How do you query the top ten records in a hive database?
There are two ways to query the top ten data items using Hive.
- Use the LIMIT keyword.
SELECT * FROM table_name LIMIT 10;
This will return the first ten records from the table table_name.
- Utilizing the ROW_NUMBER function
SELECT * FROM (
SELECT *, ROW_NUMBER() OVER (ORDER BY column_name) as row_num FROM table_name
) sub
WHERE row_num <= 10;
This will return the top ten records sorted by the specified column_name. Please replace column_name with the name of the column you want to sort by and table_name with the name of the table you want to query.