Re: [HACKERS] AUTO_INCREMENT suggestion

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От Mattias Kregert
Тема Re: [HACKERS] AUTO_INCREMENT suggestion
Дата
Msg-id 34FFD3DA.4260663C@algonet.se
обсуждение исходный текст
Ответ на AUTO_INCREMENT suggestion  ("D. Dante Lorenso" <dlorenso@afai.com>)
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D. Dante Lorenso wrote:
>
> To aid those of us that don't want to use sequences, can we add a
> feature to 6.4 that allows the use of an AUTO_INCREMENT statement
> when defining tables?  MySQL does this, and I like it.  It resembles
> the Autonumber feature in Access as well.
>
> create table tblFirm (
>     FirmID int PRIMARY KEY AUTO_INCREMENT,
>     FirmTypeID int,
>     FirmName varchar(64) NOT NULL,
>     FirmAlpha char(20) NOT NULL UNIQUE,
>     FirmURL varchar(64),
>     FirmEmail varchar(64)
> );
>
> Just yet another suggestion.
>
> Dante

Since the PRIMARY KEY is implemented by creating an unique index
on the field, it should be easy to implement AUTO_INCREMENT by
automagically creating a sequence and setting it as the default for
this field.

Was PRIMARY KEY implemented in the parser?

/* m */

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