Summarizing data using GROUP BY and HAVING clauses
You can summarize data to get counts, averages, sums, and more using GROUP BY in T-SQL queries. Greg Larsen shows you how.
2022-07-25
Additional Articles
Columnstore Indexes are Finally Sorted in SQL Server 2022
There’s a widespread misconception that SQL Server’s columnstore indexes are like an index on every column.
2022-07-22
Power BI - How to Download and Get Started
In this article learn how to download, install and get started building your first Power BI report using SQL Server data.
2022-07-22
DevOps Collaboration and Process Visibility in Flyway Developments
A brief history of the DevOps movement and a discussion of the pivotal role of a tool like Flyway in the DevOps toolchain, when developing and delivering database changes.
2022-07-20
How to troubleshoot and fix PostgreSQL performance issues
PostgreSQL database performance is critical for application performance. EzzEddin Abdullah shows how to get information about a query’s performance from the execution plan.
2022-07-20
Taming Database Documentation with Flyway and MySQL
Database object documentation is essential for explaining to busy developers, and the wider business, the purpose of each object and how to use it. The solution presented in this article consists of a SQL script to allow developers to add comments to MySQL database objects, without affecting the database version, and a simple way to generate a documentation report, in JSON. The SQL script will execute automatically as a callback, during any Flyway Teams migration run, and the report will allow the team to spot any gaps quickly.
2022-07-18
T-SQL Comment Best Practices for SQL Server
Learn different ways to add comments to your T-SQL code when working with SQL Server along with several examples.
2022-07-18
[From the archives] Your guide to choosing the right monitoring tool [Video]
Join Grant Fritchey in this 35 minute video to learn his top tips for evaluating monitoring tools and vendors, the common pitfalls when implementing a new solution, and how you can demonstrate Return on Investment (ROI) to the business post-purchase.
2022-07-15
SQL Server 2022: Backup Database Options to AWS S3 Bucket - Part 2
In this article we look at how to backup a SQL Server 2022 database using AWS S3 storage along with all the supported backup options.
2022-07-15
Cross-RDBMS Version Checks in Flyway
How does one check that a database is definitively at the version that Flyway says it is? Or that a test teardown procedure leaves no trace in the database? Or verify that an undo script returns a database's metadata to that state it should be in for the version to which you're rolling back? This article shows how to do high-level version checks, by comparing JSON models.
2022-07-13
Blogs
DiskANN Experiment — Exploring Entry Points and Graph Neighborhoods
Introduction I was experimenting with vector search in SQL Server 2025 using approximately 3.8...
T-SQL Tuesday #203: Risk and Reward
By Steve Jones
This is timely, as I’m currently on a boat in the Adriatic taking a...
dataMinds Connect 2026 – Slides & Scripts
You can find the slides and SQL scripts for my session “Spice up your...
Forums
Communication, For Incidents and Life
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PostgreSQL psql Meta Commands: Tables
Comments posted to this topic are about the item PostgreSQL psql Meta Commands: Tables
Building a Support Ticket Triage Report with IIF() and CHOOSE() in SQL Server
Comments posted to this topic are about the item Building a Support Ticket Triage...
Question of the Day
PostgreSQL psql Meta Commands: Tables
Which of the following psql meta commands (also called backslash or slash commands) will provide information about tables within a database?
See possible answers