RE: MySQL Authors Needed

2001-10-31 Thread Jay Fesco

 Subject: MySQL Authors Needed


 Hi,

 I am looking for experienced writers who would like to write a
 complete and
 authoritative reference on MySQL.

 Thanks,


 Chris Johnson

Paul DuBois has already done a bang-up job.  His book, MySQL (New Riders),
is the bible as far as I'm concerned, and I think alot of people here would
agree.

Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: A space is contained in colum??

2001-10-31 Thread Jay Fesco

 When I create a table, one colum contains a space, how can I caeate it
 correctly?
 
 like:
 
 CREATE TABLE mytable(
  name CHAR(60) NOT NULL,
  Email VARCHAR(50) NOT NULL,
  Thrid colum CHAR(60), ///Here there is a
 space?
  PRIMARY KEY (Email)
 );
 

MySQL does not allow spaces in column names.  Try: ThridColum CHAR(60), 

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RE: general sql question

2001-10-18 Thread Jay Fesco

  select count(distinct(email)) from subscribes;
 
  But that's not legal.  Any thoughts/ideas you all could send in would be
  great.  TIA!
 
  Chris Blessing
  [EMAIL PROTECTED]
  http://www.330i.net
 

 Try:

 select count(distinct email) from subscribes;

Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: How to Dump only Data

2001-10-02 Thread Jay Fesco

From page 620 in MySQL...

* -t or --no-create-info
Does not write CREATE TABLE statements

Since DROPs are off by default, this should give you just the insert
statements.

The other option (as already suggested) is SELECT INTO OUTFILE.

Jay Fesco

 -Original Message-
 From: fi-claudemir [mailto:[EMAIL PROTECTED]]
 Sent: Tuesday, October 02, 2001 12:55 PM
 To: mysql
 Subject: How to Dump only Data


 Hi

 How to Dump only the data from a Table.
 I took a look at the mysqldump options, but I didn't find something that
 works fine !

 Regards
 Claudemir F. Martins


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RE: need for strength

2001-09-25 Thread Jay Fesco

 Hi

 We have a sophisticated Underwiting management system written in MS
 Access.

 The programs and the data are in separate mdb's.

 The time has come to improve the product's client/server and
 web strengths.

 We came across mysql whilst investigating MS SQL server.

 Can we upsize our Access database to mysql easily and continue to use
 the Access programs to work with the mysql data?

 Thank you

 Chris Needs  Peter Jacobsohn
 Telek Systems



Chris  Peter,

The code will work with slight modifications AS LONG AS the database doesn't
use subselects, stored procedures, stored queries, or (I just learned -
thanks, Will!) joins in updates or deletes.  I had to convert a
'sophisticated' website from Access to MySQL about a year ago, and there are
many times that I felt I'd be better off recreating the database from
scratch.  The sheer volume of data (and the extremely denormalized structure
of the original db) kept me from doing just that.   There is no clear-cut
yes or no here.  You will have to look closely at the code and the original
database.  Yes, it can be done, but there is the possibility of a major
rewrite of your code.

Good Luck!

Jay Fesco


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RE: Update problem

2001-09-24 Thread Jay Fesco


 imho, the fact that mysql does not support joins in UPDATE and DELETE
 statements is by far its greatest weakness.  I have posted a couple of
 messages to this group to see what creative work-arounds others
 have used to
 fill this gaping hole in functionality.  Alas, no one has felt
 like sharing
 their thoughts on this subject.


Will (and Phil)

I think no-one's replied because the answer is really simple - create a
recordset using Select for the records you are interested in (using your
joins), then use that recordset to perform your UPDATE or DELETE.  I have to
deal with the same situation Phil describes quite often, but I've never
missed the 'join in update' function.  Not that it wouldn't be nice, but the
workaround is not rocket surgery.

Jay Fesco


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RE: Update problem

2001-09-24 Thread Jay Fesco

Will,

First of all, if I sounded condescending, it was not my intent.  I apologize
if that's how you (or anyone else) took it.  I will, however, respond to
your smoking response to mine:

  I think no-one's replied because the answer is really simple

 Oh I don't know Jay, I've seen some threads 4-5 responses deep to
 issues far simpler than this.

That does not make those questions and answers on-topic and appropriate or
your question any more complex.

 I understand that you could use REPLACE with this newly created
 recordset to simulate the UPDATE w/JOIN, but your it's so simple
response
 glosses over the details of what to do with the delete.  The only way I've
conceived is
 to carry an isdeleted...

Perhaps you're using the wrong scripting language.  Just because you have a
hammer does not make everything a nail.

 Well I'm happy for you but did you ever stop and consider that what you do
 with your database may not necessarily be representative of what everyone
 does?

Let's see - I read records, I do something with them, I update and delete
them...  No, I never stopped to think that you (or anyone) might be doing
something different.

 In my situation, one that is certainly not unique, I have
 tables with 100+ fields and many million rows.  The SELECT INTO/REPLACE
FROM
 and SELECT INTO/REPLACE FROM/DELETE WHERE approaches to UPDATE FROM and
 DELETE FROM are an order of magnitude less efficient.
 This inefficiency coupled with the
 need (using myisam) to lock the entire table during updates makes for some
 not-so-simple design challenges.

So you feel that forcing a lock while you do a huge join/delete is more
efficient than:

* Doing a select (using joins) against your properly indexed table (which
should NOT require a lock in that you only want the record ID's)
* Using the method of your choosing, deleting or updating the records so
identified?  I don't know the benchmarking which compares a WHERE IN()
versus issuing individual updates/deletes while the table is open, but it
would be easy enough to test.

 In closing, I offer a couple rhetorical questions:
 1. Who is the bigger idiot... The person who asks a naive question or the
 person who, upon hearing a question he knows the answer to, assumes the
 asker is an idiot?

Never did I assume that you were an idiot.  What I assumed (and still do) is
that you are overcomplicating the question.

 2. Does your condescending attitude win you as many points with your users
 as it did with me?

 Will French


I haven't had a complaint from my users yet.  Again, If I sounded
condescending, it was not my intent.

Jay Fesco


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RE: I'm sure this should be simple but I can't get it

2001-09-20 Thread Jay Fesco

 Hi all,

 I'm trying to create a query that returns a set of data based on
 two tables.

 A basic description is that If Column A in Table 1 is Equal to Column A in
 table 2 then it returns the data from Column B in Table 2.
 However, Column A
 in Table 1 may contain a list of words that need to be matched
 not just one
 single entry.

 If someone could point me in the right direction for some code or
 a solution
 I would be very appreciative.


select Table2.ColumnB
from Table1, Table2
WHERE Table1.ColumnA = Table2.ColumnA

Jay Fesco

Magical Mystery Words: database,sql,query,table




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RE: I'm sure this should be simple but I can't get it

2001-09-20 Thread Jay Fesco

 
  A basic description is that If Column A in Table 1 is Equal to
 Column A in
  table 2 then it returns the data from Column B in Table 2.
  However, Column A
  in Table 1 may contain a list of words that need to be matched
  not just one
  single entry.
 
  If someone could point me in the right direction for some code or
  a solution
  I would be very appreciative.
 

 select Table2.ColumnB
 from Table1, Table2
 WHERE Table1.ColumnA = Table2.ColumnA


And just in case I misunderstood the intent:
If 'Column A in Table 1' has space-delimited words in each record such as:
abc def ghi
I believe you could use a combination of CONCAT and REPLACE.  The WHERE
clause would look something like:

WHERE Table2.ColumnA IN (CONCAT('',REPLACE(Table1.ColumnA,' ',','),''))

I haven't tested this at all and it may fail miserably, but it's where I
would start.

Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: Semi colons in text fields in update statement

2001-09-20 Thread Jay Fesco


 There is no need for such an escape sequence because semicolons
 in strings are not special.  Maybe it's an ADO bug.


Paul et al - I think his problem is with quotes, not semicolons.  The line
Update tblCompany SET CoName='quot\;testerquot\;' WHERE CoID=109 is what
leads me to believe this.

Try double-escaping your quotes.  A single escape usually only works until
the first time it's referenced in code, at which time it is unescaped and
becomes a straight quote again.  I've had problems with this as well, but
\\ seems to work well.  A RegExp replace on the fly just before the update
is how I usually handle it in ASP.

Jay Fesco
Confusing issues since 1963

Magical Mystery Words: database,sql,query,table


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RE: Help!

2001-09-18 Thread Jay Fesco



 I try the following command, and get that error every time:


 mysql select company, tele, contact, mariacust.comments
 -  from
 - customers where tele = mariacust.tele GROUP BY company;
 ERROR 1109: Unknown table 'mariacust' in field list
 mysql


 I don't quite understand why this happens since everything exists

 Armando


Everything may exist, but you didn't reference mariacust in your _from_
statement.

select customers.company, customers.tele, customers.contact,
mariacust.comments
from
customers, mariacust
where custmers.tele = mariacust.tele
GROUP BY customers.company;

Or something like that...

Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: reset auto_increment?

2001-09-17 Thread Jay Fesco

  Can someone tell me how to reset a column's auto_increment starting point
  back to 0 in mysql ?

  Thanks

  Paul

According to Paul DuBois on page 169 of MySQL by New Riders (which you
should buy):

ALTER TABLE t
DROP i,
ADD i INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY

Jay



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RE: copying information

2001-09-17 Thread Jay Fesco


 Dear Sirs,

 I have a database with a lot of information. Can I copy that
 information to
 another server??? It's because I'm gonna change of hosting
 company!!! (I use
 PHP and Perl)


 Thanking in advance,
 Nuno Lopes


MySQLDump is what you need, and is quite well documented (many examples
exist in the list archives as well.) Good luck!

Jay Fesco


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RE: Size of DB

2001-09-13 Thread Jay Fesco


 I'm new to MySQL and I was wondering if there was a command that you can
 issue to see the current size of a mysql database (in kb or MB)?


If your intent is to get the size 'on the fly' from within a web page, you
can use the filesystem object.  I use ChiliSoft ASP but the solution is the
approximately the same for IIS ASP:

Syntax for a function to return filesize (in JScript/ASP) is:

function ShowFileSize(filespec)
{
var fs, f, s;
fs = new ActiveXObject(Scripting.FileSystemObject);
f = fs.GetFile(filespec);
s = f.Name +  uses  + f.size +  bytes.;
Response.Write(s);
}


Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: errors 2006 and 2000

2001-09-13 Thread Jay Fesco



 create table saveMovie (
 - id int not null auto_increment,

You attempted to create a table without telling MySQL which database to use
(or without creating a database in the first place).  Either:

\u MyDatabaseName
-OR-
create database MyDatabaseName;
\u MyDatabaseName;

before trying to create a table.

Jay Fesco

Magical Mystery Words: database,sql,query,table



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RE: mysqldump question (very basic)

2001-09-11 Thread Jay Fesco


 Hi.

 I'm trying to run a mysqldump.  I enter mysqldump
 -databases in order to backup all the databases. For
 some reason all I'm getting back is a help on the
 mysqldump. What am I doing wrong?

 thanks

 =


It returns help whenever it doesn't understand what you're asking it to do
(or if your command is incomplete.)  The following line works to backup a
remote database to a local PC - Running the same version of MySQL both
places, and a user is setup on the MySQL server that allows remote read
(IP-restricted in my case, but I have a fixed IP):

c:/mysql/bin/mysqldump -h www.mydomain.com -u
UserID -pPassword --add-drop-table MyDBName  c:/ServerDumps/MyDBName.sql

I run a batch job with one of these for every database every day.

Hope that gets you started!

Jay Fesco


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RE: Licensing terms for an Intranet site

2001-08-30 Thread Jay Fesco

  -- 
  Jeremy D. Zawodny, [EMAIL PROTECTED]
  Technical Yahoo - Yahoo Finance
  Desk: (408) 349-7878   Fax: (408) 349-5454   Cell: (408) 685-5936
  
 
 Is anyone else getting a strange flag associated with Jeremy's 
 email, or is it just me?  Every one of his posts comes in flagged 
 in Outlook, and the headers have a line which reads:
 
 X-message-flag: Mailbox corrupt.  Please upgrade your mail software.
 
 This is definitely OT for this forum, but this forum is the only 
 place where I see the problem.
 
 Jay

database,sql,query,table

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RE: Licensing terms for an Intranet site (way beyond OT)

2001-08-30 Thread Jay Fesco

 i think this is jeremy's not-so-subtle way of bashing your choice of email
 client.
 check this link:
 http://www.rodos.net/outlook/#messageflag

 -ravi.


Yeah, yeah - I got it.  Only problem is that I DON'T have a choice (company
policy et al)...
\:^{

Jay Fesco

Magical Mystery Words: database,sql,query,table


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RE: COUNTNULL function

2001-08-30 Thread Jay Fesco

Calvin,

Maybe I'm just confused (fairly likely), but it appears that you are
confusing 'null' with zero.  If you actually want to count all values
including nulls, COUNT(*) will do it.  If you want to count NON nulls,
COUNT(a_field_name) does it.  SUM(a_field_name) returns the sum of all
non-null values for a_field_name.  Appropriate WHERE, IN, or NOT IN clauses
combined with a version of the COUNT and/or SUM functions should give you
the results you need.

Jay


 Evening Gurus,

   I have a small problem that I've beaten to death the past 2 days. I am
 trying to get the value of a row, and update another table accordingly.
 The data within the row is either a 1 or 0.  My issue is in trying to
 increment a count for both 1's and 0's.

   In other words, I want to SUM up all the 1's and update a table with
 this sum. I also want to sum up all the 0's and add this total count to
 the table as well. This can be accomplished in  a long query, or in
 through a language..what I am trying to accomplish is to get the total sum
 of each value without using a WHERE clause. Something akin to:

 SELECT ...
  SUM(bool_was_connected),
  COUNTNULL(bool_was_connected),
 etc...

 the SUM will sum up all non-null values. The COUNTNULL would sum up all
 rows which have a value of 0.

 Does anyone have a UDF for this function? I currently don't have room on
 my laptop to download the mysql source code in order to write this up. (
 Also have not written a udf for mysql up to this point either)

 Thankyou kindly for any reply,
 Calvin




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RE: selecting what is not in something

2001-08-27 Thread Jay Fesco

Jeff,

If the result table from the inner select is not huge, I usually issue the
inner query by itself first, then build (in my scripting language of choice)
a comma-delimited text field containing the results that I don't want in my
final table.  I then expand that text field into the 'NOT IN' clause, quoted
as appropriate.  It works reasonably well, but I haven't benchmarked the
speed issues with large results from the inner query.  Hope that helps.

If MySQL asks me, my TOP priority is INNER SELECTs.  But that's probably
just me...

Jay Fesco

-Original Message-
From: Jeff Shipman - SysProg [mailto:[EMAIL PROTECTED]]
Sent: Monday, August 27, 2001 11:38 AM
To: [EMAIL PROTECTED]
Subject: selecting what is not in something


I have two tables and that have a couple of
identical columns. I would like to find out
what of a certain column is in one table and
not in another. I've tried the following, but
I get errors:

select col1 from tab1 where col1 not in (select col1 from tab2);
select tab1.col1 from tab1,tab2 where tab1.col1 not in tab2;

Please tell me how I can do this type of
query.

Jeff Shipman   E-Mail: [EMAIL PROTECTED]
Systems Programmer Phone: (505) 835-5748
NMIMT Computer Center  http://www.nmt.edu/~jeff


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RE: Import from Access to MySql

2001-08-21 Thread Jay Fesco

snip
Anyone can tell me how can i import an access db to mysql.
/snip

Go to http://www.mysql.com/downloads/contrib.html.  Many contributed tools
plus a couple of macros that are run from within Access.

Jay Fesco


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RE: aggressive dolphin?

2001-08-16 Thread Jay Fesco

snip ...I am somewhat disappointed that you
chose the dolphin for your logo because of the good nature of this animal.
...dolphins seem to have murderous urges unrelated to the need for food’.
/snip

Theo, are you still irritated that the rest of us got our 'So Long and
Thanks For All The Fish' fishbowls and you didn't?  I think Douglas Adams
had it right on the mark...

(If you don't get the reference, you will need to read the inappropriately
named Hitchhikers Guide to the Galaxy trilogy)

\:^) (We need a 'Sorry for the emoticon' emoticon)

Jay Fesco

database,sql,query,table


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RE: WANTED: Utility to reverse engineer existing database II

2001-08-07 Thread Jay Fesco

...Some of my tables have thousands of records and I may only want the first
200 or so.  I did not see
an option on mysqldump that would limit the number of records.  Any ideas
without writing a program?

Kevin




Try the WhereClause option in mysqldump.

Syntax is:

-w 'where_clause'
-or-
--where='where_clause'.

Of course, 'where_clause' would be something like 'id200' or whatever's
appropriate.

It's on page 620 of 'MySQL' by Paul DuBois (New Riders).  Invaluable book,
btw.

Jay Fesco


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RE: WANTED: Utility to reverse engineer existing database

2001-08-07 Thread Jay Fesco

Or you can just use the whereclause option in MySQLDump.
(i.e. -w'RecordID200')

http://www.mysql.com/doc/m/y/mysqldump.html

Jay

-Original Message-
From: Stefan Hinz [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 07, 2001 11:47 AM
To: Kevin; [EMAIL PROTECTED]
Subject: Re: WANTED: Utility to reverse engineer existing database


Dear Kevin,

 index, etc.) needed to recreate the database.  Does such a utility
exist?

Yes. It's called PhpMyAdmin, and the recent version supports everything
you asked for. You can get it at www.sourceforge.net - look for
PhpMyAdmin there.

Note: You need to have PHP installed in order to run this toolset.

Regards,

--
  Stefan Hinz
  Geschäftsführer / CEO iConnect e-commerce solutions GmbH
  #  www.js-webShop.com www.iConnect.de
  #  Gustav-Meyer-Allee 25, 13355 Berlin
  #  Tel: +49-30-46307-382  Fax: +49-30-46307-388

- Original Message -
From: Kevin [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, August 06, 2001 10:57 PM
Subject: WANTED: Utility to reverse engineer existing database



 I need a utility that will probe my existing mysql database, analyze
the 90+
 tables and spit out the data definition language (create table, create
 index, etc.) needed to recreate the database.  Does such a utility
exist?

 Kevin


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RE: client/server

2001-07-31 Thread Jay Fesco


Hello!

I'm a newbie at mysql and i'm looking for a client program for win23 that
can accsess a mysql database and create and alter tables.
The mysql database is placed on a linux box in my lan, and im not too keen
of sitting in console. The linux box also holds the apache server,with php
but
i edit all my code on the win2k box.

Thanks in advance Lasse



Lasse - Go to www.mysql.com and get the Win32 version of MySQL and MyODBC.
There are numerous GUI tools available for Windoze, but I find myself just
using the command line version most of the time.  I fully emulate my Linux
MySQL environment on my Win2k machine for development, which is what I
believe you want to do.

Good Luck!

Jay F.


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RE: MySql Server creating problem

2001-07-26 Thread Jay Fesco

hi,
I am working on linux.
my mysql server is creating problems. when i do ./mysqld start,
i  get server started ok.
But i am not abel to login
the message i get is
ERROR 2002: Can't connect to local MySQL server through socket'
/var/lib/mysql/mysql.sock' (2)

and when i try to stop the server, i get the mesage failed.
what couldbe the problem?

--
K.S.Selva Prakash
Tachyon Technologies Pvt Ltd.



Selva - this can indicate that either mysql.sock is owned by the wrong user
(it should either be root or mysql on most machines) or that it is not
located in the correct place.  The mysql.sock that you refer to is PROBABLY
a link to the 'real' mysql.sock located in another directory.  It could be a
recursive link, or just linked to a non-existant file.  FIND for mysql.sock
on your machine and see how many places it lives, then verify that the one
giving the error (/var/lib/mysql/mysql.sock) is linked to the 'real' one.

This may NOT be your issue, but it happened on our box after a reload of
MySQL.  Good luck!

Jay Fesco


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