lter table customer add constraint pk_id Primary keycustomer_idANone of themBIt will remove primary key constraintCIt will add a column customer id in customer tableDIt will add a primary key constrai
D. It will add a primary key constraint column customer id in customer table.
原文地址: https://www.cveoy.top/t/topic/cx7n 著作权归作者所有。请勿转载和采集!