How to generate query aggregation in oracle?

@aniya.jaskolski 

To generate query aggregation in Oracle, you can use the GROUP BY clause along with aggregate functions such as SUM, COUNT, AVG, MAX, and MIN. Here is an example of how you can generate a query aggregation in Oracle:

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SELECT column1, SUM(column2) as total_sum
FROM table_name
GROUP BY column1;

In this example, "column1" is the column you want to group by, and "column2" is the column you want to apply the aggregate function (SUM()) on. You can replace the SUM() function with other aggregate functions based on your requirement.

Make sure to include all non-aggregated columns in the GROUP BY clause. This will ensure that the query returns accurate results.

You can also use the HAVING clause to filter the grouped results based on aggregate conditions. For example:

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SELECT column1, SUM(column2) as total_sum
FROM table_name
GROUP BY column1
HAVING SUM(column2) > 100;

This query will return the total sum of "column2" for each unique value in "column1" where the sum is greater than 100.

Remember to always test your queries to ensure they return the expected results.