Become a SQL expert! This deck covers 45 essential SQL commands and clauses that every developer and data analyst needs to know. From basic SELECT statements to advanced JOINs, subqueries, and window functions, these commands are fundamental to working with databases. Each card shows the command, its syntax, common use cases, and examples. Perfect for beginners learning SQL or experienced developers looking to refresh their knowledge.
SELECT
Retrieves data from one or more tables
WHERE
Filters rows based on specified conditions
JOIN
Combines rows from two or more tables based on related columns
GROUP BY
Groups rows that have the same values in specified columns
ORDER BY
Sorts the result set by one or more columns
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