Can I use ORDER BY with union all?

It is not possible to use two different ORDER BY in the UNION statement. However, if your requirement is such that you want your top and bottom query of the UNION resultset independently sorted but in the same resultset you can add an additional static column and order by that column.

Does order matter in Union SQL?

The union statement puts the two selects together by order, not by name. The order has to be the same in all of the queries you’re unioning together. Beyond that, the general order of the columns in the query as a whole doesn’t matter.

How do you use ORDER BY clause with union?

As the following query shows, when you include an ORDER BY clause, it must follow the final SELECT statement and use an integer, not an identifier, to refer to the ordering column. Ordering takes place after the set operation is complete.

How to order by with Union in SQL?

To apply an ORDER BY or LIMIT clause to an individual SELECT, parenthesize the SELECT and place the clause inside the parentheses: (SELECT a FROM t1 WHERE a=10 AND B=1 ORDER BY a LIMIT 10) UNION (SELECT a FROM t2 WHERE a=11 AND B=2 ORDER BY a LIMIT 10);

Can You Union top and bottom in SQL Server?

UNION returns single resultsetand as per the Logical Query Processing Phases. However, if your requirement is such that you want your top and bottom query of the UNION resultset independently sorted but in the same resultset you can add an additional static column and order by that column.

Can you use two different order bys in a Union statement?

It is not possible to use two different ORDER BY in the UNION statement. UNION returns single resultsetand as per the Logical Query Processing Phases.

How to order by column in SQL Server?

We will get the data in following order. However, our requirement is to get data in following order. If we need data ordered by Column1 we can ORDER the resultset ordered by Column1. Now to get the data in independently sorted in UNION ALL let us add additional column OrderKey and use ORDER BY on that column.