sql语句错误：“列..不存在”

Question

我尝试从postgres控制台此命令：select sim.id as idsim,        num.id as idnum from main_sim sim   left join main_number num on (FK_Numbers_id=num.id);我得到了这个回应：错误：列“ fk_numbers_id”不存在第1行：...从main_sim sim左移，在（FK_Numbers ...但是如果我只是用以下方法检查我的桌子：dbMobile=# \d main_sim id              | integer               | not null default Iccid           | character varying(19) | not null... FK_Device_id    | integer               |  FK_Numbers_id   | integer               | Indexes:    "main_sim_pkey" PRIMARY KEY, btree (id)    "main_sim_FK_Numbers_id_key" UNIQUE, btree ("FK_Numbers_id")    "main_sim_Iccid_key" UNIQUE, btree ("Iccid")    "main_sim_FK_Device_id" btree ("FK_Device_id")Foreign-key constraints:    "FK_Device_id_refs_id_480a73d1" FOREIGN KEY ("FK_Device_id") REFERENCES main_device(id) DEFERRABLE INITIALLY DEFERRED    "FK_Numbers_id_refs_id_380cb036" FOREIGN KEY ("FK_Numbers_id") REFERENCES main_number(id) DEFERRABLE INITIALLY DEFERRED...我们可以看到该列存在。可能是语法错误，但我看不到...任何帮助将不胜感激。亚历西奥