CREATE TABLE "farmer_exporter"( 
    "id"                        bigserial PRIMARY KEY,
    "farmer_id"                 INT NOT NULL,
    "exportcompany_id"          INT NOT NULL,
    "created_at"                TIMESTAMPTZ NOT NULL DEFAULT(now())
);
ALTER TABLE "farmer_exporter" ADD FOREIGN KEY ("farmer_id") REFERENCES "farmers" ("id");
ALTER TABLE "farmer_exporter" ADD FOREIGN KEY ("exportcompany_id") REFERENCES "exportcompanies" ("id");