How can the oracle retrieve only one piece of data?

11 months ago

Isabella Edwards

1 minute

In Oracle, there are two ways to retrieve only one record.

You can use the ROWNUM keyword in a query to limit the result set to only return one record. For example:

SELECT * FROM table_name WHERE ROWNUM <= 1;

With the FETCH FIRST keyword: In Oracle 12c and above, you can use the FETCH FIRST keyword to limit the result set to only return one row of data. For example:

SELECT * FROM table_name FETCH FIRST ROW ONLY;

Both methods can be used to retrieve only one record, the specific method chosen will depend on the database version and personal preference.