In this article, we will explore JSON_QUERY() functions in SQL Server to extract JSON objects and array from the JSON Data.
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Development
An Overview of the XML Task in SSIS Packages
May 18, 2020Introduction
We can use an SSIS package to perform various tasks such as data import, transform, and get output in various formats. Once we launch Visual Studio 2019 and create an integration services project, it shows you various tasks in the SSIS toolbox. In this article, we will explore the XML Task in the SSIS.
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MySQL Create Table statement with examples
May 13, 2020In this article, I am going to explain the MySQL CREATE TABLE statement with examples. The following syntax contains basic statements to create a table in MySQL.
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Lever T-SQL to dynamically define duplicate SQL Server database table rows
May 11, 2020Introduction
Lever T-SQL to handle duplicate rows in SQL Server database tables article highlighted T-SQL features that detect and handle duplicate SQL Server table rows. The techniques work well, but they rely on fixed duplicate row definitions. This article extends those techniques, showing how to define duplicate rows in a dynamic way.
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Build an ASP.NET app with Azure SQL Database
May 6, 2020In this article, you will learn about Azure SQL Database and its uses. Then the article splits into two sets of tutorials. The first part will show you how to create a single database in Azure SQL Database. The second tutorial will show you how to build an ASP.NET app in Azure SQL Database.
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Extract scalar values from JSON data using JSON_VALUE()
May 5, 2020In this article, we will explore JSON_VALUE() function in SQL Server to extract scalar values from JSON data.
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Modifying JSON data using JSON_MODIFY() in SQL Server
May 4, 2020This article explores JSON_MODIFY() function to modify JSON Data in the SQL Server.
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An introduction to Data-Tier applications in SQL Server
April 29, 2020In this article, I’m going to introduce the data-tier applications in SQL Server. As the official documentation from Microsoft says – “Data-tier applications in SQL Server are a logical entity that can be used to develop and manage most of the SQL Server objects like tables, views, stored procedures, functions etc. as a self-contained package“. Essentially, what that means is it is a component of SQL Server, using which we can develop, build, test and deploy databases for SQL Server just like we can do for any other web or desktop applications.
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Lever T-SQL to handle duplicate rows in SQL Server database tables
April 24, 2020Duplicate rows in a SQL Server database table can become a problem. We will see how we can find and handle those duplicate rows using T-SQL in this article.
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Dynamic Pivot Tables in SQL Server
April 2, 2020In this article, I am going to explain how we can create a dynamic pivot table in SQL Server. Pivot tables are a piece of summarized information that is generated from a large underlying dataset. It is generally used to report on specific dimensions from the vast datasets. Essentially, the user can convert rows into columns. This gives the users the ability to transpose columns from a SQL Server table easily and create reports as per the requirements.
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Understanding Dynamic Data Masking in SQL Server
April 2, 2020In this article, I’m going to explain the Dynamic Data Masking feature in SQL Server. As it goes by the name, Dynamic Data Masking is one of the security features that was introduced in SQL Server 2016. In an ever-growing digital era, the security of ones’ data has become one of the most important and expensive deals. Everyone expects their data to be protected as their own asset and like to treat it with the highest efficiency possible.
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Introduction to Row-Level Security in SQL Server
March 31, 2020In this article, I’m going to discuss Row-Level Security in SQL Server. RLS or Row-Level Security as the name suggests is a security mechanism that restricts the records from a SQL Server table based on the authorization context of the current user that is logged in. This means the records from the tables are displayed based on who the user is and to which records do the user has access to. This is usually done to allow specific users to have access to their data only without permission to view other users’ data.
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Working with SQL Server ROWCOUNT
March 30, 2020In this article, we will discuss the SQL Server @@ROWCOUNT and ROWCOUNT system objects by going through practical examples that cover most of these system objects usage.
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Learn to write basic SQL Queries
March 27, 2020Essentially, SQL language allows us to retrieve and manipulate data on the data tables. In this article, we will understand and gain the ability to write fundamental SQL queries. At first, we will take a glance at the main notions that we need to know about in order to write database queries.
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How to drop temp tables in SQL Server
March 23, 2020Temporary tables, also known as temp tables, are widely used by the database administrators and developers. However, it may be necessary to drop the temp table before creating it. It is a common practice to check whether the temporary table exists or not exists. So, we can eliminate the “There is already an object named ‘#temptablename’ in the database” error during the temporary table creation.
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SQL Server Auto Shrink database property
March 5, 2020In this article, we will discuss the SQL Server Auto Shrink database property, which allows SQL Server to automatically shrink the database files when the value is configured as True in the database option. Automatic shrink operation is done by the server auto shrink database feature, which is the main course of this article.
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OLAP Cubes in SQL Server
February 6, 2020An Online Analytical Process (OLAP) cubes are used as an analytical tool. An OLAP Cube is a multi-dimensional database that is optimized for reporting purposes.
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An overview of the CONCAT function in SQL with examples
January 13, 2020In this article, we will explore the syntax, working mechanism and other details of the CONCAT function in SQL and we will also make up various different examples about it.
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Introduction to the sp_executesql stored procedure with examples
January 9, 2020The sp_executesql is a built-in stored procedure in SQL Server that enables to execute of the dynamically constructed SQL statements or batches. Executing the dynamically constructed SQL batches is a technique used to overcome different issues in SQL programming sometimes. For example, when we want to determine the displayed columns in our reports, this procedure might be a solution option for us. In the simplest sense, this procedure takes a dynamically constructed SQL batch and other parameters, then execute it in the runtime and, finally, it returns the result.
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Install and configure the AdventureWorks2016 sample database
January 9, 2020This article explains the process of installing the AdventureWorks2016 and AdventureWorksDW2016 sample database on a stand-alone instance of SQL Server and Azure SQL Server. The sample databases were published by Microsoft to demonstrate how to design a database using SQL Server. Microsoft has also published another lightweight database named AdventureworksLT, which can be used as a sample database on Azure SQL Server.
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An overview of the STRING_AGG function in SQL
January 3, 2020In this article, we will explore the STRING_AGG function in SQL and we will also reinforce our learning with various examples. STRING_AGG function can be counted as a new member of the SQL aggregation functions and it was announced in SQL Server 2017. STRING_AGG function gathers all expression from rows and then puts it together in these rows expression in order to obtain a string. Additionally, this function takes a separator parameter that allows separating the expressions to be concatenated.
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Rollback SQL: Rolling back transactions via the ROLLBACK SQL query
December 26, 2019The rollback SQL statement is used to manually rollback transactions in MS SQL Server.
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SQL Injection: Introduction and prevention methods in SQL Server
December 25, 2019A SQL injection attack is one of the most commonly used hacking techniques. It allows hacks to access information from a database that is otherwise not publically accessible.
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Understanding the SQL EXCEPT statement with examples
December 23, 2019The SQL EXCEPT statement is one of the most commonly used statements to filter records when two SELECT statements are being used to select records.
The SQL EXCEPT statement returns those records from the left SELECT query, that are not present in the results returned by the SELECT query on the right side of the EXCEPT statement.
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Send an alert when the database state changes to SQL Server single-user mode
December 18, 2019This article explains the SQL Server single-user mode and how to configure an automated email alert when the state of the user database changes to the single-user mode. To send an alert, we will create a DDL trigger that executes when the user runs the ALTER DATABASE query. It collects the pieces of information using EVENTDATA() function, saves it in a temporary table, and sends an HTML formatted email.
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