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Complex SQL Breakdown (CTEs, Subquery, and More)
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At some point in your SQL journey, you'll come across SQL queries that are more complicated - queries that are long, or contain things like Common Table Expressions, subqueries, and other features.
In this video, we'll start with a complex SQL query, and take small steps to understand what it is doing. We'll add comments along the way, and at the end we'll be able to understand what the whole query is doing.
⏱ TIMESTAMPS:
00:00 - Our complex query
01:37 - Formatting the query
03:22 - Base tables
05:58 - First subquery
08:24 - First CTE
09:53 - Subquery in second CTE
12:28 - The next subquery
15:04 - Second CTE
17:18 - Main query
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