Let’s take a lesson from the world of A Song of Ice and Fire: “Chaos is a ladder.” But this rule does not apply to MySQL queries! On the contrary, if you let chaos into your queries, your performance can tumble down a cliff. Introducing the sinister N+1 Query Problem, the silent killer of database performance.
Hello MySQL enthusiasts! Today, we’re diving into a commonly used yet often underrated topic in the world of databases: the “INSERT INTO … ON DUPLICATE KEY UPDATE” statement. In this article, we’ll explore the advantages and disadvantages of this handy SQL command while also taking a look at what’s happening behind the scenes.