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SGML improvements.

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Neil Conway
This commit is contained in:
Bruce Momjian
2002-11-15 03:11:18 +00:00
parent 8bc717cb88
commit da8149032a
29 changed files with 405 additions and 364 deletions
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20
doc/src/sgml/ref/explain.sgml
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@@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.20 2002/04/21 19:02:39 thomas Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/explain.sgml,v 1.21 2002/11/15 03:11:18 momjian Exp $
PostgreSQL documentation
-->
@@ -87,7 +87,7 @@ EXPLAIN [ ANALYZE ] [ VERBOSE ] <replaceable class="PARAMETER">query</replaceabl
<note>
<para>
Prior to <application>PostgreSQL</application> 7.3, the query plan
Prior to <productname>PostgreSQL</productname> 7.3, the query plan
was emitted in the form of a NOTICE message. Now it appears as a
query result (formatted like a table with a single text column).
</para>
@@ -105,12 +105,12 @@ EXPLAIN [ ANALYZE ] [ VERBOSE ] <replaceable class="PARAMETER">query</replaceabl
<para>
This command displays the execution plan that the
<application>PostgreSQL</application> planner
generates for the supplied query. The execution plan shows how
the table(s) referenced by the query will be scanned---by plain
sequential scan, index scan, etc.---and if multiple tables are
referenced, what join algorithms will be used to bring together
the required tuples from each input table.
<productname>PostgreSQL</productname> planner generates for the
supplied query. The execution plan shows how the table(s)
referenced by the query will be scanned---by plain sequential scan,
index scan, etc.---and if multiple tables are referenced, what join
algorithms will be used to bring together the required tuples from
each input table.
</para>
<para>
@@ -156,7 +156,7 @@ ROLLBACK;
The VERBOSE option emits the full internal representation of the plan tree,
rather than just a summary.
Usually this option is only useful for debugging
<application>PostgreSQL</application>. The VERBOSE dump is either
<productname>PostgreSQL</productname>. The VERBOSE dump is either
pretty-printed or not, depending on the setting of the
<option>EXPLAIN_PRETTY_PRINT</option> configuration parameter.
</para>
@@ -232,7 +232,7 @@ EXPLAIN SELECT sum(i) FROM foo WHERE i &lt; 10;
<para>
Note that the specific numbers shown, and even the selected query
strategy, may vary between <application>PostgreSQL</application>
strategy, may vary between <productname>PostgreSQL</productname>
releases due to planner improvements.
</para>
</refsect1>