10 2013 档案
摘要:需求说明: 需要查询出某个客户某一年那些天是有连续办理过业务实现SQL如下: 创建表: create table test_num(tyear number, tdate date); 测试数据:insert into test_numselect 2014,trunc(sysdate)-1 from dual union all select 2014,trunc(sysdate)-002 from dual union all select 2014,trunc(sysdate)-003 from dual union all select 2014,trunc(sysdate)-004
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