Intern
Mis on SELECT operaator SQL-is?
sobes.tech AI
Vastus AI-lt
The SELECT operator is used to retrieve data from one or more database tables.
Main components of the SELECT operator:
- SELECT: Specifies the columns to be selected.
- FROM: Indicates the table(s) from which data is retrieved.
- WHERE: Applies conditions to filter rows.
- GROUP BY: Groups rows with the same values in specified columns.
- HAVING: Applies conditions to groups created by
GROUP BY. - ORDER BY: Sorts the results.
Example:
SELECT column1, column2 -- Selects data from columns column1 and column2
FROM table_name -- Retrieves data from the table table_name
WHERE condition -- Applies a condition to filter rows
ORDER BY column1 DESC; -- Sorts the result in descending order by column1