方法一、使用add constraint 方法添加主键约束 alter table 表名 add constraint 主键名 primary key (列名1,列名2,...) 方法二、使用索引创建主键 (和方法一没有区别,可以将方法一理解为省略了using index) alter table 表名 add constraint 主键名 primary key (列名1,列名2,...) using index [index_name...
SQL>altertabletaddconstraintpk_tprimarykey(object_id) usingindexonline parallel 2; altertabletaddconstraintpk_tprimarykey(object_id) usingindexonline parallel 2 ORA-03001: 未实施的功能 SQL>altertabletaddconstraintpk_tprimarykey(object_id) usingindexonline; Tablealtered SQL>altertabletdropprimarykey; T...
SQL>create unique index pk_id_03 ont_pk_03(id)online;Index created.SQL>alter table t_pk_03 add constraint pk_id_03 primarykey(id);Table altered. (2) 往往在生产环境,数据表空间和索引表空间是分开的,如果采用第一种和第二种的方式,主键索引会创建在执行用户的默认表空间,很可能是数据表空间,因...
2.考虑先并行添加惟一性索引,再添加主键 代码语言:javascript 复制 SQL>create unique index pk_t ont(object_id)parallel2online;Index createdSQL>alter table t add constraint pk_t primarykey(object_id);Table alteredSQL>alter index pk_t noparallel;Index altered 3.对比主键和惟一性索引的区别 代码语言:...
SQL> alter table demo add constraint demo_pk primary key(empno); Table altered. SQL> create index demo_idx on demo(ename); Index created. SQL> select object_id,object_name,object_type,status from user_objects; OBJECT_ID OBJECT_NAME OBJECT_TYPE STATUS ...
(ID int PRIMARY KEY, OtherColumn varchar(255))"; cmd.ExecuteNonQuery(); cmd.CommandText ="CREATE SEQUENCE SequenceTest_Sequence "+"START WITH 100 INCREMENT BY 5"; cmd.ExecuteNonQuery(); DataTable testTable =newDataTable(); DataColumn column = testTable.Columns.Add("ID",typeof(int)); ...
每种补偿日志返回一行,结果中需要包含ALL COLUMN LOGGING,或者PRIMARY KEY LOGGING和UNIQUE KEY LOGGING都包含。 如果未打开表级别的补偿日志,请执行下述语句。 ALTERTABLEtable_nameADDSUPPLEMENTAL LOGDATA(PRIMARYKEY,UNIQUE)COLUMNS; 打开后,切换 2 次归档日志,并且启动项目前需要等待 5 分钟以上。如果是 Oracle RAC...
2add constraint pk_t_slave primary key (OWNER, TABLE_NAME, COLUMN_NAME); Table altered Executed in 0.422 seconds T_MASTER和T_SLAVE构成主子表关系,插入数据。 SQL> insert into t_master select owner, table_name, tablespace_name, status from dba_tables; ...
A public key can also enable the receiving entity to validate the organizational affiliation of the sending entity. Secure Credentials: Certificate-Based Authentication in PKI Establishing user identity is of primary concern in distributed environments. Otherwise, there can be little confidence in ...
执行脚本 $ORACLE_HOME/oui/bin/addNode.sh。 Welcome— 单击Next。 指定要通过添加来安装的集群节点— 在该屏幕中,OUI 列出了集群的现有节点,并在下半个屏幕中列出了新节点(一个或多个)。选择节点 oradb5。输入信息之后,单击Next。 集群节点添加总结— 验证新节点列在“New Nodes”下拉菜单之下并单击Install按...