Betrachten Sie die folgende Tabelle in Postgres 9.4: CREATE TABLE t ( a1 bigserial, a2 bigint NOT NULL, a3 bigint NOT NULL, a4 integer, a5 timestamp with time zone NOT NULL, a6 timestamp with time zone NOT NULL DEFAULT now(), a7 bigint NOT NULL, a8 bigint NOT NULL, a9 real, a10 integer, CONSTRAINT...