Thread: libpq API for PQcmdTuples()

libpq API for PQcmdTuples()

From
Mihai RUSU
Date:
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Hi

I was working recently on a mid-layer in my current projects for
abstraction of SQL backends (curently for mysql and pgsql only) and found
out that the libpq synonime of mysql_affected_rows is PQcmdTuples. However
I really dont see why does it return char * ?? Is there any practical
reason for this ?

Curently I do (unsigned int)atoi(PQcmdTuples()) but I really dont feel
very confortable with strings which might change their format at any time,
not to mention the overhead to convert from str to int each time (and I
dont expect to use this atoi rare heh).

Thanks!

- --
Mihai RUSU                                    Email: dizzy@roedu.net
GPG : http://dizzy.roedu.net/dizzy-gpg.txt    WWW: http://dizzy.roedu.net
                       "Linux is obsolete" -- AST
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Re: libpq API for PQcmdTuples()

From
Bruce Momjian
Date:
Mihai RUSU wrote:
[ PGP not available, raw data follows ]
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> Hi
>
> I was working recently on a mid-layer in my current projects for
> abstraction of SQL backends (curently for mysql and pgsql only) and found
> out that the libpq synonime of mysql_affected_rows is PQcmdTuples. However
> I really dont see why does it return char * ?? Is there any practical
> reason for this ?
>
> Curently I do (unsigned int)atoi(PQcmdTuples()) but I really dont feel
> very confortable with strings which might change their format at any time,
> not to mention the overhead to convert from str to int each time (and I
> dont expect to use this atoi rare heh).

I think the reason it is a string is mostly historical.  You should be
find just converting it to an int.

--
  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

Re: libpq API for PQcmdTuples()

From
Mihai RUSU
Date:
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Hash: SHA1

On Wed, 3 Mar 2004, Bruce Momjian wrote:

> I think the reason it is a string is mostly historical.  You should be
> find just converting it to an int.

Ok thanks! However, its pretty dumb because probably libpq internally does
the int -> str conversion and then I do the reverse... A new libpq
function returning the numerical value would be nice :)

- --
Mihai RUSU                                    Email: dizzy@roedu.net
GPG : http://dizzy.roedu.net/dizzy-gpg.txt    WWW: http://dizzy.roedu.net
                       "Linux is obsolete" -- AST
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