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Mis on SELECT operaator SQL-is?

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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