Is the use of array as PL/PGSQL function arguments ?

pgsql-ml@baguette.net writes:

Since it's not possible to do a function with a variable number of arguments, I am wondering if it is possible to use an array as an argument in a PL/PGSQL function ?

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[], events.id%TYPE) RETURNS BOOLEAN AS '

You can certainly use arrays as arguments, but I don't think you can
combine %TYPE with [] like that.

regards, tom lane

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

You can certainly use arrays as arguments, but I don't think
you can combine %TYPE with [] like that.

Thanks Tom for the information ! :-)

When I create functions with %TYPE, PostgreSQL replies that it will
convert the %TYPE with a VARCHAR (for example). So it could replace a
%TYPE[] by a VARCHAR[] (in my example) ?

It seems that this modification could be done easily, I will try to find
in the source code to create this patch. (Without any warranties, I
never done a patch for PostgreSQL).

In the meantime, is it possible to add this feature in the TODO list ?

Regards,

---------------------------------------
Bruno BAGUETTE - pgsql-ml@baguette.net

Added to TODO:

o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]

---------------------------------------------------------------------------

Bruno BAGUETTE wrote:

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

You can certainly use arrays as arguments, but I don't think
you can combine %TYPE with [] like that.

Thanks Tom for the information ! :-)

When I create functions with %TYPE, PostgreSQL replies that it will
convert the %TYPE with a VARCHAR (for example). So it could replace a
%TYPE[] by a VARCHAR[] (in my example) ?

It seems that this modification could be done easily, I will try to find
in the source code to create this patch. (Without any warranties, I
never done a patch for PostgreSQL).

In the meantime, is it possible to add this feature in the TODO list ?

Regards,

---------------------------------------
Bruno BAGUETTE - pgsql-ml@baguette.net

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  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

Tom Lanes a écrit :

pgsql-ml@baguette.net writes:

Since it's not possible to do a function with a variable number of
arguments, I am wondering if it is possible to use an array as an
argument in a PL/PGSQL function ?

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

You can certainly use arrays as arguments, but I don't think
you can combine %TYPE with [] like that.

I've checked in the PostgreSQL 7.3.4 sources
(backend/parser/parse_type.c) and especially the char *
TypeNameToString(const TypeName *typename) function.

At the end of this function it seems that manages %TYPE that is combined
with [] :

if (typename->arrayBounds != NIL)
appendStringInfo(&string, "[]");

so I'm asking why I can't write a PL/PGSQL function like

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

Am I looking at the wrong place in the sources ?

Regards,

---------------------------------------
Bruno BAGUETTE - pgsql-ml@baguette.net

We just added this to TODO:

o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]

but that will help TYPE inside a function, not as part of the function
parameter list.

Do I need a TODO for this, or is it listed under some other item?

---------------------------------------------------------------------------

Bruno BAGUETTE wrote:

Tom Lanes a ?crit :

pgsql-ml@baguette.net writes:

Since it's not possible to do a function with a variable number of
arguments, I am wondering if it is possible to use an array as an
argument in a PL/PGSQL function ?

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

You can certainly use arrays as arguments, but I don't think
you can combine %TYPE with [] like that.

I've checked in the PostgreSQL 7.3.4 sources
(backend/parser/parse_type.c) and especially the char *
TypeNameToString(const TypeName *typename) function.

At the end of this function it seems that manages %TYPE that is combined
with [] :

if (typename->arrayBounds != NIL)
appendStringInfo(&string, "[]");

so I'm asking why I can't write a PL/PGSQL function like

CREATE OR REPLACE FUNCTION myownfunction(members.id%TYPE[],
events.id%TYPE) RETURNS BOOLEAN AS '

Am I looking at the wrong place in the sources ?

Regards,

---------------------------------------
Bruno BAGUETTE - pgsql-ml@baguette.net

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-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

We just added this to TODO:

o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]

but that will help TYPE inside a function, not as part of the
function parameter list.

Do I need a TODO for this, or is it listed under some other item?

Hello,

I don't see anything in the TODO about the handle of %TYPE arrays in the
function parameter list. I think that this should be added in the TODO
also.

Regards :-)

---------------------------------------
Bruno BAGUETTE - pgsql-ml@baguette.net