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...
在Oracle数据库中,可以使用ALTER TABLE语句为已存在的表添加主键。语法如下: sql ALTER TABLE 表名ADD CONSTRAINT 主键名 PRIMARY KEY (列名1, 列名2, ...); 如果不需要命名主键,可以直接使用: sql ALTER TABLE 表名ADD PRIMARY KEY (列名1, 列名2, ...); 3. 提供一个示例,展示如何在Oracle中使用ALTE...
2.添加字段:ALTER TABLE 表名 ADD 字段名 数据类型[属性]; 3.修改字段:ALTER TABLE 表名 CHANGE 原字段名 新字段名 数据类型[属性]; 4.删除字段:ALTER TABLE 表名 DROP 字段名; 2.添加主键 1.语法:ALTER TABLE 表名 ADD CONSTRAINT 主键名 PRIMARY KEY 表名(主键字段); 3.添加外键 1.语法:ALTER TABL...
oracle增加主鍵也不會了 Oracle cycker> alter table robincui add primary key PK_TEST (TEST); alter table robincui add primary key PK_TEST (TEST) * ERROR at line 1: ORA-00906: missing left parenthesis cycker> alter table robincui add primary key (TEST); Table altered. 來自“ ITPUB部落格...
1. alter table debit_slot_detail add primary key (sp_id, so_id); 2. alter table debit_slot_detail add primary key (dn_slot_id, dn_mm_id, sp_id, so_id); thanks in advance for any help Navigate:Previous Message•Next Message ...
Description:I want to add primary key , but report errors:error 1265 (01000): Data truncated for column my sql_mod: ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTIONHow to repeat:CREATE TABLE `c` ...
Description Adding primary key column in older versions of Oracle and in 12c Area SQL General / DDL Contributor Andrew Clarke Created Tuesday December 26, 2017 Statement 1 create table t23 (EMP_NAME varchar2(20), EMP_POS varchar2(20), SALARY number, GENDER varchar2(1)) Table created...
Check in fix forbug #53756: "ALTER TABLE ADD PRIMARY KEY affects crash recovery" rb://369 approved by Marko --- revno: 3552 revision-id: jimmy.yang@oracle.com-20100907054137-tpuior7hez4f5ghl parent: vasil.dimov@oracle.com-20100826150607-w5cgvqrrr0ubhily committer: Jimmy Yang <jimmy.yang...
ALTER TABLE s_emp DROP CONSTRAINT s_emp_manager_id_fk; 2、在删除主键的过程中,通过CASCADE关键字级联删除引用此主键的外键约束 ALTER TABLE s_dept DROP PRIMARY KEY CASCADE; 五、关闭约束 和打开约束 ALTER TABLE 1、不想删除约束但又不想他现在其作用,这时,我们可以采用disable来完成此工作 ...
Set the Details Primary Key Item as P5_DOC. This ishowtheadditional datadefined for your workflow gets tied to theDOCTORtable records. Set the Success Message as "Appointment Submitted Successfully!" Set Parameters for the Workflow Page Process ...