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SERIAL no longer creates an index by default, as of 7.3.

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Bruce Momjian
2003-11-19 16:50:48 +00:00
parent cfeca62148
commit 022da0ed7a
2 changed files with 5 additions and 7 deletions
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doc/FAQ
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Frequently Asked Questions (FAQ) for PostgreSQL Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Sat Nov 15 23:41:03 EST 2003 Last updated: Wed Nov 19 11:50:04 EST 2003
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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4.15.1) How do I create a serial/auto-incrementing field? 4.15.1) How do I create a serial/auto-incrementing field?
PostgreSQL supports a SERIAL data type. It auto-creates a sequence and PostgreSQL supports a SERIAL data type. It auto-creates a sequence.
index on the column. For example, this: For example, this:
CREATE TABLE person ( CREATE TABLE person (
id SERIAL, id SERIAL,
name TEXT name TEXT
@ -892,7 +892,6 @@ BYTEA bytea variable-length byte array (null-byte safe)
id INT4 NOT NULL DEFAULT nextval('person_id_seq'), id INT4 NOT NULL DEFAULT nextval('person_id_seq'),
name TEXT name TEXT
); );
CREATE UNIQUE INDEX person_id_key ON person ( id );
See the create_sequence manual page for more information about See the create_sequence manual page for more information about
sequences. You can also use each row's OID field as a unique value. sequences. You can also use each row's OID field as a unique value.

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doc/src/FAQ/FAQ.html
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alink="#0000ff"> alink="#0000ff">
<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1> <H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
<P>Last updated: Sat Nov 15 23:41:03 EST 2003</P> <P>Last updated: Wed Nov 19 11:50:04 EST 2003</P>
<P>Current maintainer: Bruce Momjian (<A href= <P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR> "mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)<BR>
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serial/auto-incrementing field?</H4> serial/auto-incrementing field?</H4>
<P>PostgreSQL supports a <SMALL>SERIAL</SMALL> data type. It <P>PostgreSQL supports a <SMALL>SERIAL</SMALL> data type. It
auto-creates a sequence and index on the column. For example, auto-creates a sequence. For example,
this:</P> this:</P>
<PRE> <PRE>
CREATE TABLE person ( CREATE TABLE person (
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id INT4 NOT NULL DEFAULT nextval('person_id_seq'), id INT4 NOT NULL DEFAULT nextval('person_id_seq'),
name TEXT name TEXT
); );
CREATE UNIQUE INDEX person_id_key ON person ( id );
</PRE> </PRE>
See the <I>create_sequence</I> manual page for more information See the <I>create_sequence</I> manual page for more information