Category: SQL Server
SQL Server Blog Archives, by Peter Whyte (Database Administrator).
Includes: Database Admin, Management Studio (SSMS), Windows Admin, PowerShell, WSL, MSSQL Backups, Restores & more…
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Why Use WHERE 1=2 in SQL
In a previous blog post, I explained why WHERE 1=1 is often used in SQL queries. This time, let’s discuss WHERE 1=2 — or any condition that results in a FALSE value, such as WHERE 1=9. Essentially, the point is to use a condition that is guaranteed to…
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Get All Database Sizes & Free Space Info In SQL Server
Monitoring database file sizes and free space within data and log files is an important part of monitoring SQL Server health. This information, along with other metrics such as growth events, can help you to better predict and plan for future disk space provisioning needs. The following script…
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Searching for a String Across All Tables in SQL Server
When working with SQL Server, you might need to find where a specific string exists in a database. This is especially useful when working with large or unfamiliar schemas. For example, you may want to check where a value like a username, email, or other data is stored…
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Show Only the Domain of an Email Address in SQL Server
When working with email data in SQL Server, you may often need to show only the domain of an email address. Extracting email domains is useful for analyzing trends, identifying invalid emails, or finding the most frequent domains in your dataset. In this guide, I’ll demonstrate how to…
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The USE Database Statement in SQL Server
The USE [database] command in SQL Server is used to switch the context to a specific database when running queries. This is useful when you need to work with multiple databases or change the active database during a session. When to use this statement:– When you want to…
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Disk Usage by Top Tables Report in SQL Server
The Disk Usage by Top Tables Report in SQL Server is a quick way to get the sizes of all tables within a database. It’ll show all tables largest to smallest tables by total size on disk. If you notice that a database is growing larger in size,…
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SQL Script: Get Last Backup Times in SQL Server
Backing up databases is crucial for data protection in SQL Server, yet it’s surprising how often business-critical databases lack proper backups. When reviewing a new SQL Server instance, one of the first tasks is checking the last backup times to ensure recovery points are available before making any…
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Why use WHERE 1=1 in SQL Queries
A common SQL question is, why would anyone use WHERE 1=1 in their queries? And what does it do? The WHERE 1=1 condition means WHERE TRUE. It returns the same query result as it would without the WHERE Clause. There is no impact on query execution time. This…
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Creating a Linked Server with a MySQL Database
This is my 3rd Linked Server demo post, and this time it’s to a MySQL database. Noteworthy weblinks: > My Linked Server Blog Posts > Microsoft Docs – Linked Servers Here is a simple diagram of the setup in this post. The above was setup similar to what’s…
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Check & Restart SQL Server Services on Linux
As of the 2017 Edition of SQL Server we have been able to install SQL Server on Linux. Linux will likely be more of an unfamiliar environment for traditional Microsoft SQL DBAs. This guide will walk you through how to check the status of SQL Server services and…
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