It’s difficult to imagine how helpful obtaining data from multiple locations would be without joins. Joins are one of the most important topics in SQL Server. Real-world relational databases, such as SQL Server, Oracle, and MySQL, are used to store our data in numerous logical tables linked by a common key value. As a result,…
To create a unique number in SQL Server, you can use various techniques depending on your requirements. Here are a few approaches you can consider. Identity Column The simplest way is to use an identity column. It automatically generates a unique number for each row inserted into a table. Here’s an example CREATE TABLE YourTable…
This article addresses formatting issues that may arise when working with time and date, as well as their solutions. T-SQL has the following categories for working with time and date, as is well known: Date Time Smalldatetime DateTimeDatetime2 Datetimeoffset Among these kinds, date, datetime2, and datetimeoffset are recommended. Both the smalldatetime and datetime data formats…
SQL Server sessions are a way to establish a connection between a client and a database. A session is created when a client logs in to a database and remains active until the client logs out or the session is terminated for some other reason. During a session, a client can execute SQL commands and retrieve…
Many organizations fail to update their SQL Servers, leaving them at risk for downed systems, data breaches, and poor performance. SQL Server Maintenance: Performance Two routine maintenance areas that are often overlooked are statistics updates and index maintenance. Statistics Updates SQL Server provides a default feature that will auto-update the server’s statistics. Statistics in SQL…
