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Doc: subdivide System Information Functions and Operators.

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Provide <sect2> subdivisions in 9.26 System Information Functions and
Operators.  This is useful because it adds a mini-TOC at the top of
the page to aid jumping to portions of what's become quite a long
section.  Also, now that several of the subsections contain multiple
tables, it's hard to see the overall structure without headings.

Discussion: https://postgr.es/m/4026789.1670426602@sss.pgh.pa.us
This commit is contained in:
Tom Lane 2022-12-07 13:56:48 -05:00
parent 5e9b122059
commit 3b31821953
1 changed files with 50 additions and 0 deletions
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doc/src/sgml/func.sgml
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@ -22168,6 +22168,14 @@ SELECT * FROM pg_ls_dir('.') WITH ORDINALITY AS t(ls,n);
<sect1 id="functions-info">
<title>System Information Functions and Operators</title>
<para>
The functions described in this section are used to obtain various
information about a <productname>PostgreSQL</productname> installation.
</para>
<sect2 id="functions-info-session">
<title>Session Information Functions</title>
<para>
<xref linkend="functions-info-session-table"/> shows several
functions that extract session and system information.
@ -22711,6 +22719,11 @@ SELECT * FROM pg_ls_dir('.') WITH ORDINALITY AS t(ls,n);
does not, since it unifies users and roles into a single kind of entity.)
</para>
</sect2>
<sect2 id="functions-info-access">
<title>Access Privilege Inquiry Functions</title>
<indexterm>
<primary>privilege</primary>
<secondary>querying</secondary>
@ -23256,6 +23269,11 @@ SELECT has_function_privilege('joeuser', 'myfunc(int, text)', 'execute');
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-schema">
<title>Schema Visibility Inquiry Functions</title>
<para>
<xref linkend="functions-info-schema-table"/> shows functions that
determine whether a certain object is <firstterm>visible</firstterm> in the
@ -23483,6 +23501,11 @@ SELECT pg_type_is_visible('myschema.widget'::regtype);
type name in this way &mdash; if the name can be recognized at all, it must be visible.
</para>
</sect2>
<sect2 id="functions-info-catalog">
<title>System Catalog Information Functions</title>
<para>
<xref linkend="functions-info-catalog-table"/> lists functions that
extract information from the system catalogs.
@ -24421,6 +24444,11 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-object">
<title>Object Information and Addressing Functions</title>
<para>
<xref linkend="functions-info-object-table"/> lists functions related to
database object identification and addressing.
@ -24554,6 +24582,11 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-comment">
<title>Comment Information Functions</title>
<indexterm>
<primary>comment</primary>
<secondary sortas="database objects">about database objects</secondary>
@ -24648,6 +24681,11 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-snapshot">
<title>Transaction ID and Snapshot Information Functions</title>
<para>
The functions shown in <xref linkend="functions-pg-snapshot"/>
provide server transaction information in an exportable form. The main
@ -25003,6 +25041,11 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-commit-timestamp">
<title>Committed Transaction Information Functions</title>
<para>
The functions shown in <xref linkend="functions-commit-timestamp"/>
provide information about when past transactions were committed.
@ -25075,6 +25118,11 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
<sect2 id="functions-info-controldata">
<title>Control Data Functions</title>
<para>
The functions shown in <xref linkend="functions-controldata"/>
print information initialized during <command>initdb</command>, such
@ -25413,6 +25461,8 @@ SELECT collation for ('foo' COLLATE "de_DE");
</tgroup>
</table>
</sect2>
</sect1>
<sect1 id="functions-admin">