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The Ultimate SQL Commands Cheatsheet! ๐ก SQL is the foundation of database management, and knowing the right commands can make you a pro at handling data efficiently! Hereโs a quick reference guide to essential SQL commands:
๐น ๐๐๐ญ๐ ๐๐ฎ๐๐ซ๐ฒ ๐๐๐ง๐ ๐ฎ๐๐ ๐ (๐๐๐) โ Retrieving Data โ
SELECT โ Extract data from tables โ
WHERE โ Apply conditions to filter data โ
ORDER BY โ Sort query results โ
LIMIT โ Restrict the number of rows returned
๐น ๐๐๐ญ๐ ๐๐๐๐ข๐ง๐ข๐ญ๐ข๐จ๐ง ๐๐๐ง๐ ๐ฎ๐๐ ๐ (๐๐๐) โ Managing Table Structure โ
CREATE TABLE โ Define a new table โ
ALTER TABLE โ Modify an existing table โ
DROP TABLE โ Remove a table completely โ
TRUNCATE TABLE โ Delete all records but keep the structure
๐น ๐๐๐ญ๐ ๐๐๐ง๐ข๐ฉ๐ฎ๐ฅ๐๐ญ๐ข๐จ๐ง ๐๐๐ง๐ ๐ฎ๐๐ ๐ (๐๐๐) โ Modifying Data โ
INSERT INTO โ Add new records โ
UPDATE โ Modify existing records โ
DELETE โ Remove specific records
๐น ๐๐๐ญ๐ ๐๐จ๐ง๐ญ๐ซ๐จ๐ฅ ๐๐๐ง๐ ๐ฎ๐๐ ๐ (๐๐๐) โ Managing User Access โ
GRANT โ Provide specific permissions โ
REVOKE โ Remove granted permissions
๐น ๐๐ซ๐๐ง๐ฌ๐๐๐ญ๐ข๐จ๐ง ๐๐จ๐ง๐ญ๐ซ๐จ๐ฅ ๐๐๐ง๐ ๐ฎ๐๐ ๐ (๐๐๐) โ Handling Transactions โ
COMMIT โ Save all changes made during the session โ
ROLLBACK โ Undo changes if needed โ
SAVEPOINT โ Set checkpoints within a transaction
๐น ๐๐๐ ๐๐จ๐ข๐ง๐ฌ โ Combining Data from Multiple Tables โ
INNER JOIN โ Fetch only matching records โ
LEFT JOIN โ Get all records from the left table and matching ones from the right โ
RIGHT JOIN โ Get all records from the right table and matching ones from the left โ
FULL JOIN โ Get all records from both tables #databricks #pyspark #python #premium #datafactory
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