SQL Cheat Sheet
The 20% of SQL you will use 80% of the time
When I started learning SQL, I thought I had to memorize hundreds of commands.
I didn’t.
Most of the queries I write every day come from the same small set of building blocks:
→ SELECT and FROM to pick your data
→ WHERE to filter rows
→ GROUP BY and HAVING to summarize
→ JOIN to combine tables
→ CASE and COALESCE to handle the messy stuff
Once you understand the order SQL actually runs your query (FROM first, SELECT later), everything starts to make sense. That one idea cleared up so much confusion for me.
So I put the essentials on one page, including the beginner traps that trip almost everyone up (yes, = NULL is one of them).
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Save this for your next practice session, and send it to someone who’s just starting out.
If you’re ready to go deeper, these guided courses are worth your time:
→ SQL Track (beginner → job-ready): https://datacamp.pxf.io/KBE1jv
→ Associate Data Analyst in SQL: https://datacamp.pxf.io/enjg6D
→ Data Analyst Certification (prep + exam): https://datacamp.pxf.io/rEOn65
What was the SQL concept that finally clicked for you? Tell me below 👇
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I wrote a beginner Excel guide for anyone wanting to learn Excel.
Get a copy here: https://selar.com/sql_guide
Other guides and templates here: https://selar.com/m/Anaest?category=data-guide-templates
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If you’re feeling stuck, overwhelmed, or unsure about your next steps in the data space, let’s talk here: https://coachli.co/anaest/SV-FEo66
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