//表添加备注 COMMENT ON TABLE userinfo IS '用户表' //字段添加备注 COMMENT ON COLUMN userinfo.makedate IS '录入日期' //表添加字段 ALTER TABLE test.userinfo ADD makedate DATE; //查询重复记录 select code from test group by code having count(code) > 1;
oracle对表的基本操作
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转载自lihao312.iteye.com/blog/1747036
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