Junior — Middle
Can you list the main operators used for data retrieval in SQL?
sobes.tech AI
Answer from AI
Main operators for data selection in SQL:
- SELECT — selects columns from a table.
- FROM — specifies the table from which data is selected.
- WHERE — filters rows based on a condition.
- ORDER BY — sorts the result by one or more columns.
- GROUP BY — groups rows by the value of one or more columns.
- HAVING — filters groups created by GROUP BY.
- LIMIT (or TOP) — limits the number of rows returned.
Example:
SELECT name, COUNT(*) as count
FROM users
WHERE active = 1
GROUP BY name
HAVING count > 5
ORDER BY count DESC
LIMIT 10;