For those who can write SQL but don't understand PL/SQL: An explanation from basic syntax to practical pitfalls

An explanation from basic syntax to practical pitfallsYou can use SQL to search for data and retrieve records by specifying ...

Understanding Django ORM through 1-day vulnerabilities and SQL bugs

This article is the Japanese version of a post published on STEALIEN's Korean technical blog in December 2022. It introduces ...
PC Magazine

query by example

A method for describing a database query originally developed by IBM for mainframes. A replica of an empty record is displayed and the search conditions are typed in under their respective columns ...
Redmond

Understanding Dirty Reads: What NOLOCK Does to Your Queries

Let's break down when it's ideal to use the NOLOCK hint and when you should never use it. As a consultant, I work on wide swaths of database systems, which means I get to see many, many SQL statements ...
Redmond

Deep Dive into SQL Server 2022's Query Performance Features, Part 2: PSP Optimization

In part 1 of my SQL Server 2022 features series, you learned about the improvements to the cardinality estimator component of query optimization. In this installment, you will learn about another ...
InfoWorld

SQL unleashed: 7 SQL mistakes to avoidPostgreSQL

SQL is a convenient way to manage and query your data, but badly written queries can tie up your database. Here are seven common SQL traps and how to avoid them. Database developers have it tough.