stored procedure multiple call call question

my apologies - forgot to say I am on postgresql 8.4.9 on Fedora Linux x86_64

c

If I had a single table targ to insert into I would do an

INSERT INTO targ SELECT thiscol, thatcol, theothercol FROM FOO.

The problem is that I have tables targ1, targ2, targn to insert things

into and a

nice stored procedure myproc which does the insertion into all 3 tables -
problem is that I dont see how I can effectively do

INSERT INTO myproc SELECT thiscol, thatcol, theothercol FROM FOO.

The only way I can work out how to do this is with another stored

procedure

which allows me to do:

FOR rec IN SELECT thiscol, thatcol, theothercol
FROM FOO
LOOP
PERFORM myproc(rec.thiscol, rec.thatcol, rec.theothercol);
END LOOP;

But is there a way to do this just in SQL only without resorting to

plpgsql or a

language like C/Java?

thanks

SELECT myproc(thiscol, thatcol, theothercol) FROM FOO

If you want to use (and explode) the return value of "myproc" you will have
to do:

WITH func_exec AS (
SELECT myproc(thiscol, thatcol, theothercol) FROM FOO
)
SELECT (func_exec.myproc).*
FROM func_exec;

If you do:

SELECT myproc(thiscol, thatcol, theothercol).* FROM FOO

The "myproc" function will be executed one time for every output *column*
defined; which is likely to cause the statement to fail (since you'd be
inserting the same exact data multiple times).

David J.

Thanks very much for that David - really appreciate your response - it works like a dream

c

On 2012-10-02, Chris McDonald <chrisjonmcdonald@gmail.com> wrote:

Hi,

If I had a single table targ to insert into I would do an

INSERT INTO targ SELECT thiscol, thatcol, theothercol FROM FOO.

The problem is that I have tables targ1, targ2, targn to insert things into and a nice stored procedure myproc which does the insertion into all 3 tables - problem is that I dont see how I can effectively do

INSERT INTO myproc SELECT thiscol, thatcol, theothercol FROM FOO.

see the chapter on partitioning for info on how to write a rule or
trigger to do it with syntax like that.

However with what you already have you you can do this:

SELECT myproc(thiscol, thatcol, theothercol) FROM FOO;

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