Set auto-increment fields in SQL Server

Source: Internet
Author: User
What is the auto-increment field in SQL Server (like the serial number sequence in Oracle? How to use it?

1. Create Table Name (
Field name [int] identity (1, 1) not null,
...
)

2. in SQL Server, All Integer columns can be defined as self-incrementing columns, which are called "identifiers ",
It sets "id seed" and "id increment" to implement the function.
Example:

Column type identity seed identity Increment
--------------------------------
Test tinyint √ 1 1

When you insert a row, the value is automatically assigned from 1. (1, 2, 3, 4 ...... 255)

Method:
1. Select a table;
2. Right-click the mouse and design it;
3. Selected columns (integer type)
4. Set the ID to "yes" (No by default), Id seed, and Id increment (generally 1 ).

Note: SQL Server 2000 is easier to use and provides a full Chinese version of the interface for clearer classification.
**************************************** *********************************
To implement auto-increment fields in Oracle, you can use create sequence Sid minvalue 1 maxvalue 10000000; To implement auto-increment of SID columns.

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.