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2 <!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>35.33. parameters</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-key-column-usage.html" title="35.32. key_column_usage" /><link rel="next" href="infoschema-referential-constraints.html" title="35.34. referential_constraints" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">35.33. <code class="literal">parameters</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="infoschema-key-column-usage.html" title="35.32. key_column_usage">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="information-schema.html" title="Chapter 35. The Information Schema">Up</a></td><th width="60%" align="center">Chapter 35. The Information Schema</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="infoschema-referential-constraints.html" title="35.34. referential_constraints">Next</a></td></tr></table><hr /></div><div class="sect1" id="INFOSCHEMA-PARAMETERS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">35.33. <code class="literal">parameters</code> <a href="#INFOSCHEMA-PARAMETERS" class="id_link">#</a></h2></div></div></div><p>
3 The view <code class="literal">parameters</code> contains information about
4 the parameters (arguments) of all functions in the current database.
5 Only those functions are shown that the current user has access to
6 (by way of being the owner or having some privilege).
7 </p><div class="table" id="id-1.7.6.37.3"><p class="title"><strong>Table 35.31. <code class="structname">parameters</code> Columns</strong></p><div class="table-contents"><table class="table" summary="parameters Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
12 </p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
13 <code class="structfield">specific_catalog</code> <code class="type">sql_identifier</code>
16 Name of the database containing the function (always the current database)
17 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
18 <code class="structfield">specific_schema</code> <code class="type">sql_identifier</code>
21 Name of the schema containing the function
22 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
23 <code class="structfield">specific_name</code> <code class="type">sql_identifier</code>
26 The <span class="quote">“<span class="quote">specific name</span>”</span> of the function. See <a class="xref" href="infoschema-routines.html" title="35.45. routines">Section 35.45</a> for more information.
27 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
28 <code class="structfield">ordinal_position</code> <code class="type">cardinal_number</code>
31 Ordinal position of the parameter in the argument list of the
32 function (count starts at 1)
33 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
34 <code class="structfield">parameter_mode</code> <code class="type">character_data</code>
37 <code class="literal">IN</code> for input parameter,
38 <code class="literal">OUT</code> for output parameter,
39 and <code class="literal">INOUT</code> for input/output parameter.
40 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
41 <code class="structfield">is_result</code> <code class="type">yes_or_no</code>
44 Applies to a feature not available in <span class="productname">PostgreSQL</span>
45 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
46 <code class="structfield">as_locator</code> <code class="type">yes_or_no</code>
49 Applies to a feature not available in <span class="productname">PostgreSQL</span>
50 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
51 <code class="structfield">parameter_name</code> <code class="type">sql_identifier</code>
54 Name of the parameter, or null if the parameter has no name
55 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
56 <code class="structfield">data_type</code> <code class="type">character_data</code>
59 Data type of the parameter, if it is a built-in type, or
60 <code class="literal">ARRAY</code> if it is some array (in that case, see
61 the view <code class="literal">element_types</code>), else
62 <code class="literal">USER-DEFINED</code> (in that case, the type is
63 identified in <code class="literal">udt_name</code> and associated
65 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
66 <code class="structfield">character_maximum_length</code> <code class="type">cardinal_number</code>
69 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
70 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
71 <code class="structfield">character_octet_length</code> <code class="type">cardinal_number</code>
74 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
75 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
76 <code class="structfield">character_set_catalog</code> <code class="type">sql_identifier</code>
79 Applies to a feature not available in <span class="productname">PostgreSQL</span>
80 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
81 <code class="structfield">character_set_schema</code> <code class="type">sql_identifier</code>
84 Applies to a feature not available in <span class="productname">PostgreSQL</span>
85 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
86 <code class="structfield">character_set_name</code> <code class="type">sql_identifier</code>
89 Applies to a feature not available in <span class="productname">PostgreSQL</span>
90 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
91 <code class="structfield">collation_catalog</code> <code class="type">sql_identifier</code>
94 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
95 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
96 <code class="structfield">collation_schema</code> <code class="type">sql_identifier</code>
99 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
100 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
101 <code class="structfield">collation_name</code> <code class="type">sql_identifier</code>
104 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
105 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
106 <code class="structfield">numeric_precision</code> <code class="type">cardinal_number</code>
109 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
110 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
111 <code class="structfield">numeric_precision_radix</code> <code class="type">cardinal_number</code>
114 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
115 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
116 <code class="structfield">numeric_scale</code> <code class="type">cardinal_number</code>
119 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
120 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
121 <code class="structfield">datetime_precision</code> <code class="type">cardinal_number</code>
124 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
125 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
126 <code class="structfield">interval_type</code> <code class="type">character_data</code>
129 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
130 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
131 <code class="structfield">interval_precision</code> <code class="type">cardinal_number</code>
134 Always null, since this information is not applied to parameter data types in <span class="productname">PostgreSQL</span>
135 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
136 <code class="structfield">udt_catalog</code> <code class="type">sql_identifier</code>
139 Name of the database that the data type of the parameter is
140 defined in (always the current database)
141 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
142 <code class="structfield">udt_schema</code> <code class="type">sql_identifier</code>
145 Name of the schema that the data type of the parameter is
147 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
148 <code class="structfield">udt_name</code> <code class="type">sql_identifier</code>
151 Name of the data type of the parameter
152 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
153 <code class="structfield">scope_catalog</code> <code class="type">sql_identifier</code>
156 Applies to a feature not available in <span class="productname">PostgreSQL</span>
157 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
158 <code class="structfield">scope_schema</code> <code class="type">sql_identifier</code>
161 Applies to a feature not available in <span class="productname">PostgreSQL</span>
162 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
163 <code class="structfield">scope_name</code> <code class="type">sql_identifier</code>
166 Applies to a feature not available in <span class="productname">PostgreSQL</span>
167 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
168 <code class="structfield">maximum_cardinality</code> <code class="type">cardinal_number</code>
171 Always null, because arrays always have unlimited maximum cardinality in <span class="productname">PostgreSQL</span>
172 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
173 <code class="structfield">dtd_identifier</code> <code class="type">sql_identifier</code>
176 An identifier of the data type descriptor of the parameter,
177 unique among the data type descriptors pertaining to the
178 function. This is mainly useful for joining with other
179 instances of such identifiers. (The specific format of the
180 identifier is not defined and not guaranteed to remain the same
182 </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
183 <code class="structfield">parameter_default</code> <code class="type">character_data</code>
186 The default expression of the parameter, or null if none or if the
187 function is not owned by a currently enabled role.
188 </p></td></tr></tbody></table></div></div><br class="table-break" /></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="infoschema-key-column-usage.html" title="35.32. key_column_usage">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="information-schema.html" title="Chapter 35. The Information Schema">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="infoschema-referential-constraints.html" title="35.34. referential_constraints">Next</a></td></tr><tr><td width="40%" align="left" valign="top">35.32. <code class="literal">key_column_usage</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 18.0 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 35.34. <code class="literal">referential_constraints</code></td></tr></table></div></body></html>