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Use "TOAST table" in place of the vague, not-used-elsewhere phrase 

"supplementary storage table".
This commit is contained in:
Tom Lane 2010-05-13 18:54:18 +00:00
parent 9ead05b7c3
commit a4bbfb1aac
2 changed files with 17 additions and 15 deletions
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11
doc/src/sgml/ref/alter_table.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.112 2010/04/03 07:22:57 petere Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/alter_table.sgml,v 1.113 2010/05/13 18:54:18 tgl Exp $
PostgreSQL documentation
-->
@ -200,7 +200,8 @@ ALTER TABLE <replaceable class="PARAMETER">name</replaceable>
<listitem>
<para>
This form sets the storage mode for a column. This controls whether this
column is held inline or in a supplementary table, and whether the data
column is held inline or in a secondary <acronym>TOAST</> table, and
whether the data
should be compressed or not. <literal>PLAIN</literal> must be used
for fixed-length values such as <type>integer</type> and is
inline, uncompressed. <literal>MAIN</literal> is for inline,
@ -208,9 +209,9 @@ ALTER TABLE <replaceable class="PARAMETER">name</replaceable>
uncompressed data, and <literal>EXTENDED</literal> is for external,
compressed data. <literal>EXTENDED</literal> is the default for most
data types that support non-<literal>PLAIN</literal> storage.
Use of <literal>EXTERNAL</literal> will
make substring operations on <type>text</type> and <type>bytea</type>
columns faster, at the penalty of increased storage space. Note that
Use of <literal>EXTERNAL</literal> will make substring operations on
very large <type>text</type> and <type>bytea</type> values run faster,
at the penalty of increased storage space. Note that
<literal>SET STORAGE</> doesn't itself change anything in the table,
it just sets the strategy to be pursued during future table updates.
See <xref linkend="storage-toast"> for more information.

21
doc/src/sgml/ref/create_table.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_table.sgml,v 1.126 2010/04/16 02:22:33 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/create_table.sgml,v 1.127 2010/05/13 18:54:18 tgl Exp $
PostgreSQL documentation
-->
@ -152,7 +152,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } ] TABLE <replaceable class="PAR
table is going to be used in complex queries, it is wise to run
<command>ANALYZE</> on the temporary table after it is populated.
</para>
<para>
Optionally, <literal>GLOBAL</literal> or <literal>LOCAL</literal>
can be written before <literal>TEMPORARY</> or <literal>TEMP</>.
@ -803,13 +803,15 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } ] TABLE <replaceable class="PAR
for tables, and for indexes associated with a <literal>UNIQUE</literal>,
<literal>PRIMARY KEY</literal>, or <literal>EXCLUDE</> constraint.
Storage parameters for
indexes are documented in <xref linkend="SQL-CREATEINDEX">. The storage parameters currently
indexes are documented in <xref linkend="SQL-CREATEINDEX">.
The storage parameters currently
available for tables are listed below. For each parameter, unless noted,
there is an additional, identically named parameter, prefixed with
<literal>toast.</literal> which can be used to control the behavior of the
supplementary storage table, if any; see <xref linkend="storage-toast">.
Note that the supplementary storage table inherits the
<literal>autovacuum</literal> values from its parent table, if there are
there is an additional parameter with the same name prefixed with
<literal>toast.</literal>, which can be used to control the behavior of the
table's secondary <acronym>TOAST</> table, if any
(see <xref linkend="storage-toast"> for more information about TOAST).
Note that the TOAST table inherits the
<literal>autovacuum_*</literal> values from its parent table, if there are
no <literal>toast.autovacuum_*</literal> settings set.
</para>
@ -828,8 +830,7 @@ CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } ] TABLE <replaceable class="PAR
original, which is more efficient than placing it on a different page.
For a table whose entries are never updated, complete packing is the
best choice, but in heavily updated tables smaller fillfactors are
appropriate. This parameter cannot be set for the supplementary
storage table.
appropriate. This parameter cannot be set for TOAST tables.
</para>
</listitem>
</varlistentry>