Adding upstream version 15.5.upstream/15.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-05-04 12:17:33 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-05-04 12:17:33 +0000
commit: 5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch)
tree: 739caf8c461053357daa9f162bef34516c7bf452 /doc/src/sgml/html/infoschema-attributes.html
parent: Initial commit. (diff)
download: postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz
postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>37.6. attributes</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="infoschema-applicable-roles.html" title="37.5. applicable_roles" /><link rel="next" href="infoschema-character-sets.html" title="37.7. character_sets" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">37.6. <code class="literal">attributes</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="infoschema-applicable-roles.html" title="37.5. applicable_roles">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="information-schema.html" title="Chapter 37. The Information Schema">Up</a></td><th width="60%" align="center">Chapter 37. The Information Schema</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="infoschema-character-sets.html" title="37.7. character_sets">Next</a></td></tr></table><hr /></div><div class="sect1" id="INFOSCHEMA-ATTRIBUTES"><div class="titlepage"><div><div><h2 class="title" style="clear: both">37.6. <code class="literal">attributes</code></h2></div></div></div><p>
+   The view <code class="literal">attributes</code> contains information about
+   the attributes of composite data types defined in the database.
+   (Note that the view does not give information about table columns,
+   which are sometimes called attributes in PostgreSQL contexts.)
+   Only those attributes are shown that the current user has access to (by way
+   of being the owner of or having some privilege on the type).
+  </p><div class="table" id="id-1.7.6.10.3"><p class="title"><strong>Table 37.4. <code class="structname">attributes</code> Columns</strong></p><div class="table-contents"><table class="table" summary="attributes Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
+       Column Type
+      </p>
+      <p>
+       Description
+      </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">udt_catalog</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the database containing the data type (always the current database)
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">udt_schema</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the schema containing the data type
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">udt_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the data type
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">attribute_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the attribute
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">ordinal_position</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       Ordinal position of the attribute within the data type (count starts at 1)
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">attribute_default</code> <code class="type">character_data</code>
+      </p>
+      <p>
+       Default expression of the attribute
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">is_nullable</code> <code class="type">yes_or_no</code>
+      </p>
+      <p>
+       <code class="literal">YES</code> if the attribute is possibly nullable,
+       <code class="literal">NO</code> if it is known not nullable.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">data_type</code> <code class="type">character_data</code>
+      </p>
+      <p>
+       Data type of the attribute, if it is a built-in type, or
+       <code class="literal">ARRAY</code> if it is some array (in that case, see
+       the view <code class="literal">element_types</code>), else
+       <code class="literal">USER-DEFINED</code> (in that case, the type is
+       identified in <code class="literal">attribute_udt_name</code> and
+       associated columns).
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">character_maximum_length</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies a character or bit
+       string type, the declared maximum length; null for all other
+       data types or if no maximum length was declared.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">character_octet_length</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies a character type,
+       the maximum possible length in octets (bytes) of a datum; null
+       for all other data types.  The maximum octet length depends on
+       the declared character maximum length (see above) and the
+       server encoding.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">character_set_catalog</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">character_set_schema</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">character_set_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">collation_catalog</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the database containing the collation of the attribute
+       (always the current database), null if default or the data type
+       of the attribute is not collatable
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">collation_schema</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the schema containing the collation of the attribute,
+       null if default or the data type of the attribute is not
+       collatable
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">collation_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the collation of the attribute, null if default or the
+       data type of the attribute is not collatable
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">numeric_precision</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies a numeric type, this
+       column contains the (declared or implicit) precision of the
+       type for this attribute.  The precision indicates the number of
+       significant digits.  It can be expressed in decimal (base 10)
+       or binary (base 2) terms, as specified in the column
+       <code class="literal">numeric_precision_radix</code>.  For all other data
+       types, this column is null.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">numeric_precision_radix</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies a numeric type, this
+       column indicates in which base the values in the columns
+       <code class="literal">numeric_precision</code> and
+       <code class="literal">numeric_scale</code> are expressed.  The value is
+       either 2 or 10.  For all other data types, this column is null.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">numeric_scale</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies an exact numeric
+       type, this column contains the (declared or implicit) scale of
+       the type for this attribute.  The scale indicates the number of
+       significant digits to the right of the decimal point.  It can
+       be expressed in decimal (base 10) or binary (base 2) terms, as
+       specified in the column
+       <code class="literal">numeric_precision_radix</code>.  For all other data
+       types, this column is null.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">datetime_precision</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies a date, time,
+       timestamp, or interval type, this column contains the (declared
+       or implicit) fractional seconds precision of the type for this
+       attribute, that is, the number of decimal digits maintained
+       following the decimal point in the seconds value.  For all
+       other data types, this column is null.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">interval_type</code> <code class="type">character_data</code>
+      </p>
+      <p>
+       If <code class="literal">data_type</code> identifies an interval type,
+       this column contains the specification which fields the
+       intervals include for this attribute, e.g., <code class="literal">YEAR TO
+       MONTH</code>, <code class="literal">DAY TO SECOND</code>, etc.  If no
+       field restrictions were specified (that is, the interval
+       accepts all fields), and for all other data types, this field
+       is null.
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">interval_precision</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       Applies to a feature not available
+       in <span class="productname">PostgreSQL</span>
+       (see <code class="literal">datetime_precision</code> for the fractional
+       seconds precision of interval type attributes)
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">attribute_udt_catalog</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the database that the attribute data type is defined in
+       (always the current database)
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">attribute_udt_schema</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the schema that the attribute data type is defined in
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">attribute_udt_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Name of the attribute data type
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">scope_catalog</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">scope_schema</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">scope_name</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">maximum_cardinality</code> <code class="type">cardinal_number</code>
+      </p>
+      <p>
+       Always null, because arrays always have unlimited maximum cardinality in <span class="productname">PostgreSQL</span>
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">dtd_identifier</code> <code class="type">sql_identifier</code>
+      </p>
+      <p>
+       An identifier of the data type descriptor of the column, unique
+       among the data type descriptors pertaining to the table.  This
+       is mainly useful for joining with other instances of such
+       identifiers.  (The specific format of the identifier is not
+       defined and not guaranteed to remain the same in future
+       versions.)
+      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
+       <code class="structfield">is_derived_reference_attribute</code> <code class="type">yes_or_no</code>
+      </p>
+      <p>
+       Applies to a feature not available in <span class="productname">PostgreSQL</span>
+      </p></td></tr></tbody></table></div></div><br class="table-break" /><p>
+   See also under <a class="xref" href="infoschema-columns.html" title="37.17. columns">Section 37.17</a>, a similarly
+   structured view, for further information on some of the columns.
+  </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="infoschema-applicable-roles.html" title="37.5. applicable_roles">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="information-schema.html" title="Chapter 37. The Information Schema">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="infoschema-character-sets.html" title="37.7. character_sets">Next</a></td></tr><tr><td width="40%" align="left" valign="top">37.5. <code class="literal">applicable_roles</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 37.7. <code class="literal">character_sets</code></td></tr></table></div></body></html>
+\ No newline at end of file
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-05-04 12:17:33 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-05-04 12:17:33 +0000
commit	5e45211a64149b3c659b90ff2de6fa982a5a93ed (patch)
tree	739caf8c461053357daa9f162bef34516c7bf452 /doc/src/sgml/html/infoschema-attributes.html
parent	Initial commit. (diff)
download	postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.tar.xz postgresql-15-5e45211a64149b3c659b90ff2de6fa982a5a93ed.zip