This article serves as a SQL Server Download guide for both beginners and beyond. Some years ago, it was pretty simple to download the installer because you had all the components installed. Now, it is harder because you need to install several components, there are several versions and editions. This guide will help you to understand which version and edition needs to be downloaded.
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In this article, we will review how to set up auto-failover groups in Azure SQL Server and how failover group is different from active geo-replication in Azure. Auto-failover group is an Azure SQL database feature that replicates one or a group of databases to the secondary Azure SQL server in the cross-region. We cannot have a secondary server in the same region. This feature is used to failover all the databases in the failover group in case of disaster and the failover is automatic.
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This article gives an overview of Service Principal Name (SPN) for using the Kerberos authentication in SQL Server connections. We use the Kerberos authentication to authenticate windows users securely for providing access to SQL Server.
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This article explores the SQL Server Lead function and its usage with various examples.
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This article gives an overview of the SQL DROP TABLE statement to remove one or more tables from a database.
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In this article, we will review how to set up Geo-Replication on Azure SQL databases. Geo-Replication is an Azure SQL database feature that allows you to create a readable secondary database in the same region or cross-region. We can failover to the secondary database in case of an outage for a long time on the primary database server. We can also use this feature to migrate a database from one server to another server in the same or cross region with minimal downtime. Geo-replication uses the Always-on feature to replicate committed transactions to the secondary database asynchronously.
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This article aims to walk you through the SQL Decimal data type and its usage with various examples. We will also see how we can exercise this data type in SQL Server to help make SQL developer’s job easier.
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SQL Server Always On Availability Groups provides HADR solutions for the SQL databases. Here HA refers to high availability and DR refers to disaster recovery. The priority of this feature is to keep the database highly available and then provide Disaster recovery. Due to this reason, if the secondary replica goes down in a synchronous data commit mode, SQL Server changes commit mode to Asynchronous so that users can continue run the transactions and a secondary replica can be in sync later once it bought up. SQL Listener also points to the primary replica and continues redirects connection to the primary replica.
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In-memory technologies are one of the greatest ways to improve performance and combat contention in computing today. By removing disk-based storage and the challenge of copying data in and out of memory, query speeds in SQL Server can be improved by orders of magnitude.
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In this article, we will show how to use the SQL intersect logical operator using different examples.
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We have various database objects such as view, stored procedures, triggers, functions and indexes in a relational database. Many times, we want to view definitions for these objects. We can use either SSMS graphical way or t-SQL to generate scripts.
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In this article, we will review how to setup SQL replication with publisher database in Always On availability groups so that replication continuous to sync even after failover to the secondary server in the availability group.
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SQL Server Always On Availability Groups feature provides high availability (HA) and disaster recovery solutions. We can add multiple databases in a single Always on Availability Group on SQL Server Enterprise edition. Before we add a database in the AG group, we need to use the following checklist.
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We get the requirement to remove the data from the relational SQL table. We can use both SQL Delete and SQL Truncate statement to delete the data. Understanding differences between these commands helps SQL developers to handle their data well. Additionally, this is a very common question asked in SQL beginner’s interviews.
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In this article, we will review how to configure the sync group to replicate data between Azure SQL databases using Azure SQL Data Sync.
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We perform calculations on data using various aggregated functions such as Max, Min, and AVG. We get a single output row using these functions. SQL Sever provides SQL RANK functions to specify rank for individual fields as per the categorizations. It returns an aggregated value for each participating row. SQL RANK functions also knows as Window Functions.
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In this article, we will review on DELETE CASCADE AND UPDATE CASCADE rules in SQL Server foreign key with different examples.
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This article is about techniques for optimizing the SQL Server indexes strategy. It is an appendix of the SQL index overview and strategy article in which I covered different areas like what indexes actually do, how to create them, and I briefly mentioned some index design guidelines. Furthermore, I also presented an example of how to design them by tuning and optimizing queries, so I’ve really tried to cover all but there is always more when it comes to SQL Server indexes.
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In relational databases, data is structured using various database objects like tables, stored procedure, views, clusters etc. This article aims to walk you through ‘SQL VIEW’ – one of the widely-used database objects in SQL Server.
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One shared characteristic among popular data visualization tools such as Power BI is the ease at which data can be extracted from a variety of disparate data sources, usually at a click of a button, as shown in Figure 1. Such convenience, though, tends to come at a cost as you often have little control over how background scripts used to extract data are generated. Yet, this should be of utmost concern for data architects and BI developers alike as rarely do you find auto-generated scripts that are efficient and optimal. In this article, join me as I put on my DBA hat and trace, monitor and review SQL batch statements that are auto-generated by the Get Data feature in Power BI using SQL Server Extended Events.
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SQL Server CASE statement is equivalent to the IF-THEN statement in Excel.
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Developers deal with numerous data types on a day- to-day basis. We need to change the data type or format as per the user requirement. We use ‘SQL Server rounding function’ like SQL Round, Ceiling and Floor to round the values to the nearest numbers. We perform an arithmetic calculation on data as well. It is a challenging task to change the value of a number to an approximate number. We do not want to display decimal numbers in the application front end.
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This article explores SQL Count Distinct operator for eliminating the duplicate rows in the result set.
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This article provides an overview of indexing tables in Azure SQL database using Azure Automation and how to schedule indexing jobs to run at specific intervals.
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It is essential for the DBA to need to ensure the SQL Server database performance. Performance tuning is an open-ended task, and you need to ensure the monitoring of various database parameters.
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