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