That actually depends on the nature of function as well. According to the
PostgreSQL manual:
\df [ pattern ]
\df+ [ pattern ]
Lists available functions, together with their argument and return types. If
pattern is specified, only functions whose names match the pattern are
shown. If the form \df+ is used, additional information about each function,
including language and description, is shown.
Note: To look up functions taking argument or returning values of a specific
type, use your pager's search capability to scroll through the \df output.
To reduce clutter, \df does not show data type I/O functions. This is
implemented by ignoring functions that accept or return type cstring.
I just tried the following at my end with 8.2:
CREATE FUNCTION add(integer, integer) RETURNS integer
AS 'select $1 + $2;'
LANGUAGE SQL
IMMUTABLE
RETURNS NULL ON NULL INPUT;
and then doing a
\df+ add
did show me the correct output...
You can also try the following to get the same type of results:
select proargtypes, prorettype, prosrc from pg_proc where proname =
'delete_old';
---
Shoaib Mir
EnterpriseDB (www.enterprisedb.com)
On 2/1/07, Harvey, Allan AC <[EMAIL PROTECTED]> wrote:
I know the function is there.
What am I doing wrong?
galvdb=#
galvdb=# \df+ delete_old
List of functions
Result data type | Schema | Name | Argument data types | Owner | Language
| Source code | Description
------------------+--------+------+---------------------+-------+----------+-------------+-------------
(0 rows)
galvdb=# select delete_old();
delete_old
------------
482
(1 row)
galvdb=# select version();
version
-------------------------------------------------------------------------------------
PostgreSQL 8.2.0 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.3.3(SuSE
Linux)
(1 row)
galvdb=#
The material contained in this email may be confidential, privileged or
copyrighted. If you are not the intended recipient, use, disclosure or
copying of this information is prohibited. If you have received this
document in error, please advise the sender and delete the document. Neither
OneSteel nor the sender accept responsibility for any viruses contained in
this email or any attachments.
---------------------------(end of broadcast)---------------------------
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to [EMAIL PROTECTED] so that your
message can get through to the mailing list cleanly
