Stop Using LIKE '%...%' for Search Category: Database / MySQL
Searching is a core feature of almost every app. The first instinct is often to use the LIKE operator with wildcards.
Why is Your Query Slow? A 60-Second Guide to EXPLAIN
You have a query that takes 3 seconds to run. Why? Guessing doesn't work. MySQL tells you exactly what it is doing if you ask it.
"Upsert" Trick: Syncing Data Without the "If Exists" Loop
When syncing data from an external API (like updating product prices or user details), developers often write logic like this:
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