict with our use of this tool.

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Esat Erkec
tSQLt Test Adapter for Visual Studio VSIX Installer

SQL Unit testing with the tSQLt framework and SQL Server Database Project integration

March 25, 2019 by

In the previous article SQL unit testing with the tSQLt framework for beginners in this series, we covered tSQLt framework essentials and installation. we also demonstrated basic SQL unit testing through the tSQLt framework. In this article, we will continue to explore SQL unit testing and we will also discuss the benefits of SQL unit testing. Additionally, we will learn how we can use the tSQLt framework in a SQL Server Database Project.

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Timothy Smith
Our CSV file returns with the Export-CSV function that catches the output from the select

Working with PowerShell’s Invoke-SqlCmd

March 18, 2019 by

PowerShell features many one-line commands for working with SQL Server, one of which is Invoke-SqlCmd. This tool can be useful in many development contexts where we need to quickly execute scripts or test code and it helps to know some of the parameters we’ll often use. In addition, because we may want a custom script using some of the underlying .NET objects, we’ll look at an alternative where we will be able to create a custom PowerShell script that connects to SQL Server in order to run commands. The latter can be useful because one-line scripts have a tendency to change in future versions of PowerShell and working with the library directly can sometimes avoid this challenge.

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Esat Erkec
SQL Unit testing - - tSQLt extended properties

SQL unit testing with the tSQLt framework for beginners

March 18, 2019 by

tSQLt is a powerful, open source framework for SQL Server unit testing. In this article, we will mainly focus on how to create and run SQL unit testing with help of the tSQLt framework. Before we begin to learn tSQLt framework details, let’s discuss essentials and importance of the database unit testing approach, in general. SQL unit testing is a vital and inseparable part of the modern database development approach and it makes possible to prevent errors before producing the release deployment process. Some database developers are still discussing the needs of the SQL unit testing concept; however, database unit testing is very significant to control and check the behavior of the individual parts of the database. For this reason, we cannot ignore the need to write unit test cases.

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Timothy Smith

DevSecOps: Developing with Automated Security Testing

March 6, 2019 by

A key component of DevSecOps and identical to running unit tests to validate code after a build, running automated security testing after an application has been deployed (such as automated penetration tests) can provide us with a tool that identifies security risks. As we’ve seen recently, there’s been a growth of many companies experiencing information being compromised and with the development culture of “move fast and break things”, I expect this trend of successful attacks will continue. Before we look at our options for automating this testing, we want to be aware of its limits, evaluate the requirements, and consider common designs that are useful.

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Esat Erkec

SQL Unit Testing with SSDT (SQL Server Data Tools)

February 12, 2019 by

In this article, we will discuss the essentials of the SQL unit testing and then we will explore how to apply SQL unit testing methodology in Azure SQL Database with help of SQL Server Data Tools (SSDT). In particular, this article will focus about unit test theory in terms of SQL Server database development aspect and illustrate SQL unit testing with a detailed example.

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Esat Erkec

SQL Convert Function

January 29, 2019 by

In this article, we will discuss and learn basics and all details about SQL Server data type converting operations and also we will review the SQL CONVERT and TRY_CONVERT built-in functions with various samples. At first, we will explain and clarify syntax of the SQL CONVERT function and then we will learn how can we make data converting process numerical and date/time data types to character data.

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Timothy Smith

Working With Line Numbers and Errors Using Bulk Insert

January 10, 2019 by

In the first part of reviewing the basics of bulk insert, we looked at importing entire files, specifying delimiters for rows and columns, and bypassing error messages. Sometimes we’ll want to skip first and ending lines, log errors and bad records for review after inserting data, and work with data types directly without first importing using a varchar and converting to the data type later. In this part, we look at these techniques using T-SQL’s native bulk insert.

Ranga Babu

SQL Server Code simplification using synonyms

January 4, 2019 by

Problem

In our environment, we use different DB servers and these servers are linked via Linked servers for cross server transactions. We use these linked servers in our stored procedures. The server names are different in different environments and we had to change the server names manually when we promote the stored procedures to other environments. There is a chance of errors while changing the server names manually. In this article let us see how can we eliminate changing the code manually.

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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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