primary-key

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Get a List of all Primary Keys in a Database

Is this the best way to - Get a List of all Primary Keys in a Database - or is there something better?[详细]

2023-03-08 11:19 分类：问答
Add primary key to table based on timestamp

Let us say we have the following table structure and values: FooTable: foo1foo2timestamp 111 221 212 Currently there is no primary key constraint on the table.[详细]

2023-03-07 17:25 分类：问答
Is there a smart way to append a number to an PK identity column in a Relational database w/o total catastrophe?

It\'s far from the ideal situation, but I need to fix a database by appending the number \"1\" to the PK Identiy column which has FK relations to four other tables. I\'m basically making a four digit[详细]

2023-03-06 15:38 分类：问答
Primary key and unique key in django

I had a custom primary key that need to be set up on a particular data in a model. This was not enough, as an attempt to insert a duplicate number succeeded. So now when i replace primary_key=True t[详细]

2023-03-06 11:43 分类：问答
Primary key check in django

I have this custom primary key in a model: class Personal(models.Model): name = models.CharField(max_length=20,primary_key=True)[详细]

2023-03-06 08:32 分类：问答
"No primary keys" error in NetBeans

In NetBeans7 when I\'m trying to add \"Entity Classes from Database\" the following problem occurs: some of the tables on the left are greyed out and marked \"(no primary keys)\", so I can\'t add them[详细]

2023-03-05 18:08 分类：问答
How do I write a SQL query to detect duplicate primary keys?

Suppose I want to alter the table so that my primary keys are as follows user_id ,round ,tournament_id[详细]

2023-03-04 16:56 分类：问答
Primary keys in a logging database

I\'m creating a database that is going to be logging PC usage. There will be several entries of the format: Computer, User, AuditTime. It is for keeping track of who was logged in to what computer at[详细]

2023-03-03 18:20 分类：问答
rails3 bigint primary key

I would like to create a bigint (or string or whatever that is not int) typed primary key field under Rails 3.[详细]

2023-03-03 06:01 分类：问答
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