MySQL is shipped with a set of test cases and programs for running them.
These tools constitute the MySQL test framework that provides a means
for verifying that MySQL Server and its client programs operate
according to expectations. That's handy for anybody developing MySQL or
contributing code
Hi all,
I have got two servers.Let it be server1 and server2 now i have an
application one on server1 which gets the data everymonth and stores in the
database and now the problem is the application in server2 also need the
data to be accessed but data is entered only once in server1
1. One-Way-Replication: server2 gets data from server1, if server2
does not write in the database... if it writes:
1.a 2-Way-Replication: server2 gets data from server1 AND server1
gets data from server2... :) ...
2. FEDERATED Storage Engine: the actual data is stored on server1, the
tables
Aaah. OK. That's what the @ stands for. I could not figure out what the
@ was for, and I posted a message on the list yesterday and did not receive
a response. You're right. That solved the problem.
Thanks,
Jesse
- Original Message -
From: Chris White [EMAIL PROTECTED]
To:
Hello,
I have column of type char(2) containing hex numbers (e.g. 0A, FF,
...) and I cannot find correct function which could convert those hex
numbers to integers so I can perform futher calculations. I experimented
with HEX(), CAST(), CONVERT() but I wasn't succesfull.
Thanks in advance,
I've never seen a query like this, and didn't know it was possible to do a
lot of the things that you're doing. That's great. I believe I understand
most of it. However, I got an error that doesn't seem to make any sense to
me when I tried to execute the query. The error was, Unknown column
Hello NG,
how can I implement a reference in phpmyadmin between two fields from
two different tables, so that the two fields of the two different tables
have the same values? And if I have to fill this two tables by building and
executing
the insert into command, which default value of the
Hello
I use mysql 4.1. I have a big table which has larger than 4 Gbyte. Therefore I
get an error table is full. How can I enable big-table ?
Thanks
Jesse wrote:
The error was,
Unknown column 'primary_grouping.State' in 'on clause'. I assume this
is in the ON clause that's JOINing the member_counts to the
primary_grouping.
No, that's because of a stupid mistake on my part. Here you go:
SELECT
primary_grouping.State
,
On 28.06.2006 13:54, Dušan Pavlica wrote:
Hello,
I have column of type char(2) containing hex numbers (e.g. 0A, FF,
...) and I cannot find correct function which could convert those hex
numbers to integers so I can perform futher calculations. I experimented
with HEX(), CAST(), CONVERT() but
Wolfram Kraus napsal(a):
On 28.06.2006 13:54, Dušan Pavlica wrote:
Hello,
I have column of type char(2) containing hex numbers (e.g. 0A, FF,
...) and I cannot find correct function which could convert those hex
numbers to integers so I can perform futher calculations. I experimented
with
I have been using this set of functions to do sequences, especially for
tables where AUTO_INCREMENT can be inconvenient. Maybe it will help you
over just incrementing the ID by 1 in your code.
I based them on the DBIx::MysqlSequence perl module
On the extremely rare occasion when I couldn't use an auto increment, mainly for performance reasons, I've used an id+subid. Usually
I've only done this for long running scripts that process/add a lot of records. In this case I want to the script to generate it's
own id's. To keep them unique,
Hi,
is there a way to set a maximum of login tries?
Thanks,
Michael Decker
--
Michael Decker [EMAIL PROTECTED]
TESIS SYSware GmbH http://www.tesis.de
Baierbrunnerstr. 15 * 81379 Muenchen * Tel. +49 89 747377-0
--
MySQL General Mailing
It may not be the big-table option you are looking for. MySQL defaults to a 4GB table limit based on calculation. From CREATE TABLE
in the manual, under AVG_ROW_LENGTH.
MySQL uses the product of the MAX_ROWS and AVG_ROW_LENGTH options to decide how big the resulting table is. If you do not
Hey all i am running mysql 4.1.20.
I have a table with about 2.5 million records and i have to do queries
on it that looks something like:
select * from table where field1 like '%some%thing%' order by field2
This is ofcourse very slow since it refuses to use indexes...
i have fairly large
I am using the following in a PHP script:
bash-3.00$ cat mail
?php
$connect = mysql_connect(localhost, bp5am, bp5ampass) or
?
Which gives the following MySQl error:
Warning: mysql_connect() [function.mysql-connect]: Client does not
support authentication protocol requested by server; consider
Hello all,
I am trying to get this script to INSERT a couple of records into my DB, but
I am getting these errors. I know the second warning has nothing to do with
MySQL, so I will work on figuring out that portion later today.
Warning: mysql_fetch_array(): supplied argument is not a valid
Environment: Freebsd 6.0
Mysql : mysql Ver 14.7 Distrib 4.1.18, for porbld-freebsd6.0 (i386)
using 5.0
On the client, I get /var/log/messages, I get the errors:
kernel: 9643D22706C
and
database: mysql_error: The table 'data' is full SQL=INSERT INTO data
(sid,cid,data_payload) VALUES
I
Which version is your php and your mysql?
WSteffen [EMAIL PROTECTED] escreveu na mensagem
news:[EMAIL PROTECTED]
I am using the following in a PHP script:
bash-3.00$ cat mail
?php
$connect = mysql_connect(localhost, bp5am, bp5ampass) or
?
Which gives the following MySQl error:
Warning:
http://dev.mysql.com/doc/refman/5.0/en/old-client.html
Regards!
Edwin.
-Mensaje original-
De: WSteffen [mailto:[EMAIL PROTECTED]
Enviado el: Miércoles, 28 de Junio de 2006 10:29 a.m.
Para: mysql@lists.mysql.com
Asunto: mysql_connect problem
I am using the following in a PHP script:
Raymond, can you post the output of
SHOW TABLE STATUS LIKE 'data';
that should show how big your table is and how big it can be...
Dan
On 6/28/06, Jacob, Raymond A Jr [EMAIL PROTECTED] wrote:
Environment: Freebsd 6.0
Mysql : mysql Ver 14.7 Distrib 4.1.18, for porbld-freebsd6.0 (i386)
using
Martin, currently there is not a way to optimize that particular type of query.
You might consider changing to fulltext indexes and searches instead,
as it could be faster, but it is a slightly different animal from LIKE
so may not fit your needs.
Also, perhaps this is good enough for your situation:
like 'some%thing%'
as opposed to
like '%some%thing%'
in this case, mysql can use an index on that column and filter out
everything that doesn't start with some. It's a start at least.
Peter
On 6/28/06, Dan Buettner [EMAIL PROTECTED] wrote:
All,
Does MySQL have an option where the database can startup in READ-ONLY
mode? The idea is to have the server running with users connected,
but now allowing any updates to me applied to the database. I've
looked through the documentation, but was not able to find such a
feature. If
Why you don´t create a user with just select right and use him?
Clyde Lewis [EMAIL PROTECTED] escreveu na mensagem
news:[EMAIL PROTECTED]
All,
Does MySQL have an option where the database can startup in READ-ONLY
mode? The idea is to have the server running with users connected, but
now
Only allow your users select rights.
--ja
On Wed, 28 Jun 2006, Clyde Lewis wrote:
All,
Does MySQL have an option where the database can startup in READ-ONLY
mode? The idea is to have the server running with users connected,
but now allowing any updates to me applied to the database.
mysql SHOW TABLE STATUS LIKE 'data';
+--++-++-++-
+-+--
+---++-+
-++--
This is a text part of the message.
It is shown for the users of old-style e-mail clients
The idea is to prevent all users from applying
changes to the system. Not just a single
user. I'm trying to find something similar to
Oracle's Read-only mode option during startup.
Thanks,
CL
At 02:38 PM 6/28/2006, João Cândido de Souza Neto wrote:
Why you don´t create a user with just
MySQL by default limits tables to 4GB, it looks like you hit that limit. It's fairly easy to change that limit, ideally when you
create the table. Before MySQL 5.0.6., the default pointer size was 4bytes, which limits you to 4GB. That's the default size, if you
specify a max_rows, that size will
--read_only is probably what you are looking for.
http://dev.mysql.com/doc/refman/5.0/en/server-system-variables.html
--
Eric Braswell
Web Manager MySQL AB
Cupertino, USA
Clyde Lewis wrote:
The idea is to prevent all users from applying changes to the system.
Not just a single user.
Your table has just about max'd out - you're using 4,294,967,280 bytes
out of a maximum of 4,294,967,295 bytes (15 bytes free).
You need to tell mysql to expand this table, with an alter table
command to increase max rows:
http://dev.mysql.com/doc/refman/5.0/en/table-size.html
Dan
On
Hello fellow listers,
I'm currently trying to reduce our TCO by incorporating this fine DBMS and
replacing the MS SQLServer we're using. I'm trying to re-implement the stored
procedures written for SQLServer to MySQL and have one that's tough to figure
out.
This stored procedure
Steve,
INSERT INTO master_context_list (Context_ID, Target_ID)
SELECT Context_ID = @ContextID, targets_list.Target_ID FROM
targets_list
WHERE Target_ID IN ( SELECT Target_ID FROM #APPLICABLE_TARGET_IDS )
[EMAIL PROTECTED] tells the server to return 1 when the column value
of
Jesse wrote:
I have skimmed through several pages of instructions on creating
stored procedures, and I can't seem to find when I should and should
not use the @ symbol before a variable name? I have seen a lot of
procedures where it's always used, and I've written a procedure or two
that
I agree it's not very clear. I think Brent's example is perfect:
ALTER TABLE data max_rows=1
(or whatever number you believe is appropriate for your table)
Dan
On 6/28/06, Jacob, Raymond A Jr [EMAIL PROTECTED] wrote:
The documentation does not seem very clear, at least me on how to
thank you,
raymond
-Original Message-
From: Dan Buettner [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 28, 2006 16:07
To: Jacob, Raymond A Jr; mysql@lists.mysql.com
Subject: Re: Sorry for the dumb question how do I fix table is full?
I agree it's not very clear. I think Brent's
I'm using MySQL 4.1 and the master runs on a Windows 2000 server. This
master replicates to several slaves.
While browsing the data directory on the master, there are a lot of
binary log files that are named:
MasterName-relay-bin.99 (where MasterName is the server-name and
99 is a
Is there a way to use a LIMIT clause to show the last X amount of rows
or a way to emulate this behavior? For example, a table has somewhere
between 1000 and 2000 rows, but you just want to see the last 50. These
last 50 might be the most recent entries, for example. Can this be done
in single
Those do indeed have something to do with replication - they're a
record of all data manipulation commands (inserts, updates, deletes,
table creates and alters, etc). The slaves basically read the
commands from those files in order to replicate what the master has
done.
You can purge them
Depends what you mean by last - you could show the 50 with the
latest datestamps by ending your query with something like:
ORDER BY datestampcolumn DESC
LIMIT 50;
or the 50 with the highest ID numbers, same thing:
ORDER BY id DESC
LIMIT 50;
only real problem there is then they're sorted
Dan,
Thanks for your tips, but I still have an issue. Note the following:
mysql PURGE MASTER LOGS BEFORE DATE_SUB( NOW( ), INTERVAL 31 DAY);
Query OK, 0 rows affected (0.01 sec)
mysql PURGE MASTER LOGS BEFORE DATE_SUB( NOW( ), INTERVAL 10 DAY);
Query OK, 0 rows affected (0.01 sec)
These
I don't think that will work because Context_ID is not found in
'targets_list' hence the error. That's why I thought the Context_ID field was
being assigned with the value of @ContextID. That's the only way we can get
this value.
What I would like is Context_ID to be filled with the
Dan,
That might be close. The rows are inserted with an auto-increment
primary key, but I have no ready way of knowing what the latest 50-IDs
are. There are also various date columns, but I won't readily know the
dates in this scenario.
The goal of the query, which currently returns all of the
On Wednesday 28 June 2006 01:39 pm, Dirk Bremer wrote:
Dan,
That might be close. The rows are inserted with an auto-increment
primary key, but I have no ready way of knowing what the latest 50-IDs
are. There are also various date columns, but I won't readily know the
dates in this scenario.
My bad, Dirk, sorry. I missed that you were asking about relay-bin
files, thought you were asking about bin files.
These relay-bin files are on the master server? This doc:
http://dev.mysql.com/doc/refman/5.0/en/slave-logs.html
makes it sound like they should only exist on the slave servers.
Dirk, you could try this:
(SELECT * FROM customertable
WHERE some criteria
ORDER BY customertableid DESC
LIMIT 50)
ORDER BY customertableid ASC;
Like one sometimes does with UNIONs, but without any UNIONs. Didn't
know whether it would work, but it does (on 5.0.21 anyway).
That will give you
I don't think that will work because Context_ID is not found in
'targets_list' hence the error.
That's why I thought the Context_ID field was being assigned with
the value of @ContextID.
That's the only way we can get this value.
Perhaps not, but no matter.
What I would like is Context_ID to
I should add I ran a FLUSH LOGS on the master and this had no effect on
the relay-bin files.
Dirk Bremer - Senior Systems Engineer - ESS/AMS - NISC Lake St. Louis MO
- USA Central Time Zone
636-755-2652 fax 636-755-2503
[EMAIL PROTECTED]
www.nisc.coop
-Original Message-
From: Dirk
Dan,
Yes they are on the master. The master is not configured as a slave:
mysql show slave status;
Empty set (0.07 sec)
mysql show master status;
+--+--+--+--+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
If you happen to have The Practical SQL Handbook of 1996 it comes
with a DB called bookbiz.sql which was current for MySQL of 1996. A lot
has changed so the file had to be re-written to work on MySQL version
4.1.x. I did this and you can have my file by going to my web page and
d/l it.
What if @ContextID is an input variable to the procedure. What can we do
then?
I'm sorry if this seems very academic, but I'm rather new to the stored
procedure thing and only a little better at SQL statements as a whole:)
Steven J Orton
Software Engineer
Northrop Grumman Mission Systems
I'm sure this is an elementary problem, but I can't get my head round it.
I have two tables: pix and sections, the relevant bits of which are:
pix (2,421 rows):
picid varchar(7) not null
sectionid smallint(5) unsigned not null
caption text null
Hy Guys,
I needed denormalized my table to obtain high performance, but i want best
appropriate the space.
I joint two column (of the JOIN) intro one column with two separadores (# and ;)
Example:
ID | column_1 | column_denormalized
1 | Test | 1#20202;5#1000101;
It has some method to
Dan,
Close, but there appears to be some differences under 4.1 which are
interesting to say the least. Using:
SELECT * FROM customertable
WHERE some criteria
ORDER BY customertableid DESC
LIMIT 50
I get the expected result, i.e. 50 ordered in reverse.
Using:
(SELECT * FROM customertable
WHERE
The situation is somewhat hard to describe, so please bare with me:
I am trying to group my results by the last activity on each row, my query
looks like this
select text, dt, item_id from table
where
group by item_id
order by dt DESC
here is an example record set.
text1,2006-06-28
What if @ContextID is an input variable to the procedure. What can we do then?
I'm sorry if this seems very academic, but I'm rather new to the stored procedure thing and only a little better at SQL statements as a whole:)
Give the param a name which cannot conflict with an existing column
Indeed fulltext searches was the cure i was looking for.
Queries went from over 116 seconds to less than half a second
thx for the tip ;)
Dan Buettner wrote:
Martin, currently there is not a way to optimize that particular type of
query.
You might consider changing to fulltext indexes and
Use the MAX() function, like so:
select text, MAX(dt) as dt, item_id from table
where
group by item_id
order by dt DESC
Dan
On 6/28/06, Tanner Postert [EMAIL PROTECTED] wrote:
The situation is somewhat hard to describe, so please bare with me:
I am trying to group my results by the
Tanner
I am trying to group my results by the last activity on each row,
my query
looks like this
select text, dt, item_id from table
where
group by item_id
order by dt DESC
SELECT t1.item_id, t1.dt, t1.text
FROM table AS t1
LEFT JOIN table AS t2 ON t1.item_id = t2.item_id AND
I was too fast there it seems
fulltext searches doesn't help after all since i can't use leading
wildcards to words :(
too bad i loved the speed :/
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Jan Gomes wrote:
Hy Guys,
I needed denormalized my table to obtain high performance, but i want best
appropriate the space.
I joint two column (of the JOIN) intro one column with two separadores (# and ;)
Example:
ID | column_1 | column_denormalized
1 | Test | 1#20202;5#1000101;
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