CREATE TABLE member (member_id DECIMAL, member_name TEXT, party_id TEXT, in_office TEXT)
CREATE TABLE party_events (event_id DECIMAL, event_name TEXT, party_id DECIMAL, member_in_charge_id DECIMAL)
CREATE TABLE party (party_id DECIMAL, minister TEXT, took_office TEXT, left_office TEXT, region_id DECIMAL, party_name TEXT)
CREATE TABLE region (region_id DECIMAL, region_name TEXT, date TEXT, label TEXT, format TEXT, catalogue TEXT)

What is the name of member in charge of greatest number of events?
SELECT T1.member_name FROM member AS T1 JOIN party_events AS T2 ON T1.member_id = T2.member_in_charge_id GROUP BY T2.member_in_charge_id ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."member_name" FROM "member" AS "T1" JOIN "party_events" AS "T2" ON "T1"."member_id" = "T2"."member_in_charge_id" GROUP BY "T2"."member_in_charge_id" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1