Re: Counting distinct elements

2002-06-07 Thread David M. Peak

Depends.  If this is a correlation table and the combined columns are a
primary key,

SELECT ObjId,
   COUNT(ElemId)
FROMElems
GROUP BY ElemId;

if the combination is not unique, then:

SELECT ObjId,
   COUNT(DISTINCT ElemId)
FROMElems
GROUP BY ElemId;

- Original Message -
From: Csaba Gabor [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 07, 2002 10:20 AM
Subject: Counting distinct elements


 Seems like this should be an easy question, but I just don't get it:

 If I have CREATE TABLE Elems (ObjId INT, ElemId INT);
 Is there a nice query to find the Number of Distinct ElemId's for each
ObjId?

 Motivation: Later I will want to add a WHERE ObjId IN (...) and join the
Obj describing table to
 the results of this query.

 Thanks,
 Csaba Gabor from New York

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Re: Is it possible to have MySQL perform an action at a specifictime?

2002-06-04 Thread David M. Peak

Have you looked at cron on LINUX?


- Original Message -
From: Jamie Buck [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, June 04, 2002 11:37 AM
Subject: Is it possible to have MySQL perform an action at a specifictime?


 I have a file containing commands to add and drop tables as a means of
 synchronizing two databases. What i want to happen is for MySQL to open
 this file and read it at a specific time without the user having to
 explicitly connect to MySQL and type in the commands in order to get it
 to read the file, such as  mysql dbname  text_file_name. Is there a
 way to schedule a process either using a function of MySQL or of the
 operating system to get it to do this? The operating system would be
 Linux to my knowledge. I am hosting the db on an ISP and am not sure
 what they will let me do in regards to interacting with MySQL but it is
 possible to get a telnet connection if need be to perhaps setup a
 script. if it has to be a shell script, i doubt they will let me do
 this, but you never know. Also, as another option,  is it possible to
 create a web interface for this instead where a button hit by the user
 would initiate the reading of the file somehow? This might be easier but
 I was not sure how to exactly send command line directions from a
 webpage.

 Thank you,
 Jamie Buck

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Re: stupid error, please kick me (and send me a solution)

2002-06-03 Thread David M. Peak

If the snippet is copied directly out of your code, are you missing a single
quote before:

$link_glob


$result = mysql_db_query('$db_glob', '$query', $link_glob');


- Original Message -
From: Jule Slootbeek [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, June 03, 2002 5:09 PM
Subject: Re: stupid error, please kick me (and send me a solution)


 [EMAIL PROTECTED] wrote:
  Hi Jule !!!
 
  This can be a socket error.
  Sometimes when installing PHP/Mysql as binary dist PHP
  does not know where mysql socket is.
 
  The default is (AFAIK) /tmp/mysql.sock
 
  Make a test:
  Try to connect with mysql console with exactly
  the same info as You use in Your PHP script.
  shell# mysql -hlocalhost -u theUser -p db_name
 
  If you connect succesfully then run command:
  mysql status
 
  Mysql shows some info about the connection and You should
  see where the mysql socket is located.
 
  PHP test:
  create a file phptest.php
  ?php
  phpinfo();
  ?
 
  this file shows detailed information about mysql.
  Find mysql info and mysql.sock
 
  If PHP is NOT using the same file tehn You propably
  find the error !! You can then open php.ini, edit
  path to mysql.sock to match with the one shown by
  mysql console, then restart apache and try again...
 
  Good Luck
 
  =d0Mi=
 
 
 Hey guys,
 i'm getting this error with the following sql script using php:
 --error--
 Warning: Supplied argument is not a valid MySQL-Link resource in
 /var/www/phpquiz/register_user.php on line 12
 --error--
 
 --script--
 $link_glob = mysql_connect('$host_glob', '$un_glob', '$pw_glob');
 $query = INSERT INTO user values('0', '$fname', '$lname', '$email',
 '$username', PASSWORD('$password');
 $result = mysql_db_query('$db_glob', '$query', $link_glob');
 if (!$result) {
 echo font size=+1Your Information could not be entered into the
 
 
 
 
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 The strange thing i also noticed about this error, is that mysel_error()
 doesn't give any output..

 Jule



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 [EMAIL PROTECTED]

 http://blindtheory.cjb.net



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MyODBC Question

2002-04-30 Thread David M. Peak

I have a question about MyODBC and the results of SQLGetTypeInfo from a
table with a column of type TEXT.  The results show that the column is of
type VARCHAR with a length of 255.  Is there a way to show the true
datatype?  The MySQL that I'm running is 3.23.36.

SQL question..



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Re: MyODBC Question

2002-04-30 Thread David M. Peak

So what is the best way to store information in a MySQL database through
MyODBC that is of a character type that is greater that 255 chars?  BLOB?


- Original Message -
From: Venu [EMAIL PROTECTED]
To: 'David M. Peak' [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Tuesday, April 30, 2002 2:17 PM
Subject: RE: MyODBC Question


 Hi,

  -Original Message-
  From: David M. Peak [mailto:[EMAIL PROTECTED]]
  Sent: Tuesday, April 30, 2002 12:35 PM
  To: [EMAIL PROTECTED]
  Subject: MyODBC Question
 
 
  I have a question about MyODBC and the results of
  SQLGetTypeInfo from a table with a column of type TEXT.  The
  results show that the column is of type VARCHAR with a length
  of 255.  Is there a way to show the true datatype?  The MySQL
  that I'm running is 3.23.36.
 
  That is supposed to be for the fix for invalid mapping of SET
  and enum types from other vendors while migrating (MSSQL,
  ACCESS, DTS and all conversion tools), else the behaviour is
  not expected.

  One magic here is that, if you set this to CHAR(..) then the
  Access 97 works, and if it is VARCHAR(..) then All other ACCESS
  (98, 2000, XP) works, but 97 fails. We are trying to fix this
  issue in next versions to have a common procedure by allowing TEXT
  type to accept field size.

 Regards, Venu
 --
 For technical support contracts, go to https://order.mysql.com
__  ___ ___   __
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Re: MyODBC Question

2002-04-30 Thread David M. Peak

I don't mean to beat a dead horse here, but when the backend checks the
length of the datatype for the columns to prepare the statment, the TEXT
column comes back as length of 255 so my 1,500 char string gets cut off.  Is
there a datatype that the MyODBC driver will return as character data
greater than 255?


- Original Message -
From: Venu [EMAIL PROTECTED]
To: 'David M. Peak' [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Tuesday, April 30, 2002 2:45 PM
Subject: RE: MyODBC Question


 Hi,

  -Original Message-
  From: David M. Peak [mailto:[EMAIL PROTECTED]]
  Sent: Tuesday, April 30, 2002 2:44 PM
  To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
  Subject: Re: MyODBC Question
 
 
  So what is the best way to store information in a MySQL
  database through MyODBC that is of a character type that is
  greater that 255 chars?  BLOB?

  You can always make use of TEXT, MEDIUM TEXT,
  LONG VARCHAR, .. and similarly for BLOBs.

 Regards, Venu
 --
 For technical support contracts, go to https://order.mysql.com
__  ___ ___   __
   /  |/  /_ __/ __/ __ \/ /   Mr. Venu [EMAIL PROTECTED]
  / /|_/ / // /\ \/ /_/ / /__  MySQL AB, Developer
 /_/  /_/\_, /___/\___\_\___/  California, USA
___/  www.mysql.com
  
  
 




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Re: Queries help (part II)

2002-03-28 Thread David M. Peak

If you only want it ascending, take out the DESC as in:

$query = SELECT * FROM gigs  WHERE date  '$today' ORDER BY date ASC LIMIT
3;

- Original Message -
From: David Rice [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, March 28, 2002 12:19 PM
Subject: Queries help (part II)


 Hey thanks i got it to work sort of

 $query = SELECT * FROM gigs  WHERE date  '$today' ORDER BY date DESC
LIMIT
 3;

 that works
 but i want it to show them ascending  and when i change it to

 $query = SELECT * FROM gigs  WHERE date  '$today' ORDER BY date ASC;
DESC
 LIMIT 3;

 it doesn't work

 any thoughts?

 _
 Send and receive Hotmail on your mobile device: http://mobile.msn.com


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Re: Can you Change Nulls in the MySQLDump from \N?

2002-03-22 Thread David M. Peak

Well I was able to fix the problem by doing a Select into Outfile and
specifying in my select list and using IF...

thanks




- Original Message -
From: Paul DuBois [EMAIL PROTECTED]
To: David M. Peak [EMAIL PROTECTED]; MySQL List
[EMAIL PROTECTED]
Sent: Thursday, March 21, 2002 4:24 PM
Subject: Re: Can you Change Nulls in the MySQLDump from \N?


 At 12:11 -0800 3/21/02, David M. Peak wrote:
 Is there a way to tell MySQL to put a blank space instead of \N in the
 tab-delimited files when it does a dump?

 Nope.  You'll have to postprocess the files somehow.

I'm working on a MySQL to SQL
 Server migration and having problems with the output files.  I'm doing
this
 all in batch fellas so I'm not finding a good search and replace utility.
 (perl, c++, and other langs are not an option..)
 
 Thanks
 
 David


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Can you Change Nulls in the MySQLDump from \N?

2002-03-21 Thread David M. Peak

Is there a way to tell MySQL to put a blank space instead of \N in the
tab-delimited files when it does a dump?  I'm working on a MySQL to SQL
Server migration and having problems with the output files.  I'm doing this
all in batch fellas so I'm not finding a good search and replace utility.
(perl, c++, and other langs are not an option..)

Thanks

David


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Re: Changing Default for Not Null to NOTHING

2002-03-14 Thread David M. Peak

ok, more specific:

here is a table:

CREATE TABLE FOO (foo1 int NOT NULL, foo2 int NOT NULL Default 1)

If I do an insert into the FOO table with the following:

INSERT INTO FOO (foo1,foo2) VALUES (1,1)

Everything works as planned.

If I do an insert into the FOO table with the following:

INSERT INTO FOO (foo1) VALUES (1)

Everything works as planned

If I do an insert into the FOO table with the following:

INSERT INTO FOO (foo2) VALUES (1)

I want an error.  But what happens is that the db engine explicitly defines
a default of 0 to the foo1 column even though I defined it as int NOT NULL
and did not give it a default.

After I change the configuration with the following:

CXXFLAGS=-DDONT_USE_DEFAULT_FIELDS ./configure

and re-create my table in a new database, I do get an error on

INSERT INTO FOO (foo2) VALUES (1)

because I didn't give a value for foo1, but I also get an error on this:

INSERT INTO FOO (foo1) VALUES (1)

even though I have explicitly defined a default for foo2.

So.  What I want:

No default unless I define one
Error on NOT NULL if I don't define a default
Default inserted if NOT NULL and I define a default and I don't specify a
value in an insert statement

Does this make more sense?

Thanks,
David

- Original Message -
From: Egor Egorov [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, March 13, 2002 6:54 AM
Subject: Re: Changing Default for Not Null to NOTHING


 David,
 Friday, March 08, 2002, 11:03:30 PM, you wrote:

 DMP I just tried something and would a second opinion:

 DMP I re-configured my MySQL server on my RH Linux machine using the
following :

 DMP CXXFLAGS=-DDONT_USE_DEFAULT_FIELDS ./configure

 DMP and ran the following SQL:

 DMP CREATE TABLE FOO (foo int NOT NULL DEFAULT 5, foo1 INT NULL);

 DMP INSERT INTO FOO (foo1) VALUES (1);

 DMP MySQL-Error:
 DMP ==
 DMP 1048 - Column 'foo' cannot be null.

 DMP So is it true that you either have an installation of MySQL that will
have
 DMP defaults for NOT NULL defined columns (explicity or implied) or you
can have
 DMP an installation that does not allow default values for NOT NULL
defined
 DMP columns?

 Yes, if you specify CXXFLAGS=-DDONT_USE_DEFAULT_FIELDS ./configure
 you will have errors in INSERT statements for NOT NULL columns
 inserting NULL values.

 DMP What I want is to be able to create a table that has columns defined
as NOT
 DMP NULL and if I don't assign a default to that column, I want an error
if I
 DMP don't give it a value on insert.  What I DON'T want is to define a
column as
 DMP NOT NULL with NO EXPLICIT DEFAULT to get a value if it is left out of
an
 DMP insert statements list of column/value set.
 DMP Does this make sense??

 Looks like it does but try to be more clear.


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Re: Changing Default for Not Null to NOTHING

2002-03-12 Thread David M. Peak

Beings as I haven't gotten an answer to this, is there a better place to
find information on this?


- Original Message -
From: David M. Peak [EMAIL PROTECTED]
To: MySQL List [EMAIL PROTECTED]
Sent: Friday, March 08, 2002 1:03 PM
Subject: Re: Changing Default for Not Null to NOTHING


 I just tried something and would a second opinion:

 I re-configured my MySQL server on my RH Linux machine using the following
:

 CXXFLAGS=-DDONT_USE_DEFAULT_FIELDS ./configure

 and ran the following SQL:

 CREATE TABLE FOO (foo int NOT NULL DEFAULT 5, foo1 INT NULL);

 INSERT INTO FOO (foo1) VALUES (1);

 MySQL-Error:
 ==
 1048 - Column 'foo' cannot be null.

 So is it true that you either have an installation of MySQL that will have
 defaults for NOT NULL defined columns (explicity or implied) or you can
have
 an installation that does not allow default values for NOT NULL defined
 columns?

 What I want is to be able to create a table that has columns defined as
NOT
 NULL and if I don't assign a default to that column, I want an error if I
 don't give it a value on insert.  What I DON'T want is to define a column
as
 NOT NULL with NO EXPLICIT DEFAULT to get a value if it is left out of an
 insert statements list of column/value set.

 Does this make sense??




 - Original Message -
 From: David M. Peak [EMAIL PROTECTED]
 To: MySQL List [EMAIL PROTECTED]
 Sent: Thursday, March 07, 2002 9:22 AM
 Subject: Changing Default for Not Null to NOTHING


  Is there a way for me to NOT have a default value for a column in a
table
  that I define as NOT NULL?
 
  EXAMPLE SQL:
 
  mysql CREATE TABLE FOO (foo1 int NOT NULL);
  Query OK, 0 rows affected (0.05 sec)
 
  mysql DESCRIBE FOO;
  +---+-+--+-+-+---+
  | Field | Type| Null | Key | Default | Extra |
  +---+-+--+-+-+---+
  | foo1  | int(11) |  | | 0   |   |
  +---+-+--+-+-+---+
  1 row in set (0.00 sec)
 
  mysql
 
  I don't want the default to be 0 (zero)  Any ideas?
 
 
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Re: Changing Default for Not Null to NOTHING

2002-03-08 Thread David M. Peak

I just tried something and would a second opinion:

I re-configured my MySQL server on my RH Linux machine using the following :

CXXFLAGS=-DDONT_USE_DEFAULT_FIELDS ./configure

and ran the following SQL:

CREATE TABLE FOO (foo int NOT NULL DEFAULT 5, foo1 INT NULL);

INSERT INTO FOO (foo1) VALUES (1);

MySQL-Error:
==
1048 - Column 'foo' cannot be null.

So is it true that you either have an installation of MySQL that will have
defaults for NOT NULL defined columns (explicity or implied) or you can have
an installation that does not allow default values for NOT NULL defined
columns?

What I want is to be able to create a table that has columns defined as NOT
NULL and if I don't assign a default to that column, I want an error if I
don't give it a value on insert.  What I DON'T want is to define a column as
NOT NULL with NO EXPLICIT DEFAULT to get a value if it is left out of an
insert statements list of column/value set.

Does this make sense??




- Original Message -
From: David M. Peak [EMAIL PROTECTED]
To: MySQL List [EMAIL PROTECTED]
Sent: Thursday, March 07, 2002 9:22 AM
Subject: Changing Default for Not Null to NOTHING


 Is there a way for me to NOT have a default value for a column in a table
 that I define as NOT NULL?

 EXAMPLE SQL:

 mysql CREATE TABLE FOO (foo1 int NOT NULL);
 Query OK, 0 rows affected (0.05 sec)

 mysql DESCRIBE FOO;
 +---+-+--+-+-+---+
 | Field | Type| Null | Key | Default | Extra |
 +---+-+--+-+-+---+
 | foo1  | int(11) |  | | 0   |   |
 +---+-+--+-+-+---+
 1 row in set (0.00 sec)

 mysql

 I don't want the default to be 0 (zero)  Any ideas?


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Changing Default for Not Null to NOTHING

2002-03-07 Thread David M. Peak

Is there a way for me to NOT have a default value for a column in a table
that I define as NOT NULL?

EXAMPLE SQL:

mysql CREATE TABLE FOO (foo1 int NOT NULL);
Query OK, 0 rows affected (0.05 sec)

mysql DESCRIBE FOO;
+---+-+--+-+-+---+
| Field | Type| Null | Key | Default | Extra |
+---+-+--+-+-+---+
| foo1  | int(11) |  | | 0   |   |
+---+-+--+-+-+---+
1 row in set (0.00 sec)

mysql

I don't want the default to be 0 (zero)  Any ideas?


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Max Row Length

2002-01-18 Thread David M. Peak

is there a max row length for MyISAM tables?  I'm having a hard time finding
it.



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Re: Changing the locations of the tables

2001-12-18 Thread David M. Peak

Don't forget to ensure that the account that the mysqld is running under has
the proper permissions to the new directory.  I ran into that one before..


- Original Message -
From: Matthew Smith [EMAIL PROTECTED]
To: 'MySQL' [EMAIL PROTECTED]
Sent: Tuesday, December 18, 2001 10:24 AM
Subject: RE: Changing the locations of the tables


 I think the key was _without_ reinstalling.
 I emailed this privately first, but should work with minimum downtime
 and preserve data:


 mysqladmin -u . shutdown
 su
 cd /var/lib
 tar -cf - mysql | (cd /usr/lib ; tar xvBpf -)
 rm -rf mysql

 vi /etc/my.cnf
 :%s/\/var\/lib\/mysql/\/usr\/lib\/mysql/g
 :x

 ...restart mysqld.

 -Original Message-
 From: Bill Blowitz [mailto:[EMAIL PROTECTED]]
 Sent: 18 December 2001 17:54
 To: 'Stephen Johnson'; 'MySQL'
 Subject: RE: Changing the locations of the tables


 Here you go:-)
 [root@server src]# rpm  -i MySQL-3.XX.XX-1.src.rpm
 [root@server src]# tar -xvzf ../../src/redhat/SOURCES/mysql-3.XX.XX.tar.gz
 [root@server src]# cd mysql-3.XX.XX
 [root@server mysql-3.XX.XX]# ./configure \
 --prefix=/usr/lib/mysql
 [root@server mysql-3.XX.XX]# make
 [root@server mysql-3.XX.XX]# make install
 [root@server mysql-3.XX.XX]# scripts/mysql_install_db

 XX.XX is your mysql version

 Good Luck!

 -Original Message-
 From: Stephen Johnson [mailto:[EMAIL PROTECTED]]
 Sent: Tuesday, December 18, 2001 9:19 AM
 To: MySQL
 Subject: Changing the locations of the tables


 Is there a way ­ without reinstalling MySQL to change the locations of the
 database tables?

 For example right now they are in

 /var/lib/mysql

 I want them

 /usr/lib/mysql

 Thanks in advance

 --
 
 Stephen Johnson
 [EMAIL PROTECTED]
 http://www.pets4u.com
 Owner / Founder
 
 -- your next best friend is waiting for you --



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Re: mysql password

2001-12-18 Thread David M. Peak

try:

mysqladmin -u root password new_password_here


- Original Message -
From: Jeremiah Jester [EMAIL PROTECTED]
To: 'MySQL' [EMAIL PROTECTED]
Sent: Tuesday, December 18, 2001 10:50 AM
Subject: mysql password


 Im attempting to install mysql. The service started and everything seems
to
 be going ok except for that I can't set the root password for the mysql
 server.

 To reset password i type:

 /usr/bin/mysqladmin -u root -p mypassword

 Then I get the following error:

 /usr/bin/mysqladmin: connect to server at 'localhost' failed
 error: 'Access denied for user: 'root@localhost' (Using password: YES)'

 Anyone, anyone? Bueller? Fry?

 JJ


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