先说 heap_insert 函数: /* * heap_insert - insert tuple into a heap * * The new tuple is stamped with current transaction ID and the specified * command ID. * * If the HEAP_INSERT_SKIP_WAL option is specified, the new tuple is not * logged in WAL, even fo…

db2手工创建表空间 db2 v10.11.1 创建系统管理使用文件目录的表空间 db2 "create tablespace newtbs01 managed by system using ('/home/db2inst3/test/newtb/newtbs01')" 1.2 创建数据库管理的使用文件的表空间 db2 "create tablespace newtbs02 managed by database using (file '/home/db2inst3/te…

ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED; sqlplus shybt/shybt@127.0.0.1:1521/orcl Create user test identified by 12345678 create tablespace SIRM2 datafile 'D:\oracle\product\10.2.0\oradata\orcl\SIRM2.dbf' size 1024M --存储地址 初始大小1G ALTE…

1.创建临时表空间 CREATE TEMPORARY TABLESPACE test_tempTEMPFILE 'C:\oracle\product\10.1.0\oradata\orcl\test_temp01.dbf'SIZE 32MAUTOEXTEND ONNEXT 32M MAXSIZE 2048MEXTENT MANAGEMENT LOCAL 2.创建用户表空间 CREATE TABLESPACE test_dataLOGGINGDATAFILE 'C:\ORACLE\PRODUCT\…

CREATE [UNDO]  TABLESPACE tablespace_name          [DATAFILE datefile_spec1 [,datefile_spec2] ......   [{MININUM EXTENT integer [k|m]   |BLOCKSIZE integer [k]   |logging clause | FORCE LOGGING   |DEFAULT {data_segment_compression} storage_clause   |[…

ODA: After Apply ODA 12.2.1.2.0 Patch, Unable to Create TableSpace Due to [ORA-15001: diskgroup "DATA" does not exist or is not mounted | ORA-15040: diskgroup is incomplete] (Doc ID 2375553.1) APPLIES TO: Oracle Database Appliance Software - Ver…

CREATE EXTENSION https://www.postgresql.org/docs/current/sql-createextension.html CREATE EXTENSION — install an extension Synopsis CREATE EXTENSION [ IF NOT EXISTS ] extension_name [ WITH ] [ SCHEMA schema_name ] [ VERSION version ] [ FROM old_versio…

一.表空间 1.创建表空间 CREATE TABLESPACE 空间名称 DATAFILE '文件名1' SIZE 数字M [,'文件名2' SIZE 数字….] EXTENT MANAGEMENT LOCAL UNIFORM SIZE 数字M 解释: EXTENT MANAGEMENT LOCAL:指明表空间类型是:本地管理表空间.本地管理表空 间要求Oracle中的数据分区(Extent)大小统一 UNIFORM SIZE:指定每个分区的统一大小 必须是管理员用户才能创建表空间,当表空间的空…

1.--dense_rank()分析函数(查找每个部门工资最高前三名员工信息) select * from (select deptno,ename,sal,dense_rank() over(partition by deptno order by sal desc) a from scott.emp) where a<=3 order by deptno asc,sal desc ; 结果: --rank()分析函数(运行结果与上语句相同) select * from (select dep…

--创建索引 关键词 index create[unique] index index_name on table_name(column_name [,column_name…]) [tablespace tablespace_name] --创建唯一索引 unique indexcreate unique index suoyinname on student(sname) --创建同义词 可以理解为其他对象的一个别名,由它映射到另一个对象 关键词 synonym --有两种 一种是publ…