Post #2159

☑️Essential SQL Commands & Functions Cheatsheet Whether you're a beginner or prepping for a system design or data role — mastering these SQL essentials will take you far 💡 ⬇️Here's a quick reference of key SQL operations to know: ➜ SELECT → Retrieve data from a table ➜ WHERE → Filter rows based on condition ➜ GROUP BY → Aggregate rows with same values ➜ HAVING → Filter groups after aggregation ➜ ORDER BY → Sort result by one or more columns ➜ JOIN → Combine rows from multiple tables ➜ UNION → Merge result sets into one ➜ INSERT INTO → Add new data into a table ➜ UPDATE → Modify existing records ➜ DELETE → Remove records ➜ CREATE TABLE → Define a new table ➜ ALTER TABLE → Modify an existing table ➜ DROP TABLE → Delete a table ➜ TRUNCATE TABLE → Remove all records ➜ DISTINCT → Get unique values ➜ LIMIT → Restrict number of results ➜ IN / BETWEEN → Filter by multiple values/ranges ➜ LIKE → Pattern matching ➜ IS NULL → Filter NULL values ➜ COUNT() / SUM() / AVG() → Common aggregate functions 😀Save this for quick reference Hope this helps you 😊