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postgresql8.3-docs-8.3.6-2mdv2008.1.x86_64.rpm

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><H1
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><A
NAME="INFOSCHEMA-PARAMETERS"
>33.22. <TT
CLASS="LITERAL"
>parameters</TT
></A
></H1
><P
>   The view <TT
CLASS="LITERAL"
>parameters</TT
> contains information about
   the parameters (arguments) of 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="AEN37553"
></A
><P
><B
>Table 33-20. <TT
CLASS="LITERAL"
>parameters</TT
> Columns</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Data Type</TH
><TH
>Description</TH
></TR
></THEAD
><TBODY
><TR
><TD
><TT
CLASS="LITERAL"
>specific_catalog</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Name of the database containing the function (always the current database)</TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>specific_schema</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Name of the schema containing the function</TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>specific_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>       The <SPAN
CLASS="QUOTE"
>"specific name"</SPAN
> of the function.  See <A
HREF="infoschema-routines.html"
>Section 33.29</A
> for more information.
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>ordinal_position</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>       Ordinal position of the parameter in the argument list of the
       function (count starts at 1)
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>parameter_mode</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>       <TT
CLASS="LITERAL"
>IN</TT
> for input parameter,
       <TT
CLASS="LITERAL"
>OUT</TT
> for output parameter,
       and <TT
CLASS="LITERAL"
>INOUT</TT
> for input/output parameter.
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>is_result</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>as_locator</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>parameter_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Name of the parameter, or null if the parameter has no name</TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>data_type</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>       Data type of the parameter, if it is a built-in type, or
       <TT
CLASS="LITERAL"
>ARRAY</TT
> if it is some array (in that case, see
       the view <TT
CLASS="LITERAL"
>element_types</TT
>), else
       <TT
CLASS="LITERAL"
>USER-DEFINED</TT
> (in that case, the type is
       identified in <TT
CLASS="LITERAL"
>udt_name</TT
> and associated
       columns).
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>character_maximum_length</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>character_octet_length</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>character_set_catalog</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>character_set_schema</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>character_set_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>collation_catalog</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>collation_schema</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>collation_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>numeric_precision</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>numeric_precision_radix</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>numeric_scale</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>datetime_precision</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>interval_type</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>interval_precision</TT
></TD
><TD
><TT
CLASS="TYPE"
>character_data</TT
></TD
><TD
>Always null, since this information is not applied to parameter data types in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>udt_catalog</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>       Name of the database that the data type of the parameter is
       defined in (always the current database)
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>udt_schema</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>       Name of the schema that the data type of the parameter is
       defined in
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>udt_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>       Name of the data type of the parameter
      </TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>scope_catalog</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>scope_schema</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>scope_name</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>Applies to a feature not available in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>maximum_cardinality</TT
></TD
><TD
><TT
CLASS="TYPE"
>cardinal_number</TT
></TD
><TD
>Always null, because arrays always have unlimited maximum cardinality in <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></TD
></TR
><TR
><TD
><TT
CLASS="LITERAL"
>dtd_identifier</TT
></TD
><TD
><TT
CLASS="TYPE"
>sql_identifier</TT
></TD
><TD
>       An identifier of the data type descriptor of the parameter,
       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
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