Question

I have a question on the sql IN query. For example you have table with columns id, amount name.

With a query:

  SELECT SUM(amount) FROM table WHERE id IN (101,101);

What I want with this is to add amount of a certain id. Whatever the id is inside the IN statement. If like this, two 101, amount of 101 + amount of 101.

The problem is it consider it is one instance. How do I do this? its suppose to be:

  SELECT SUM(amount) FROM table WHERE id IN (SELECT id FROM table.........);

Which the sub select return “101, 101”.

How

Answer 1

SELECT SUM(tbl.amount)
FROM tbl
JOIN (select 101 id UNION ALL
      select 101) InList on InList.id = tbl.id

Expand this way.