Hive ORDER BY: Sort Data Globally

1 year ago
William Carter
1 minute

To sort globally based on a specific field, you can use the ORDER BY clause in Hive. Here is an example query: Assuming we have a table named table1 with fields id and value, we want to sort globally based on the value field.

SELECT * FROM table1
ORDER BY value;

The above query will return all rows in table1 and sort them in ascending order based on the value field. To sort in descending order, you can use the following query:

SELECT * FROM table1
ORDER BY value DESC;

Be cautious, using the ORDER BY clause in Hive may result in the generation of a globally sorted result set during query execution, potentially impacting performance, especially with large amounts of data. Therefore, it is recommended to use partitioning and sorting techniques to improve performance when sorting large datasets.

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