git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml

index a404a9c6141695f63eb464cf98e59927c9a62e49..670026d591e8f8e4d14937554950e3dc809ad7e6 100644 (file)

--- a/doc/src/sgml/ddl.sgml

+++ b/doc/src/sgml/ddl.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/ddl.sgml,v 1.58 2006年07月02日 01:58:36 momjian Exp $ -->

+<!-- $PostgreSQL: pgsql/doc/src/sgml/ddl.sgml,v 1.59 2006年07月03日 16:43:14 tgl Exp $ -->

<chapter id="ddl">

<title>Data Definition</title>

parent. Similarly an inheritance link can be removed from a child using the

<command>ALTER TABLE</command> using the <command>NO INHERIT</command>

subform.

+ </para>

<para>

One convenient way to create a compatible table to be a new child is using

caveat below regarding constraints). Alternatively a compatible table can

be created by first creating a new child using <command>CREATE

TABLE</command> then removing the inheritance link with <command>ALTER

- TABLE</command>. </para>

+ TABLE</command>.

+ </para>

<para>

A parent table cannot be dropped while any

be accessed for a query. Whereas the alternative, adding those columns

to every index, increases space usage which can erase any

performance gain.

- <para>

+ </para>

<para>

When most of the heavily accessed area of the table is in a single