# @dataengineeringtamil on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DTXsrmLkvp4
- **Gondola URL:** https://gondola.cc/posts/63366278-dataengineeringtamil-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/6358f0bd5b.jpg
- **Posted:** 2026-01-11T12:28:57.000+00:00
- **Account Owner:** Data Engineering Tamil (@dataengineeringtamil) — https://gondola.cc/dataengineeringtamil

## Caption

One MySQL Table That Decides Your Interview

My friend shared this interview story from his company.
Candidate wrote the correct SQL.
Result came fast enough.

Interviewer asked just one thing:
👉 “Can you show the EXPLAIN?”
That table revealed everything: • index was used, but inefficient
• too many rows scanned
• most rows filtered out
• extra work happening silently
Interview ended there.

Lesson?
Writing SQL is step one.
Reading how SQL executes is what gets you hired.
Saved this sketched EXPLAIN cheat sheet for quick recall 👇

#dataengineeringtamil
#MySQL #SQL #SQLInterview #DataEngineering

## Stats

- **Views:** 9,501
- **Likes:** 901
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- **Comments:** 3

## Tags

dataengineering, sql, mysql, dataengineeringtamil, sqlinterview

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