Question

I have an SQLite table where I have a list of messages:

to  | from
==========
9999  ME
9999  ME
ME    9999
ME    8888

The result of the query should be in the following format:

number(number of records matching)

9999 (3)
8888 (1)

How can I write a query to give me this resultset? I’m working with Android.

Answer 1

Maybe you can do something using this http://www.postgresql.org/docs/current/static/functions-conditional.html

I guess something like this (didn’t run it):

SELECT number, count(number) as `Count` FROM (
  SELECT 
    CASE
      WHEN to = 'ME' THEN from
      ELSE to
    END AS number
    FROM table
  ) GROUP BY number;