CREATE TABLE employee (eid DECIMAL, name TEXT, salary DECIMAL)
CREATE TABLE certificate (eid DECIMAL, aid DECIMAL)
CREATE TABLE flight (flno DECIMAL, origin TEXT, destination TEXT, distance DECIMAL, departure_date TIME, arrival_date TIME, price DECIMAL, aid DECIMAL)
CREATE TABLE aircraft (aid DECIMAL, name TEXT, distance DECIMAL)

what is the salary and name of the employee who has the most number of aircraft certificates?
SELECT T1.name, T1.salary FROM employee AS T1 JOIN certificate AS T2 ON T1.eid = T2.eid GROUP BY T1.eid ORDER BY COUNT(*) DESC LIMIT 1
SELECT "T1"."name", "T1"."salary" FROM "employee" AS "T1" JOIN "certificate" AS "T2" ON "T1"."eid" = "T2"."eid" GROUP BY "T1"."eid" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1