Ryan Booz in PostgreSQL

Getting connected to PostgreSQL for the first time

PostgreSQL continues to be all the rage in 2023, whether in “vanilla” form of the fully open-source distribution or a...

03 November 2023 14 min read

BI

Dennes Torres in BI

SQL Endpoints and Lakehouse UI Differences and Access Secrets

There are some differences and secrets between the UI of a SQL Endpoint and the UI of a Lakehouse. I...

30 October 2023 7 min read

T-SQL Programming

Edward Pollack in T-SQL Programming

Export & Import Data in SQL Server: CSV, Parquet & PowerShell

Export and import data in SQL Server using PowerShell and OPENROWSET. Step-by-step guide for CSV files, parquet format, BCP, SQL...

23 October 2023 23 min read

T-SQL Programming

Aaron Bertrand in T-SQL Programming

Don’t Use DISTINCT as a SQL Join Fixer – Use EXISTS Instead

Using DISTINCT to fix duplicate rows from a SQL join is a common antipattern. It generates all the duplicates first,...

16 October 2023 6 min read

Ben Johnston in SQL Server

SQL Server Security Features: Complete Guide

Complete guide to SQL Server security features - TDE, Always Encrypted, Dynamic Data Masking, Row-Level Security, auditing, firewall rules, and...

15 October 2023 39 min read

MySQL

Aisha Bukar in MySQL

A Beginners Guide To MySQL Replication Part 6: Security Considerations in MySQL Replication

Protecting and controlling access to your data against unauthorized person(s) is crucial in any organization. Unauthorized entry or modification of...

12 October 2023 10 min read

Featured

Henrietta Dombrovskaya in Featured

PostgreSQL Indexes: What They Are and How They Help

In the previous blog in this series, we learned how to produce, read and interpret execution plans. We learned that...

09 October 2023 13 min read

Theory and design

Joe Celko in Theory and design

First Normal Form Gets No Respect

Dr. Codd first described the relational model in a paper in Communications of the ACM (CACM 13 No 6; June...

05 October 2023 13 min read

Ben Johnston in SQL Server

How to detect and mitigate Row-Level Security attacks in SQL Server (complete guide, part six)

Detect and mitigate attacks against SQL Server Row Level Security (RLS) - side-channel timing attacks, excessive-error patterns, brute force attempts....

03 October 2023 25 min read

Performance

Aaron Bertrand in Performance

Normalize strings to optimize space and searches

While this article is specifically geared to SQL Server, the concepts apply to any relational database platform. The Stack Exchange...

02 October 2023 9 min read

T-SQL Programming

Itzik Ben-Gan in T-SQL Programming

T-SQL Fundamentals: Controlling Duplicates

When people start learning a new field, for example T-SQL, it’s tempting to spend very little time trying to understand...

28 September 2023 20 min read

Ben Johnston in SQL Server

SQL Server Row-Level Security: Attacks & vulnerabilities (complete guide, part five)

Explore SQL Server Row-Level Security vulnerabilities - direct attacks, indirect attacks, and side-channel bypasses. Essential reading before deploying RLS in...

25 September 2023 22 min read

MySQL

Robert Sheldon in MySQL

MySQL Joins Explained: INNER, LEFT, RIGHT, FULL OUTER, and CROSS JOIN

A complete guide to MySQL joins: INNER JOIN for matching rows, LEFT and RIGHT OUTER JOINs for non-matching rows, FULL...

25 September 2023 28 min read

Database Administration

Adrien Muhlemann in Database Administration

Analyze and Tune SQL Server Statistics

Over the years, SQL Server Statistics have been discussed in countless blog posts, articles, and presentations, and I believe that...

22 September 2023 34 min read

T-SQL Programming

Drupal Grupal in T-SQL Programming

Alternatives To SQL Server 2022 Built-in function GREATEST

If you haven’t already heard, SQL Server 2022 introduced a new built-in system function called GREATEST. Simply put, it is...

18 September 2023 14 min read

Ben Johnston in SQL Server

SQL Server Row-Level Security: Integration, anti-patterns, and alternatives (complete guide, part four)

A complete guide to SQL Server Row-Level Security integration, anti-patterns, and alternatives.…

17 September 2023 20 min read

SQL Server

Ben Johnston in SQL Server

SQL Server Row-Level Security: Performance, tuning, and troubleshooting (complete guide, part three)

Tune SQL Server Row Level Security performance: compare authentication methods (SESSION_CONTEXT, roles, AD), optimise access predicate indexing, and troubleshoot ETL...

10 September 2023 25 min read

MySQL

Robert Sheldon in MySQL

MySQL Constraints Guide: PRIMARY KEY, FOREIGN KEY, NOT NULL, DEFAULT, and CHECK Constraints with Examples

Complete guide to MySQL constraints - PRIMARY KEY for unique row identification, FOREIGN KEY for referential integrity, NOT NULL for...

07 September 2023 31 min read

MySQL

Muhammed Ali in MySQL

Orchestrating a MySQL Container on Kubernetes

If you’ve been using MySQL for a while and want to learn how to orchestrate MySQL containers, you’ve come to...

05 September 2023 9 min read

SQL Server

Ben Johnston in SQL Server

SQL Server Row-Level Security: Setup, access predicates, and examples (complete guide, part two)

Set up SQL Server Row Level Security with access predicates (inline TVFs) and security policies. Part 2 covers three setup...

03 September 2023 16 min read

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Databases

Getting connected to PostgreSQL for the first time

SQL Endpoints and Lakehouse UI Differences and Access Secrets

Export & Import Data in SQL Server: CSV, Parquet & PowerShell

Don’t Use DISTINCT as a SQL Join Fixer – Use EXISTS Instead

SQL Server Security Features: Complete Guide

A Beginners Guide To MySQL Replication Part 6: Security Considerations in MySQL Replication

PostgreSQL Indexes: What They Are and How They Help

First Normal Form Gets No Respect

How to detect and mitigate Row-Level Security attacks in SQL Server (complete guide, part six)

Normalize strings to optimize space and searches

T-SQL Fundamentals: Controlling Duplicates

SQL Server Row-Level Security: Attacks & vulnerabilities (complete guide, part five)

MySQL Joins Explained: INNER, LEFT, RIGHT, FULL OUTER, and CROSS JOIN

Analyze and Tune SQL Server Statistics

Alternatives To SQL Server 2022 Built-in function GREATEST

SQL Server Row-Level Security: Integration, anti-patterns, and alternatives (complete guide, part four)

SQL Server Row-Level Security: Performance, tuning, and troubleshooting (complete guide, part three)

MySQL Constraints Guide: PRIMARY KEY, FOREIGN KEY, NOT NULL, DEFAULT, and CHECK Constraints with Examples

Orchestrating a MySQL Container on Kubernetes

SQL Server Row-Level Security: Setup, access predicates, and examples (complete guide, part two)