Re: Composite Keys

Alvaro,

I am using VB.NET. How to enable locking from within VB.NET for PostgreSQL?
Which command need to be executed?

Alvaro Herrera-7 wrote:
>
>>Lock the table beforehand. Only one user can be getting the
>>max(ReceiptNo) that way.
>
>>Alternatively, you could use userlocks, so that you can lock, generate
>>the number, unlock. And you can use it to lock that particular BookNo,
>>not the whole table. (In Postgres 8.2 the facility is called "advisory
>>locks" and comes with the core code; in older releases it's in contrib
>>and it's called "userlock").
>
> --
> Alvaro Herrera
> http://www.CommandPrompt.com/
> The PostgreSQL Company - Command Prompt, Inc.
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