SQL Breakdown Made Easy
Skills:
SQL Analytics90%
Key Takeaways
Explains SQL execution flow using FROM, WHERE, GROUP BY, HAVING, SELECT, ORDER BY, and LIMIT/OFFSET
Original Description
SQL does NOT start with SELECT
Here’s the actual execution flow in SQL:
1️⃣ FROM – First, SQL pulls the data sources and joins
2️⃣ WHERE – Then it filters rows before any grouping
3️⃣ GROUP BY – It groups the filtered rows
4️⃣ HAVING – Filters groups after aggregation
5️⃣ SELECT – Finally selects the columns/expressions
6️⃣ ORDER BY – Sorts the result
7️⃣ LIMIT / OFFSET – Trims the final output
#coursera #sql
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