Well, the basic idea is fairly straightforward. We maintain a mapping mp from a value in nums to its position (index) i. Each time we meet an unseen value, we add it to the map (mp[nums[i]] = i). Otherwise, depending on whether the recorded index mp[nums[i]] and the current index isatisfy i - mp[nums[i]] <= k (node that the new index i is larger than the old indexmp[nums[i]]), we return true or up...
关于 rman duplicate from active database，具体操作实际为backup as copy ；会拷贝很多空块；对于那些数据库数据文件超过100G的都不是很建议用；在很大程度上会受到网络带宽的限制，一点出现异常，就要从头再来，非常痛苦； 在做dataguard 能不用duplicate from active database ，还是不要用了，最靠谱的还是用rman 先备份一个吧；版权声明：本文为博主原创文章，未经博主允许不得转载。关于 rman duplicate from active datab...
on duplicate key update 使用：当数据库中有该数据就修改，没有就添加 MySQL语句如下：# id 不存在则添加数据，id存在就更新数据 INSERT INTO t_user(id,name,pwd) VALUE( 1, ZS, XXX) ON DUPLICATE KEY UPDATE PWD = XXX; SQLAlchemy 用法：statement = insert(User).values(user_id=1, name=zs, pwd=xxx).on_duplicate_key_update(name=zs,pwd=xxx)db.session.execute(statement) db.session.commit()
What are good ways to prevent SQL injection? [duplicate] How can I add user-supplied input to an SQL statement?Use parameterized SQL. Examples (These examples are in C#, see below for the VB.NET version.) Replace your string concatenations with @... placeholders and, afterwards, add the values to your SqlCommand. You can choose the name of the placeholders freely, just make sure that they start wi...
RMAN> duplicate target database to dupdb from active database 2> spfile 3> parameter_value_convert=‘/u11/app/oracle/oradata/ora11‘,‘/u11/app/oracle/oradata/dupdb‘ 4> set 5> log_file_name_convert=‘/u11/app/oracle/oradata/ora11‘,‘/u11/app/oracle/oradata/dupdb‘ 6> db_file_name_convert=‘/u11/app/oracle/oradata/ora11‘,‘/u11/app/oracle/oradata/dupdb‘;Sta...
SQLPROMPT Primary>standby数据库set SQLPROMPT StandBy>1、Primary端设置 归档模式+强制日志确保primary数据库运行在归档模式Primary>archive log list Database log mode No Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 5 Current log sequence 7 Primary>shutdown immediate; Database closed. Database...
> backup database format =‘/home/oracle/arch/dbbak_%U‘ plus archivelog;2.修改监听文件，静态注册监听SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(GLOBAL_DBNAME = testdb)(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1/)(SID_NAME =testdb))(SID_DESC =(GLOBAL_DBNAME = dupdb)(ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1/)(SID_NAME =dupdb)))3.修改tnsnames.ora文件DBTEST =(DESCRIPTION =(ADDRE...
报错信息 博主执行sql 插入语句 INSERT INTO 时报错 [Err] 1062 - Duplicate entry 0 for key PRIMARY 意思是0键值已存在 不可重复插入 直接上解决方案吧，把主键的 递增开起来
sql find duplicate标签：span ica cat sele ted from rom int lang 本文系统来源：https://www.cnblogs.com/kakaisgood/p/10027920.html