Hello all,
I have one server, where electric power goes down time to time.
I have many databases in mysql, and some tables are corrupted.
Do you think it is good idea to write script and put it to cron, and
it should check if some table has error (MYSQL show status command?),
and if yes, it will
Hi all,
I have question about storing hierarchical values in db. I found some
methods, pick up the first easiest, but I ahve question about that -
have someone coded some methods, or knows some module, which helps me
with this issue ?
Ok, here is infos:
MYSQL tables:
CREATE TABLE `cat_name` (
Hello all,
exist a better error description for DBI errors? I have quite complex
datastructure, I'm saving it to DB, using ODBC and MS SQL 2000. I get
only:
DBD::ODBC::st execute failed: [Microsoft][ODBC SQL Server Driver]Invalid charact
er value for cast specification (SQL-22018)(DBD:
Hello,
I'd like to do something like this:
$sth-prepare(...)
$sth-execute(...)
while (my $hr = $sth-fetchrow_hashref) {
my $oses = get_os( $hr-{id} );
...
}
Function get_os() prepare, execute and return $sth-fetchall_arrayref();
but I'm getting error:
DBD::ODBC::st execute failed:
Michael A Chase [MAC], on Thursday, May 12, 2005 at 05:48 (-0700) made
these points:
MAC I'd do something like this:
MACmy $sth = $dbh - column_info( undef, $sSchema, $sTable, $sColumn );
MACmy @sColumnInfo = ();
MACeval { # The eval isn't needed if RaiseError == 0.
MAC
Hi all,
I'm making script, and I'd like add column, if column not exist. My DBS is
MySQL, and I didn't find direct SQL command for this. Is there some
workaround for this ?
thanks.
Michael A Chase [MAC], on Thursday, May 12, 2005 at 05:48 (-0700) has
on mind:
MAC I'd do something like this:
MACmy $sth = $dbh - column_info( undef, $sSchema, $sTable, $sColumn );
MACmy @sColumnInfo = ();
MACeval { # The eval isn't needed if RaiseError == 0.
MAC @sColumnInfo =
Michael Peppler [MP], on Friday, April 29, 2005 at 17:55 (+0200)
contributed this to our collective wisdom:
MP No - just do a select @@identity to get the latest value.
ok, that's the way too, I totally forget about @@identity.
thanks.
--
How do you protect mail on web? I use
Hello all,
I connect to MSSQL via ODBC, exist some method to get last inserted
id? I read in DBI docs:
For some drivers the value may only be available if placeholders have
not been used (e.g., Sybase, MS SQL). In this case the value returned
would be from the last non-placeholder insert
Ron Savage [RS], on Sunday, April 10, 2005 at 10:23 (+1000) made these
points:
RS IMHO data goes in databases and files go in directories.
RS Raving about speed is simply premature optimization, and hence is a design
fault.
ok, thanks, will store that into files, I will know in future. Is
there
Peter J. Holzer [PJH], on Monday, April 11, 2005 at 09:56 (+0200)
wrote:
PJH Consistency: Do you need to ensure consistency between this data and
PJH other data? If you store data in files, then somebody can remove or
PJH alter the files without updating the meta-data in the database.
yes, I
Ron Savage [RS], on Monday, April 11, 2005 at 21:06 (+1000)
thoughtfully wrote the following:
RS Also, I'm glad you did not take my comments as criticism of yourself. I did
not
RS use the word 'you' which would have implied you personally were raving.
that's ok. I'd like to know both sides of
Hi all,
This is not direct perl question, but it is database related.
I am on freebsd, using mysql, and thinking about storing pictures in
database. But someone tolds me, that is faster to have only id in db,
and picture stored in harddisk in good dir structure, for example:
/1/10/100/1000342.jpg
Ing. Branislav Gerzo [IBG], on Monday, March 21, 2005 at 15:18 (+0100)
made these points:
IBG I'm using AS perl 5.8.6 on win2003, I can't continue work, because I
IBG don't understand what's going here:
IBG I have in MSSQL table, where I have only 1 column, and 1 row, which
IBG contains accent c
Laurie Vien [LV], on Monday, February 28, 2005 at 10:11 (-0500) wrote:
LV How do I unsubscribe from this list?
you have that in _every_ mail, just look at headers.
List-Unsubscribe: mailto:[EMAIL PROTECTED]
--
...m8s, cu l8r, Brano.
[When the going gets weird, the weird turn pro. --
Hi all,
I have table which consist of cca 20.000.000 rows, using MySQL.
How to do something with each row ? I mean: I can't select them
all into memory, I can't use LIMIT, because it is slow at higher
values, so what is good to use ?
I think about:
select id, name from table where id 100
and
Reidy, Ron [RR], on Tuesday, February 22, 2005 at 06:58 (-0700) wrote:
my $sth = $dbh-prepare_cached(select id, name from table);
my $sth = $dbh-$sth-execute();
RR [rr] This should read $sth-execute. Execute retruns a
RR value, not a statement handle ($sth).
yes, sorry for that. In my code I
Scott T. Hildreth [STH], on Tuesday, February 22, 2005 at 08:36
(-0600) thinks about:
STH Mysql will return all rows by default, you need to turn that off.
STH I can't remember what the attribute is, read the DBD::mysql perldoc.
I do everything, but I cannot find that. I looked in
Scott T. Hildreth [STH], on Tuesday, February 22, 2005 at 08:50
(-0600) wrote the following:
STH my $sth = $dbh-prepare(QUERY);
STH $sth-{mysql_use_result} = 1;
thanks a lot, you save me a day! :)
--
...m8s, cu l8r, Brano.
[Foiling felons and thwarting thieves. - DarkWing
Scott T. Hildreth [STH], on Tuesday, February 22, 2005 at 08:50
(-0600) typed the following:
STH my $sth = $dbh-prepare(QUERY);
STH $sth-{mysql_use_result} = 1;
this is indeed nice, but solve problem only half. When I process
value I want insert/update it to db. But I get, when
Hi all,
I have one simple question - how I can return 10 random rows
from select?
For example we have select:
Select name, street, date
from people
order by date desc
limit 0,100
Now, I want return 10 random peoples. How to do it ? It is possible
via SQL statement, or I have to care about
Hello,
I have in mysql table kl: ID, value, flow
now, when I run in mysql:
UPDATE kl SET value = 10, flow = value - 10 where ID = 5;
it works. But when I write that in script:
my $sth = $dbh-prepare_cached(UPDATE kl SET value = ?, flow = value - ? WHERE
ID = ?);
$sth-execute( 10, 10, 5 );
I
Hello friends,
one common problem is:
Insert foo to db if foo doesn't exists, get ID at last.
I am pretty sure it could be done better way, snippet here:
#insert link
my $sth = $dbh-prepare_cached(q[
INSERT INTO link
SETlink = ?
ON DUPLICATE KEY UPDATE link = link ]);
$sth-execute(
Hi all!
I have subroutine, that checks, if I already have in DB specified row:
sub image_exist {
my ($id, $date) = @_; #id is _always_ number
my $sth = $mydbh-prepare_cached(select ID from pic where id = ?);
$sth-execute($id);
my $rows = $sth-fetchall_arrayref();
if (
Hi pals,
this is my first post to this mailing list. I have one problem, it is
maybe for you small, but for me a big problem. If I want improve my
scripts I _have_ to use parallel DB access. When I looked around I
come to Parallel::ForkManager module, easy to use.
When I wrote script, I saw it
Moosmann, James [MJ], on Wednesday, December 29, 2004 at 07:07 (-0500)
thoughtfully wrote the following:
MJ I am really disappointed with Perl's lack of support for any reliable.
MJ multithreaded behavior. I keep hoping it gets fixed. But I have waited for
MJ 2 years.
ahm, I wrote some posts
Ron Wingfield [RW], on Wednesday, December 29, 2004 at 10:29 (-0600)
wrote the following:
RW I know my comments do not provide an immediate solution, but
RW this could be a very interesting thread. Infact, I'm going to be
RW writing some IPC intensive code in the near future, and I want to
RW
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