select * from persons o where trunc(o.create_date) = to_date('2018-07-30','yyyy-mm-dd') minus 对比数据完全一样. select * from persons o where o.create_date > to_date('2018-07-30','yyyy-mm-dd') and o.create_date < to_date('2018-07-30','yyyy-mm-dd')+1 minus
SELECT * FROM `attendancealert` WHERE DATE_FORMAT(FROM_UNIXTIME(UNIX_TIMESTAMP(`AlertTime`)),'%Y-%m-%d') = DATE_FORMAT(NOW(), '%Y-%m-%d') //先将日期格式转成时间戳 然后时间戳转成Y-m-d的时间格式然后 和今天的Y-m-d的时间进行对比 AND DATE_FORMAT(FROM_UNIXTIME(UNIX_TIMESTAMP(`AlertTime`)),'%
delete FROM tablename a WHERE rowid > ( SELECT min(rowid) FROM tablename b WHERE b.id = a.id and b.name=a.name); select * FROM tablename a WHERE rowid > ( SELECT min(rowid) FROM tablename b WHERE b.id = a.id and b.name=a.name);
between and 方法 select * from kk.kkhmd where larq between(to_date('2008-9-3','yyyy-mm-dd')) and (to_date('2008-9-5','yyyy-mm-dd')) 用and连接 >= <= 方法 select * from kk.kkhmd where larq>=to_date('2008-9-3','yyyy-mm-dd') and larq <=to_date('2008-9-5'
oracle查询和时间有关的命令: 方法一:select * from dual where time between to_date('2012-06-18 00:00:00','yyyy-mm-dd hh24:mi:ss') and to_date('2012-06-18 23:59:59','yyyy-mm-dd hh24:mi:ss');方法二:select * from dual where to_char(time,'yyyy-mm-dd')='2012-06-18';方法三:sel
oracle查询语句大全 oracle 基本命令大全 来源于:http://download.csdn.net/download/jia584643753/5875619 1.create user username identified by password;//建用户名和密码oracle ,oracle 2.grant connect,resource,dba to username;//授权 grant connect,resource,dba,sysdba to username; 3
Oracle查询dba_extents视图很慢 问题描述 下边这条SQL查询每次大概要花1分钟左右,实在是比较异常. select owner,tablespace_name from dba_extents where segment_name='AUD$' group by owner,tablespace_name; 测试分析 先实际跑完一遍,去详细的执行信息. 模板复制: set pagesize 9999 long 9999 line 500 alter session set sta
现在做两个版本的系统,一个用的数据库是Access,另一个就是Oracle了.每个数据库支持的的查询SQL语句都有所区别,这里主要针对Access和Oracle做 记录. 首先贴出遇到问题最多的一条语句(现在可以通过运行),同时查询三个表:PUB_LOG(主),PUB_LOGTYPE(副),PUB_USER(副),提示的错误有:字段不允许.列 名无效,缺失左括号. Access:=>"select m.ID AS ID,t.FULLNAME as LOGTYPE,m.INFO a
ORACLE 查询一个数据表后通过遍历再插入另一个表中的两种写法 语法 第一种: 通过使用Oracle语句块 --指定文档所有部门都能查看 declare cursor TABLE_DEPT and STATUS>-; begin for c in TABLE_DEPT loop INSERT INTO G_KNOWDOCRIGHT(RID,DIRID,DOCID,USERID) VALUES(SYS_GUID(),'权限编号','文档编号',c.ID); end loop; commit;