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PostgreSQL 锟叫很讹拷锟斤拷锟矫碉拷锟斤拷锟酵ｏ拷锟斤拷锟斤拷只直锟斤拷支锟街伙拷锟斤拷锟斤拷锟酵★拷锟斤拷锟斤拷锟斤拷式锟斤拷 integer锟斤拷boolean 锟斤拷 void 锟斤拷锟酵讹拷锟斤拷锟斤拷锟斤拷为 integer 值锟斤拷锟斤拷锟斤拷锟斤拷式锟斤拷 float 锟斤拷 real 锟斤拷锟酵讹拷锟斤拷锟斤拷锟斤拷为 float 值锟斤拷Boolean 锟斤拷锟酵憋拷锟斤拷锟斤拷为 "t" 锟斤拷锟斤拷 "f"锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟酵帮拷锟斤拷锟斤拷锟介都锟斤拷锟斤拷锟斤拷为锟街凤拷锟斤拷锟斤拷锟斤拷锟街凤拷锟斤拷锟侥革拷式锟斤拷默锟较碉拷 PostgreSQL 锟斤拷锟揭伙拷锟斤拷锟斤拷锟斤拷锟斤拷锟� psql 锟斤拷锟斤拷锟叫匡拷锟斤拷锟斤拷