If you’ve already worked with databases, then you could hardly miss the term – Primary Key (PK). And if you’re reading this series and use it to learn about databases, well, this article should give you a good overview of what the PK really is. Still, if you’re a database expert, maybe you’ll find something new or just refresh your knowledge. So, sit back, relax, and let’s dive into PKs.
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SQL While loop and cursor are the most common approach to repeat a statement on condition-based or determined limits. Loop and cursor can be utilized in a circumstance to deal with row-based processing in T-SQL. We generally observe moderate execution of old made procedures, which are composed of using loop and cursors. Those procedures take time, especially when the number of iteration count is big for the execution.
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This 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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Azure Data Studio provides a modern and productive experience for managing on-premise and cloud-based SQL Server instances. Previously, we discussed many useful features of it, and you can explore these articles in Azure Data Studio category.
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This article explores the configuration of the Red hat Amazon EC2 instance for SQL Server installation.
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In this article, we will learn the basics of the view concept in SQL Server and then explore methods to create a view in SQL using T-SQL and SQL Server Management Studio.
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This article explores an SSIS package for importing multiple Excel files data into SQL Server tables.
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The next topic in our Data Mining series is the popular algorithm, Time Series. Since business users want to forecast values for areas like production, sales, profit, etc., with a time parameter, Time Series has become an important data mining tool. It essentially allows analyzing the past behavior of a variable over time in order to predict its future behavior.
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In the previous article, we’ve created two tables, and now we’re ready to use the SQL INSERT INTO TABLE command and populate these tables with data. In order to do so, we’ll prepare statements in Excel and then paste these statements into SQL Server and execute them. We’ll also check the contents of both tables before and after these commands using the SELECT statement. So, let’s start.
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In this article, I am going to show different methods to identify the SQL Server version number and its edition. Also, I have included the list of known SQL Server version numbers, Service Packs (SP), and Cumulative Updates (CU of MS SQL Server 2019, 2017). I have not included the hotfixes and CUs of SQL Server 2008 R2 and earlier versions.
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This article explores the differential backups in AWS RDS SQL Server using recovery scenarios.
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In this article, we will describe SQL Server Profiler and how it can be used. In addition, we will mention the tools that are integrated with it- plans about its deprecation, and what are the alternatives?
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In this article, we will give an overview of various SQL Server data types.
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This article explores the Sequence container in SSIS package with examples.
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In this article, we’ll discuss data type VARCHAR and query performance issues associated with utilizing the lower level VARCHAR data type. CHAR, VARCHAR and NVARCHAR are data types that support storing information in text format in a SQL Server database. These data types allow a wide assortment of character sets in the defined field or column in the database table.
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This article explores the SQL Server Update Join statement in T-SQL for SQL Server.
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Welcome to the first article in the Learn SQL series. In this part, we’ll start with two essential commands in SQL: Create Database and Create Table. While both are pretty simple, they should be used first before you start working on anything with data (unless you use some template database).
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This article discusses the Forwarded Records and its performance issues for heap tables in SQL Server.
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This article explores the SQL Server Schema Compare extension in the Azure Data Studio.
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In this article, we will talk about how to track enabled or disabled SQL jobs in SQL Server using T-SQL. Users with the Sysadmin role have the default permissions to modify the information of any jobs in SQL Server. If a user is not in this role and wants access to this activity, then the user needs to be given the SQLAgentOperatorRole in the msdb database.
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In this article, first, we will briefly describe foreach loops and for loops. Then, we will give an overview of SSIS Foreach Loop Container and For Loop Container. Finally, we will compare these two containers.
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This article explores the SSIS Precedence Constraints, along with examples and scenarios.
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In this article, we will explore the table variable in SQL Server with various examples and we will also discuss some useful tips about the table variables.
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This article shows the best way to import a copy of your MySQL database table to SQL Server using the SQL Server import data feature. We’ll demonstrate how to perform data import and export using a query with the assistance of SQL Server Management Studio.
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In this article, it will be described how to connect to remote MySQL Server on Linux OS using SSH key pairs. Windows OS will be used as a host from which will be established a connection using PuTTY as a client. Besides using PuTTY as a client for establishing the connection to remote machines, it will be used to generate and use secure shell – SSH keys as well.
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