利用函数生成编号序列 id位自增长序列 编号规则自定义 Oracle select id,’Q’||to_char(sysdate,’yymmdd’)||substr(‘00000’,0,5-length(id))||id from sys_admin t order by id;
利用函数 生成编号序列
id 位自增长序列
编号规则自定义
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select id,'Q'||to_char(sysdate,'yymmdd')||substr('00000',0,5-length(id))||id from sys_admin t order by id;
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