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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="sect1" lang="en">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="infoschema-routines"></a>31.26.<code class="literal">routines</code></h2></div></div></div>
<p> The view <code class="literal">routines</code> contains all functions in the
current database. Only those functions are shown that the current
user has access to (by way of being the owner or having some
privilege).
</p>
<div class="table">
<a name="id699131"></a><p class="title"><b>Table31.24.<code class="literal">routines</code> Columns</b></p>
<div class="table-contents"><table summary="routines Columns" border="1">
<colgroup>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>Name</th>
<th>Data Type</th>
<th>Description</th>
</tr></thead>
<tbody>
<tr>
<td><code class="literal">specific_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Name of the database containing the function (always the current database)</td>
</tr>
<tr>
<td><code class="literal">specific_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Name of the schema containing the function</td>
</tr>
<tr>
<td><code class="literal">specific_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td> The “<span class="quote">specific name</span>” of the function. This is a
name that uniquely identifies the function in the schema, even
if the real name of the function is overloaded. The format of
the specific name is not defined, it should only be used to
compare it to other instances of specific routine names.
</td>
</tr>
<tr>
<td><code class="literal">routine_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Name of the database containing the function (always the current database)</td>
</tr>
<tr>
<td><code class="literal">routine_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Name of the schema containing the function</td>
</tr>
<tr>
<td><code class="literal">routine_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Name of the function (may be duplicated in case of overloading)</td>
</tr>
<tr>
<td><code class="literal">routine_type</code></td>
<td><code class="type">character_data</code></td>
<td> Always <code class="literal">FUNCTION</code> (In the future there might
be other types of routines.)
</td>
</tr>
<tr>
<td><code class="literal">module_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">module_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">module_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">udt_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">udt_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">udt_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">data_type</code></td>
<td><code class="type">character_data</code></td>
<td> Return data type of the function, 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">type_udt_name</code> and associated
columns).
</td>
</tr>
<tr>
<td><code class="literal">character_maximum_length</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">character_octet_length</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">character_set_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">character_set_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">character_set_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">collation_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">collation_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">collation_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">numeric_precision</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">numeric_precision_radix</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">numeric_scale</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">datetime_precision</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">interval_type</code></td>
<td><code class="type">character_data</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">interval_precision</code></td>
<td><code class="type">character_data</code></td>
<td>Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">type_udt_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td> Name of the database that the return data type of the function
is defined in (always the current database)
</td>
</tr>
<tr>
<td><code class="literal">type_udt_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td> Name of the schema that the return data type of the function is
defined in
</td>
</tr>
<tr>
<td><code class="literal">type_udt_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td> Name of the return data type of the function
</td>
</tr>
<tr>
<td><code class="literal">scope_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">scope_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">scope_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">maximum_cardinality</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Always null, because arrays always have unlimited maximum cardinality in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">dtd_identifier</code></td>
<td><code class="type">sql_identifier</code></td>
<td> An identifier of the data type descriptor of the return data
type of this function, unique among the data type descriptors
pertaining to the function. 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.)
</td>
</tr>
<tr>
<td><code class="literal">routine_body</code></td>
<td><code class="type">character_data</code></td>
<td> If the function is an SQL function, then
<code class="literal">SQL</code>, else <code class="literal">EXTERNAL</code>.
</td>
</tr>
<tr>
<td><code class="literal">routine_definition</code></td>
<td><code class="type">character_data</code></td>
<td> The source text of the function (null if the current user is
not the owner of the function). (According to the SQL
standard, this column is only applicable if
<code class="literal">routine_body</code> is <code class="literal">SQL</code>, but
in <span class="productname">PostgreSQL</span> it will contain
whatever source text was specified when the function was
created.)
</td>
</tr>
<tr>
<td><code class="literal">external_name</code></td>
<td><code class="type">character_data</code></td>
<td> If this function is a C function, then the external name (link
symbol) of the function; else null. (This works out to be the
same value that is shown in
<code class="literal">routine_definition</code>.)
</td>
</tr>
<tr>
<td><code class="literal">external_language</code></td>
<td><code class="type">character_data</code></td>
<td>The language the function is written in</td>
</tr>
<tr>
<td><code class="literal">parameter_style</code></td>
<td><code class="type">character_data</code></td>
<td> Always <code class="literal">GENERAL</code> (The SQL standard defines
other parameter styles, which are not available in <span class="productname">PostgreSQL</span>.)
</td>
</tr>
<tr>
<td><code class="literal">is_deterministic</code></td>
<td><code class="type">character_data</code></td>
<td> If the function is declared immutable (called deterministic in
the SQL standard), then <code class="literal">YES</code>, else
<code class="literal">NO</code>. (You cannot query the other volatility
levels available in <span class="productname">PostgreSQL</span> through the information schema.)
</td>
</tr>
<tr>
<td><code class="literal">sql_data_access</code></td>
<td><code class="type">character_data</code></td>
<td> Always <code class="literal">MODIFIES</code>, meaning that the function
possibly modifies SQL data. This information is not useful for
<span class="productname">PostgreSQL</span>.
</td>
</tr>
<tr>
<td><code class="literal">is_null_call</code></td>
<td><code class="type">character_data</code></td>
<td> If the function automatically returns null if any of its
arguments are null, then <code class="literal">YES</code>, else
<code class="literal">NO</code>.
</td>
</tr>
<tr>
<td><code class="literal">sql_path</code></td>
<td><code class="type">character_data</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">schema_level_routine</code></td>
<td><code class="type">character_data</code></td>
<td> Always <code class="literal">YES</code> (The opposite would be a method
of a user-defined type, which is a feature not available in
<span class="productname">PostgreSQL</span>.)
</td>
</tr>
<tr>
<td><code class="literal">max_dynamic_result_sets</code></td>
<td><code class="type">cardinal_number</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">is_user_defined_cast</code></td>
<td><code class="type">character_data</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">is_implicitly_invocable</code></td>
<td><code class="type">character_data</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">security_type</code></td>
<td><code class="type">character_data</code></td>
<td> If the function runs with the privileges of the current user,
then <code class="literal">INVOKER</code>, if the function runs with the
privileges of the user who defined it, then
<code class="literal">DEFINER</code>.
</td>
</tr>
<tr>
<td><code class="literal">to_sql_specific_catalog</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">to_sql_specific_schema</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">to_sql_specific_name</code></td>
<td><code class="type">sql_identifier</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
<tr>
<td><code class="literal">as_locator</code></td>
<td><code class="type">character_data</code></td>
<td>Applies to a feature not available in <span class="productname">PostgreSQL</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break">
</div></body>
</html>
|
