Aisha Bukar in Other

A Beginners Guide to MySQL Replication Part 3: Multi-Source Replication

Welcome back to the world of MySQL Replication! If you’ve been following this series, thank you for your support! And...

18 July 2023 11 min read

Theory and design

Joe Celko in Theory and design

The GROUP BY Clause

When you’re learning SQL DML, the most complicated clause is typically the GROUP BY. It’s a fairly simple grouping based...

10 July 2023 27 min read

PostgreSQL

Henrietta Dombrovskaya in PostgreSQL

When PostgreSQL Parameter Tuning is not the Answer

So much about parameters tuning, but does it always help? Welcome to the third and final blog of the “magic...

06 July 2023 9 min read

SQL Server

Ben Johnston in SQL Server

Unmasking SQL Server Dynamic Data Masking, Part 4, Unmasking Formatted and Unformatted Text

Continuing from the previous entry in this series on security concerns with using Dynamic Data Masking, in this article I...

27 June 2023 30 min read

T-SQL Programming

Greg Larsen in T-SQL Programming

SQL Subquery in SELECT: Examples & Syntax Guide

Learn to embed subqueries inside a SELECT statement in SQL Server. Covers scalar subqueries, correlated subqueries, derived tables, and how...

26 June 2023 15 min read

Snowflake

Pankaj Gupta in Snowflake

Snowflake: A Cloud Warehouse Solution for Analytics

This article explains what Snowflake data warehouse is and how it is different from other traditional data warehouses. This article...

19 June 2023 19 min read

Featured

Robert Sheldon in Featured

MySQL Transactions: BEGIN, COMMIT, ROLLBACK, Autocommit, and Exception Handling in Stored Programs

A practical guide to MySQL transactions - BEGIN, COMMIT, and ROLLBACK; autocommit behaviour and when to turn it off; wrapping...

15 June 2023 20 min read

SQL Server

Ben Johnston in SQL Server

SQL Server DDM Security Risks: Side Channel Attacks and Partial Unmasking

SQL Server Dynamic Data Masking can be bypassed: learn how side channel attacks use range queries to infer masked values,...

14 June 2023 31 min read

PostgreSQL

Grant Fritchey in PostgreSQL

Manipulating Data In PostgreSQL: Learning PostgreSQL with Grant

So far in the series I’ve shown how to create databases, tables, constraints, indexes and schema. Now, it’s time to...

12 June 2023 13 min read

Oracle

Chandra Rawat in Oracle

Oracle INSERT, UPDATE & DELETE: Syntax and Examples

Complete reference for Oracle DML statements. Covers INSERT (single-row and multi-row), UPDATE with conditions, DELETE vs TRUNCATE — with tested...

09 June 2023 20 min read

SQL Server

Ben Johnston in SQL Server

SQL Server Dynamic Data Masking Setup Guide

Set up SQL Server Dynamic Data Masking step by step. Covers ALTER TABLE masking syntax, mask functions (default, email, random,...

07 June 2023 28 min read

Performance

Dennes Torres in Performance

SQL Server 2022: Capture SQL Anti-Patterns

One of the new Extended Event available in SQL Server 2022 is the query_antipattern. This extended event allows to...

01 June 2023 6 min read

T-SQL Programming

Itzik Ben-Gan in T-SQL Programming

T-SQL Gap-Filling: Filling Missing Dates with LAG, IGNORE NULLS, and Range Matching

Three T-SQL approaches for filling gaps in a time series with last-known values (LOCF imputation): TOP-based lookup, IGNORE NULLS (SQL...

29 May 2023 19 min read

SQL Server

Ben Johnston in SQL Server

SQL Server Dynamic Data Masking: Introduction and Use Cases (Part 1)

SQL Server Dynamic Data Masking (DDM) obfuscates column data for unauthorized users without changing the stored data. Part 1 introduces...

26 May 2023 13 min read

MySQL

Lukas Vileikis in MySQL

Optimizing MySQL: Adding Data to Tables

Welcome back to the MySQL optimization series! In case you haven’t been following this series, in the past couple of...

22 May 2023 21 min read

PostgreSQL

Ryan Booz in PostgreSQL

PostgreSQL Basics: A Template for Managing Database Privileges

In the first two articles of this series about PostgreSQL privileges, we reviewed how to create roles, grant them privileges...

18 May 2023 14 min read

T-SQL Programming

Aaron Bertrand in T-SQL Programming

Changing log growth strategy in SQL Server 2022

When I first saw a bullet item stating SQL Server 2022 would support instant file initialization for log file growth,...

15 May 2023 6 min read

PostgreSQL

Henrietta Dombrovskaya in PostgreSQL

Uncovering the mysteries of PostgreSQL (auto) vacuum

Welcome to the second blog of the “magic of parameters” series. In the first entry, I covered memory parameters, and...

12 May 2023 13 min read

MySQL

Robert Sheldon in MySQL

Importing data into a MySQL database using LOAD DATA

Database and development teams often load data from plain text files into their MySQL databases. The files might be used...

04 May 2023 24 min read

PostgreSQL

Ryan Booz in PostgreSQL

PostgreSQL Basics: Essential psql Tips and Tricks

Having access to the psql command-line tool is essential for any developers or DBAs that are actively working with and...

01 May 2023 14 min read

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Databases

A Beginners Guide to MySQL Replication Part 3: Multi-Source Replication

The GROUP BY Clause

When PostgreSQL Parameter Tuning is not the Answer

Unmasking SQL Server Dynamic Data Masking, Part 4, Unmasking Formatted and Unformatted Text

SQL Subquery in SELECT: Examples & Syntax Guide

Snowflake: A Cloud Warehouse Solution for Analytics

MySQL Transactions: BEGIN, COMMIT, ROLLBACK, Autocommit, and Exception Handling in Stored Programs

SQL Server DDM Security Risks: Side Channel Attacks and Partial Unmasking

Manipulating Data In PostgreSQL: Learning PostgreSQL with Grant

Oracle INSERT, UPDATE & DELETE: Syntax and Examples

SQL Server Dynamic Data Masking Setup Guide

SQL Server 2022: Capture SQL Anti-Patterns

T-SQL Gap-Filling: Filling Missing Dates with LAG, IGNORE NULLS, and Range Matching

SQL Server Dynamic Data Masking: Introduction and Use Cases (Part 1)

Optimizing MySQL: Adding Data to Tables

PostgreSQL Basics: A Template for Managing Database Privileges

Changing log growth strategy in SQL Server 2022

Uncovering the mysteries of PostgreSQL (auto) vacuum

Importing data into a MySQL database using LOAD DATA

PostgreSQL Basics: Essential psql Tips and Tricks