CREATE TABLE Project_outcomes (project_id VARCHAR)
CREATE TABLE Projects (organisation_id VARCHAR, project_id VARCHAR)

List the organisation id with the maximum outcome count, and the count.
SELECT T1.organisation_id, COUNT(*) FROM Projects AS T1 JOIN Project_outcomes AS T2 ON T1.project_id = T2.project_id GROUP BY T1.organisation_id ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."organisation_id", COUNT(*) FROM "Projects" AS "T1" JOIN "Project_outcomes" AS "T2" ON "T1"."project_id" = "T2"."project_id" GROUP BY "T1"."organisation_id" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1