Обсуждение: Bug in contrib/intagg int_array_enum() ?

I'm seeing some strange behaviour using the int_array_enum function in
contrib/intagg.

It seems when i set the array to an empty array by hand doing update set
level_2_ids = '{}' then int_array_enum generates some odd data:

slo=> select * from (select int_array_enum(level_2_ids) as l2,level_2_ids from cache where key_id = 900) as x where
level_2_ids= '{}'; 
     l2     | level_2_ids
------------+-------------
          0 | {}
         23 | {}
          1 | {}
          0 | {}
       5541 | {}
         28 | {}
          1 | {}
          0 | {}
         23 | {}
          1 | {}
          0 | {}
         42 | {}
     100932 | {}
          0 | {}
          0 | {}
 2113601536 | {}
     589827 | {}
    1583362 | {}
        800 | {}
       4120 | {}
 1104836463 | {}
 1075191249 | {}
         32 | {}
          1 | {}
          0 | {}
         23 | {}
          2 | {}
          0 | {}
(28 rows)


--
greg

Greg Stark <gsstark@mit.edu> writes:
> I'm seeing some strange behaviour using the int_array_enum function in
> contrib/intagg.

AFAICT, intagg is completely unready to deal with arrays of other than
one dimension; nor has it got any error checks to notice when the input
is not 1-D.  '{}' is treated as zero-dimensional ...

            regards, tom lane

Hi everyone,

I run into problem where pg_pconnect (in php script) failed to get
connection to the postgres server even when the server is actually
running because the server is too busy (serving too many requests).

So I want to check from php script if postgres server is running. The
only way I could think of to is telnet the server on port 5432 (where
postgres is listening).

Does someone know a better way to check if postgres server is running?

thanks
- reynard

Tom Lane <tgl@sss.pgh.pa.us> writes:

> Greg Stark <gsstark@mit.edu> writes:
> > I'm seeing some strange behaviour using the int_array_enum function in
> > contrib/intagg.
>
> AFAICT, intagg is completely unready to deal with arrays of other than
> one dimension; nor has it got any error checks to notice when the input
> is not 1-D.  '{}' is treated as zero-dimensional ...

Ah, so then how do I construct a one-dimensional zero-sized array?

--
greg

netstat -anp | grep postmaster

This will tell you if postmater is listening on the port.

If you do not have root access then

netstat -an | grep 5432

HTH

Darren

On Thu, 27 Mar 2003, Reynard Hilman wrote:

>
> Hi everyone,
>
> I run into problem where pg_pconnect (in php script) failed to get
> connection to the postgres server even when the server is actually
> running because the server is too busy (serving too many requests).
>
> So I want to check from php script if postgres server is running. The
> only way I could think of to is telnet the server on port 5432 (where
> postgres is listening).
>
> Does someone know a better way to check if postgres server is running?
>
> thanks
> - reynard
>
>
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--
Darren Ferguson