ADD CONSTRAINT PRIMARY KEY
drop constraint and recreate it alter table Persion drop CONSTRAINT <constraint_name> alter table Persion add primary key (persionId,Pname ..., ADD CONSTRAINT u_Customer_Id PRIMARY KEY (C_Id,Name); OR ALTER TABLE sales ADD CONSTRAINT sales_pk PRIMARY ...,This Oracle tutorial explains how to create, change, drop, disable, and enable a primary key in Oracle with syntax and examples. In Oracle, a primary key is a ... ,The "PersonID" column in the "Persons" table is the PRIMARY KEY in the ... OrderID int NOT NULL PRIMARY KEY, ... ADD CONSTRAINT FK_PersonOrder ,ADD CONSTRAINT PK_Person PRIMARY KEY (ID,LastName);. Note: If you use the ALTER TABLE statement to add a primary key, the primary key column(s) ... ,ALTER TABLE Persons ADD CONSTRAINT pk_PersonID PRIMARY KEY (Id_P,LastName). 注释：如果您使用ALTER TABLE 语句添加主键，必须把主键列声明 ... ,Learn how to create, change, drop, disable, and enable a primary key in SQL ... ALTER TABLE table_name ADD CONSTRAINT constraint_name PRIMARY KEY ... ,This SQL tutorial explains how to create and drop a primary key in SQL with syntax and examples. In SQL, a primary key is a single field or combination of fields ... , alter table Employee drop constraint chk_Employee;. ○ primary key(主鍵限制)：Primary Key中的每一筆資料都是表格中的唯一 ..., TransactionHistoryArchive ADD CONSTRAINT PK_TransactionHistoryArchive_TransactionID PRIMARY KEY CLUSTERED (TransactionID); ...
| 相關軟體 UR Browser 資訊 | |
|---|---|
 ADD CONSTRAINT PRIMARY KEY 相關參考資料
Add primary key to existing table - Stack Overflow
drop constraint and recreate it alter table Persion drop CONSTRAINT <constraint_name> alter table Persion add primary key (persionId,Pname ... https://stackoverflow.com CONSTRAINT SQL運用@ oracle園地:: 痞客邦::
ADD CONSTRAINT u_Customer_Id PRIMARY KEY (C_Id,Name); OR ALTER TABLE sales ADD CONSTRAINT sales_pk PRIMARY ... https://oracled2k.pixnet.net Oracle PLSQL: Primary Keys - TechOnTheNet
This Oracle tutorial explains how to create, change, drop, disable, and enable a primary key in Oracle with syntax and examples. In Oracle, a primary key is a ... https://www.techonthenet.com SQL FOREIGN KEY Constraint - W3Schools
The "PersonID" column in the "Persons" table is the PRIMARY KEY in the ... OrderID int NOT NULL PRIMARY KEY, ... ADD CONSTRAINT FK_PersonOrder https://www.w3schools.com SQL PRIMARY KEY Constraint - W3Schools
ADD CONSTRAINT PK_Person PRIMARY KEY (ID,LastName);. Note: If you use the ALTER TABLE statement to add a primary key, the primary key column(s) ... https://www.w3schools.com SQL PRIMARY KEY 约束 - W3school
ALTER TABLE Persons ADD CONSTRAINT pk_PersonID PRIMARY KEY (Id_P,LastName). 注释：如果您使用ALTER TABLE 语句添加主键，必须把主键列声明 ... https://www.w3school.com.cn SQL Server: Primary Keys - TechOnTheNet
Learn how to create, change, drop, disable, and enable a primary key in SQL ... ALTER TABLE table_name ADD CONSTRAINT constraint_name PRIMARY KEY ... https://www.techonthenet.com SQL: Primary Keys - TechOnTheNet
This SQL tutorial explains how to create and drop a primary key in SQL with syntax and examples. In SQL, a primary key is a single field or combination of fields ... https://www.techonthenet.com [SQL] SQL指令重點整理(三)：SQL限制(SQL Constraint)之介紹 ...
alter table Employee drop constraint chk_Employee;. ○ primary key(主鍵限制)：Primary Key中的每一筆資料都是表格中的唯一 ... https://peimei0808.pixnet.net 建立主索引鍵- SQL Server | Microsoft Docs
TransactionHistoryArchive ADD CONSTRAINT PK_TransactionHistoryArchive_TransactionID PRIMARY KEY CLUSTERED (TransactionID); ... https://docs.microsoft.com |