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Re: [SQL] Autogenerated Unique Index

From: "Antonio W(dot) Lagnada" <alagnada(at)lsil(dot)com>
To: Trurl McByte <trurl(at)realtor3d(dot)odessa(dot)ua>
Cc: Andrzej Mazurkiewicz <andrzej(dot)mazurkiewicz(at)polkomtel(dot)com(dot)pl>, Pgsql-sql <pgsql-sql(at)postgreSQL(dot)org>
Subject: Re: [SQL] Autogenerated Unique Index
Date: 2000-03-07 16:46:09
Message-ID: 38C53251.DF6715B8@lsil.com (view raw or flat)
Thread:
Lists: pgsql-sql
Hi Trurl,

#CREATE SEQUENCE A_B_seq;
#CREATE TABLE A (
#       B int DEFAULT nextval('A_B_seq') NOT NULL,
#       C char(5),
#       PRIMARY KEY(B)
#);

I think the above is what I'm looking for....Thanks to All :-)

Trurl McByte wrote:

> On Tue, 7 Mar 2000 (Today), Antonio W. Lagnada wrote:
>
> Try "serial" macro-type off "id" field.
>
> #CREATE TABLE A (
> #       B serial,
> #       C char(5)
> #);
> NOTICE:  CREATE TABLE will create implicit sequence 'a_b_seq' for SERIAL column'a.b'
> NOTICE:  CREATE TABLE/UNIQUE will create implicit index 'a_b_key' for table 'a'
> CREATE
>
> Or make it by hand:
>
> #CREATE SEQUENCE A_B_seq;
> #CREATE TABLE A (
> #       B int DEFAULT nextval('A_B_seq') NOT NULL,
> #       C char(5),
> #       PRIMARY KEY(B)
> #);
> NOTICE:  CREATE TABLE/PRIMARY KEY will create implicit index 'a_pkey' for table'a'
> CREATE
>
>   AWL> Hi Andrzej,
>   AWL>
>   AWL> Does this mean that everytime I create a new record on the table, the field
>   AWL> "B" will be automatically incremented?
>   AWL>
>   AWL> - Antonio
>   AWL>
>   AWL> Andrzej Mazurkiewicz wrote:
>   AWL>
>   AWL> > cfmg_adm=> CREATE TABLE A (
>   AWL> > cfmg_adm(>        B int NOT NULL,
>   AWL> > cfmg_adm(>        C char(5),
>   AWL> > cfmg_adm(> PRIMARY KEY (B)
>   AWL> > cfmg_adm(> );
>   AWL> > NOTICE:  CREATE TABLE/PRIMARY KEY will create implicit index 'a_pkey' for
>   AWL> > table
>   AWL> > 'a'
>   AWL> > CREATE
>   AWL> > cfmg_adm=>
>   AWL> > Regards,
>   AWL> > Andrzej Mazurkiewicz
>   AWL> >
>   AWL> > > -----Original Message-----
>   AWL> > > From: Antonio W. Lagnada [SMTP:alagnada(at)lsil(dot)com]
>   AWL> > > Sent: 7 marca 2000 14:41
>   AWL> > > To:   Pgsql-sql
>   AWL> > > Subject:      [SQL] Autogenerated Unique Index
>   AWL> > >
>   AWL> > > Can someone give me a step-by-step instructions on how to generate a
>   AWL> > > unique autogenerated index in PostgreSQL?
>   AWL> > >
>   AWL> > > --
>   AWL> > > Antonio W. Lagnada
>   AWL> > >
>   AWL> > >
>   AWL> > > 952.921.8533
>   AWL> > > alagnada(at)lsil(dot)com_NOSPAM
>   AWL> > > Remove the _NOSPAM for
>   AWL> > > the actual email address
>   AWL> > >  << File: Card for Antonio W. Lagnada >>
>   AWL>
>   AWL> --
>   AWL> Antonio W. Lagnada
>   AWL>
>   AWL> 952.921.8533
>   AWL> alagnada(at)lsil(dot)com_NOSPAM
>   AWL> Remove the _NOSPAM for
>   AWL> the actual email address
>   AWL>
>   AWL>
>
> --
>       Trurl McByte, Capt. of StasisCruiser "Prince"
> |InterNIC: AR3200                   RIPE: AR1627-RIPE|
> |--98 C3 78 8E 90 E3 01 35  87 1F 3F EF FD 6D 84 B3--|

--
Antonio W. Lagnada
Silicon Optimization

952.921.8533
alagnada(at)lsil(dot)com_NOSPAM
Remove the _NOSPAM for
the actual email address


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