hive order by

Hive supports the "ORDER BY" clause to sort the result set of a query. The "ORDER BY" clause is used to sort the rows in ascending or descending order based on one or more columns. Here's an example:

SELECT column1, column2
FROM table_name
ORDER BY column1 ASC;

In this example, the result set will be sorted in ascending order based on the values in "column1". If you want to sort in descending order, you can use "DESC" instead of "ASC".

You can also sort by multiple columns. Here's an example:

SELECT column1, column2
FROM table_name
ORDER BY column1 ASC, column2 DESC;

In this case, the result set will be sorted first by "column1" in ascending order and then by "column2" in descending order.

Please note that the "ORDER BY" clause works on a single reducer, so if you have a large dataset, it may impact performance. Additionally, you can use the "SORT BY" clause if you only need to sort the data within each reducer without globally sorting the entire dataset.