db2数据库创建删除主键约束和创建删除唯一键约束

创建、删除唯一约束：

db2 "alter table tabname add unique(colname)"

db2 "alter table tabname drop unique CONSTNAME "

 

创建主键约束：

db2 "alter table staff add primary key (id)"

db2 "alter table t_da_jkda_rkxzl drop primary key"