I meet some errors when using auto_increment in MySQL. code is here: user_id bigint(20) unsigned not null auto_increment=1000
Let\'s say my website will be like Facebook which has a lot of entry everyday. So the entry for the field of auto increment id in database should be a lot lot lot. Instead of INT w开发者_开发百科ithou
I want to im开发者_JAVA技巧plement a class Address that, when created, initializes its field addr to a unique value. That value has to increment by one every time I create an Address instance.
In Rails, I\'m looking for a way to generate an auto-incrementing serial number for internal record keeping for new instances of a model. I would like to avoid creating database specific code and rath
I would like to create a unique hash of an AUTO-INCREMENT field while inserting that row. Something like:
I would like to run a migration to create a User table that starts counting from 10000 for the user_id column. I would like to avoid using DB specific syntax via the execute method, because my product
In my JPA+Hibernate+MySQL app I have an entity like so: @Entity public class Room { @Id @GeneratedValue private long id;
I would like to force the auto increment field of a table to some value, I tried with this: ALTER开发者_C百科 TABLE product AUTO_INCREMENT = 1453
Could it somehow happen that MySQL generates the same autoincrement ID twice? We have the following situation:
I have a table with an auto-increment ID field as shown below. +------------+-------------------------------------+
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