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博客园 - 李文学

Windows Server 2016 64位 ASP+Access(.mdb) 80004005 最简解决方案 Oracle查询表中指定库名,表约束名的上下表依赖关系 linux简版启动,关闭jar命令 Oracle11.2实例重启 主流数据库 “匹配更新、不匹配插入” 语法详解(Oracle/MSSQL/MySQL) Centos7扩容2 wps,两个页签比较常用函数 VUE-手机号验证 Centos7安装mysql8 Centos7安装ffmpeg 不同数据库标识长度检查 Centos7重置网络 Centos7磁盘空间自动处理 Oracle11新建业务库账号信息 Java启动JAR,.sh版 linux常用命令 centos7防火墙IP白名单维护 centos7安装lamp,php5.6,mysql5.7,xdebug MSSQL最大内存设置
Oracle常见SQL示例
李文学 · 2025-11-19 · via 博客园 - 李文学
-- 分组查询统计示例,就仅供参考SELECT A.* FROM ( SELECT NVL(q."unit", '未知单位') AS unit, TO_CHAR(q."cr…