auto-increment

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Minimum length for auto increment ID field in MySQL

How can I set a minimum length for my primary key ID which is auto incremented. Now the auto increment starts at 1 and goes up from there. However I would li开发者_StackOverflowke the id to be at leas[详细]

2023-03-03 03:08 分类：问答
Concurrent incrementation of integer column on update with NHibernate

I have a Posts table with a Version number column to keep track of the nth revision for each record. Every time a row is updated, I would like its Version number to be incremented.[详细]

2023-02-28 16:30 分类：问答
adding a user and selecting that user id from the DB in 1 query

What i would like to do is add a user to the DB. I have an id that auto-increments each time a user is added, but the problem is that i would like to get the id back from the user i just added and i w[详细]

2023-02-28 09:31 分类：问答
How can I setup SQL server to generate grouped indexes?

Say I have a Projects table in a database to track active projects, as well as a Tasks table that tracks the Tasks for each Project. Each table has a normal auto generated primary key, however I also[详细]

2023-02-28 00:17 分类：问答
mysql merge 2 tables,same structure, overlapping values in keys (auto_increment)

I have two tables, with the same structure, order_old and order_new. Key field on both is order_id which is auto_increment. order_old has 590 records in it, order_new has 100; I want to copy/add all t[详细]

2023-02-27 11:14 分类：问答
php manual increment membership no

i\'ve got hundreds of people joining my website and create an membership id for them. i just created a new column in the database called user_no.[详细]

2023-02-27 06:22 分类：问答
mysql auto_increment column increments by a random value

Today I\'ve encountered one of the str开发者_如何学JAVAangest things with MySQL I\'ve seen. I have a trivial table:[详细]

2023-02-27 03:37 分类：问答
MySQL: any way to have a column defaults to auto-increment (or copy from an auto-increment field) but still allow other values to be inserted?

I\'m building a Q&A site. I want to store both questions and answers in the same table: CREATE TABLE Q_n_A ([详细]

2023-02-24 08:19 分类：问答
auto increment option

I need开发者_开发技巧 to set the auto increment option for a particular column in a row of a database to be true so that the value increments each time a new row is inserted.[详细]

2023-02-23 22:47 分类：问答
Help needed for inserting values to a mysql table

I have created a table using mysql: CREATE TABLE JobCard ( ID INT NOT NULL AUTO_INCREMENT PRIMARY KEY, JobNo Long,[详细]

2023-02-23 10:44 分类：问答