Thread: Problem specifying limit in select inside insert.

Hello,

I have quite strange behavior of the following SQL:

insert into address (cid,email) select distinct '49'::int,member.email from
member imit 1 ;

It should insert just 1 record.
But it insert all recodrs which will be selected by subselect...
What's wrong with this SQL? Or this is a bug? If it is a bug...
How to fix it (patch, workaround...)

Thanks in advance.

--
Sincerely Yours,
Denis Perchine

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Denis Perchine <dyp@perchine.com> writes:
> insert into address (cid,email) select distinct '49'::int,member.email from
> member imit 1 ;

INSERT ... SELECT ... LIMIT doesn't work.  In existing releases the
LIMIT clause is just dropped on the floor by the parser :-(.  In current
CVS sources you get
    ERROR:  LIMIT is not supported in subselects
which at least lets you know you have a problem.  I have a to-do item
to see if this can be made to work right, but it's not very high
priority.  I think the correct fix is to pull LIMIT handling out of
ExecutorRun and make it be handled by a new plan node type, but that'll
probably take more time than I can spare before 7.1 ...

            regards, tom lane