Left Join Problem
I'm not currently on the mailing list so please reply directly. I have three tables joined as follows (Table WORKPLACE is just a codes lookup with wrk_id and name): MEMBERS(A) | EMPLOY(B) | WORKPLACE(C) -- mem_id mem_id workplacewrk_id I want to select elements from from all three tables but run into a problem where B.workplace is NULL (i.e. members are excluded from result set where B.workplace has been left blank (no join between B and C). I know this can be solved using and outer/left join but I can't seem to get the syntax right to get elements from all three tables. Another solution I can think of is to replace all the NULL's in EMPLOY(B) with a logical value and then insert a corresponding entry in the lookup table WORKPLACE(C). I would also set the default for EMPLOY.workplace to be the same. _ Scott Gerhardt, P.Geo. Gerhardt Information Technologies _ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Severe problem in handling timestamp column type
MySQL always updates the first timestamp column on update, regardless.
-Original Message-
From: Alex Dusty [mailto:[EMAIL PROTECTED]]
Sent: February 1, 2001 7:28 PM
To: [EMAIL PROTECTED]
Subject: Severe problem in handling timestamp column type
Description:
There is a _severe_ problem when dealing with "timestamp" column:
if I update
a column, also other columns are affected! I enclose a sample script to
show the problem
How-To-Repeat:
create table a(t1 timestamp, t2 timestamp);
insert into a values("2001-01-20","1999-03-04");
select * from a;
update a set t2="1998-05-06";
select * from a;
drop table a;
-- The second "select" shows that column t1 changed too!
Fix:
I don't know. I used datetime type instead of timestamp and it
_seems_ working.
Submitter-Id:submitter ID
Originator: Alex Dusty
Organization: JapoTek
MySQL support: none
Synopsis: Error in handling timestamp columns
Severity: critical
Priority: high
Category:mysql
Class: sw-bug
Release: mysql-3.23.32 (Official MySQL RPM)
Server: /usr/bin/mysqladmin Ver 8.14 Distrib 3.23.32, for
pc-linux-gnu on i686
Copyright (C) 2000 MySQL AB MySQL Finland AB TCX DataKonsult AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license
Server version3.23.32
Protocol version 10
ConnectionLocalhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 15 hours 23 min 8 sec
Threads: 2 Questions: 8036 Slow queries: 0 Opens: 927 Flush
tables: 1 Open tables: 12 Queries per second avg: 0.145
Environment: (tested also in other environments, always versione 3.23.32)
System: Linux japot.dyndns.org 2.2.19pre7 #8 Tue Jan 30 16:33:29
GMT+1 2001 i686 unknown
Architecture: i686
Some paths: /usr/bin/perl /usr/bin/make /usr/bin/gmake
/usr/bin/gcc /usr/bin/cc
GCC: Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/2.96/specs
gcc version 2.96 2731 (Red Hat Linux 7.0)
Compilation info: CC='egcs' CFLAGS='-O6 -fomit-frame-pointer
-mpentium' CXX='egcs' CXXFLAGS='-O6 -fomit-frame-pointer
-felide-constructors -fno-exceptions -fno-rtti -mpentium'
LDFLAGS=''
LIBC:
lrwxrwxrwx1 root root 11 Nov 23 01:05
/lib/libc.so.6 - libc-2.2.so
-rwxr-xr-x1 root root 4761074 Dec 15 12:39 /lib/libc-2.2.so
-rw-r--r--1 root root 22855536 Dec 15 12:37 /usr/lib/libc.a
-rw-r--r--1 root root 178 Dec 15 12:37 /usr/lib/libc.so
Configure command: ./configure --disable-shared
--with-mysqld-ldflags=-all-static
--with-client-ldflags=-all-static --enable-assembler
--with-mysqld-user=mysql
--with-unix-socket-path=/var/lib/mysql/mysql.sock --prefix=/
--with-extra-charsets=complex --exec-prefix=/usr
--libexecdir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share
--localstatedir=/var/lib/mysql --infodir=/usr/info
--includedir=/usr/include --mandir=/usr/man --without-berkeley-db
'--with-comment=Official MySQL RPM'
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RE: How to select the 10 last items from a table?
SELECT * FROM item ORDER BY ID LIMIT 10 or change to "ORDER BY ID DESC" to get the desired result. - Scott May be it could work SELECT * FROM item ORDER BY ID LIMIT count(*)-10,10 or SELECT * FROM SELECT * FROM item ORDER BY ID DESC LIMIT 10 ORDER BY ID - Original Message - From: Karlsson Andreas-andkar01 [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, January 30, 2001 6:00 PM Subject: How to select the 10 last items from a table? Hi, I have a table were all rows have their own ID. How can I select only the last items out of this table? This command fixes it but I receive the items in the wrong order that I would like them... SELECT * FROM item ORDER BY ID DESC LIMIT 10 brgds Andreas Andreas Karlsson MAGNET- Motorola Applications Global Network Campus Grsvik 2 371 75 Karlskrona Phone: +46-455-379 306 E-mail:[EMAIL PROTECTED] Become a MAGNET member - register at: http://www.motorola.com/developers/wireless/ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: (+) Help needed
Slight correction, for some reason the query below does NOT work on my sample DB unless I quote the date values. This should work now: SELECT IP, Size, Date FROM your_table WHERE Date BETWEEN '2001-02-01' AND '2001-05-01'; so and i have Mysql table with IP | Size | Date| -- 213.32.44.11 | 3|2001-01-11-12| -- 213.32.44.11 | 3|2001-01-11-13| -- 213.32.44.12 | 3|2001-01-12-12| -- 213.32.44.14 | 3|2001-01-13-17| -- 213.32.44.16 | 3|2001-01-14-11| -- 213.32.44.111 | 3|2001-02-15-10| -- 213.32.44.121 | 3|2001-01-13-10| -- 213.32.44.131 | 3|2001-01-15-10| -- So i need SELECT from table only record between values $dat1 and $dat2 how to do this ?! Thx _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: 3 million+ records problems.
Have you tried adding an index on id? -Original Message- From: taree [mailto:taree]On Behalf Of Manuel Capinha Sent: January 27, 2001 12:10 PM To: [EMAIL PROTECTED] Subject: 3 million+ records problems. Hi! I've got a table with 3 million+ records. This table has only to columns: an int and a varchar(80). I need to periodically execute a statement like: "SELECT id,count(*) FROM names GROUP bY id", which takes very long time to end. I'm using perl (DBI) to access this table. When I do a select by id (SELECT name FROM names WHERE id=1) it hangs forever for very large results (1million). I'm running mysql 3.22.29 on FreeBSD 3.4. Would an upgrade to the latest 3.23 help ? Would an upgrade to FreeBSD 4 or maybe Linux help ? The id column is indexed, but i believe this is A Good Thing(tm). I've checked past messages of this mailing list and i couldn't find anything that seemed relevant to my case. Can anyone give me some suggestions to speed things up ? Thanks in advance. Manuel Capinha, who as just seen his weekend ruined. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: 3 million+ records problems.
Adding another 192megs of ram or so would really boost performance. When I increased the RAM on my PIII 450Mhz from 128 to 256Mb, performance almost doubled for most queries on a 72k record table. From a mysqldump: # # Table structure for table 'names' # CREATE TABLE names ( id int(10) unsigned DEFAULT '0' NOT NULL, name varchar(80) DEFAULT '' NOT NULL, KEY id (id) ); The machine is an Intel Celeron 533Mhz, with 64 mb of RAM, with dual 10 GB EIDE hard drives (doing RAID), running FreeBSD 3.4-Release. Artem Koutchine wrote: Well then, be so kind and tell us your index configuration and your hardware configuration. - Original Message - From: "Manuel Capinha" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, January 27, 2001 9:10 PM Subject: 3 million+ records problems. Hi! I've got a table with 3 million+ records. This table has only to columns: an int and a varchar(80). I need to periodically execute a statement like: "SELECT id,count(*) FROM names GROUP bY id", which takes very long time to end. I'm using perl (DBI) to access this table. When I do a select by id (SELECT name FROM names WHERE id=1) it hangs forever for very large results (1million). I'm running mysql 3.22.29 on FreeBSD 3.4. Would an upgrade to the latest 3.23 help ? Would an upgrade to FreeBSD 4 or maybe Linux help ? The id column is indexed, but i believe this is A Good Thing(tm). I've checked past messages of this mailing list and i couldn't find anything that seemed relevant to my case. Can anyone give me some suggestions to speed things up ? Thanks in advance. Manuel Capinha, who as just seen his weekend ruined. - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: how many colums can i create before it becomes unusable?
Hello Anna, According to the MySQL Crash-Me the maximum numbers for 3.23.xx are: - Columns in table 3398 - max table row length (without blobs) 65534 - table row length with nulls (without blobs) 65502 If you understand the concepts of DB normalization don't bother reading the following: 300+ columns seems like a lot of columns for member information. Are you sure you can't normalize your DB a little more by grouping or data into relevant tables? Example: table members: id | first | last | job_1 | job_2 | job_3 | job_4 | You could create another table called jobs and your resulting tables would look like: table members mem_id | first | last | table jobs job_id | mem_id | job | job_no | Regards, -Scott i've been asked to design a for a new web-based system which stores lots of data on it's members. There are currently about 500,000 member records. the problem is that i have to store at least 248 pieces of information on each user. i've made the system as relational as possible so that for each user record, i am only storing integers, for the most part tinyints and smallints. Is there a limit on the number of fields per record. I can easily see this new system requiring 300 fields(columns). what are the consequences for making a table with so many columns. this table will be updated very frequently - will access time degrade severely even though i use mainly ints in this table? thanks for your help. anna - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
GRANT Privileges
I was just wondering what the "USAGE" privilege is good for and where it would be used? Pauls's book says that USAGE is a special "no privileges" privilege. ___ Scott A. Gerhardt P.Geo. Gerhardt Information Technologies [EMAIL PROTECTED] ___ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Uninstalling and Troubleshooting RPM
Sir, What OS are you running? What version of MySQL are you trying to install? What RPMs are you trying to install? - Scott -Original Message- From: lkeeton [mailto:[EMAIL PROTECTED]] Sent: January 25, 2001 10:56 AM To: [EMAIL PROTECTED] Subject: Uninstalling and Troubleshooting RPM I am very frusturated as of right now. I have a mysql database that doesn't work on Cobalt Raq3. I installed the RPM version and guess what the mysql.sock file isn't there and ther server gives me this error when starting: Starting mysqld daemon with databases from /var/lib/mysql mysqld daemon ended Then it gives me when i connect with command prompt mysql Can't connect can't connect through mysql.sock and it may not exist I am so frusturated now all I want to do is uninstall this rpm and install the source files. The bottom line is that the command rpm -e filename doesn't work it gives me an error filename is not installed. The truth is it is installed and I want it to work. I will be happy for a solution to either to fix this sock problem or uninstall this software all 3 rpm's(client,server, and devel) so I can just install the source tarball. Any suggestions Brent - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: I am failing to optimize this left join ...
Does this help? SELECT ArgumentCalendar.Docket , ArgumentCalendar.Date , DATE_FORMAT(ArgumentCalendar.Date, '%W, %M %e, %Y') AS formatted_date , CaseID.CASEID , CONCAT(Party1, ' v. ', Party2) AS name , Blurb FROM ArgumentCalendar , CaseID , Parties LEFT JOIN Preview ON Parties.CASEID = Preview.CASEID WHERE Preview.CASEID IS NULL AND CaseID.DocketNumber = ArgumentCalendar.Docket AND Parties.CASEID = CaseID.CASEID AND '20010125' = ArgumentCalendar.Date Hi. I have a query which works and is quick, but it misses a couple of records. SELECT ArgumentCalendar.Docket , ArgumentCalendar.Date , CaseID.CASEID , CONCAT(Party1, ' v. ', Party2) AS name , Preview.Blurb FROM ArgumentCalendar , CaseID , Parties , Preview WHERE CaseID.DocketNumber = ArgumentCalendar.Docket AND Parties.CASEID = CaseID.CASEID AND Preview.CASEID = CaseID.CASEID AND '20001001' = ArgumentCalendar.Date AND ArgumentCalendar.Date = '20010630; I needed to _also_ select the records which don't have a corresponding record in Preview, so I threw in a left join: SELECT ArgumentCalendar.Docket , ArgumentCalendar.Date , DATE_FORMAT(ArgumentCalendar.Date, '%W, %M %e, %Y') AS formatted_date , CaseID.CASEID , CONCAT(Party1, ' v. ', Party2) AS name , Blurb FROM ArgumentCalendar , CaseID , Parties LEFT JOIN Preview ON Preview.CASEID = Parties.CASEID WHERE CaseID.DocketNumber = ArgumentCalendar.Docket AND Parties.CASEID = CaseID.CASEID AND '20010125' = ArgumentCalendar.Date The second query works correctly with the left join, but now mysql looks at all 19000 records in Parties (according to EXPLAIN) and the query takes about 15 seconds to execute. I have fiddled and read fiddled more, but I have failed to speed up this query. If I change the order around or add another left join I have removed the problem with the Parties table, but then EXPLAIN says all 19000 CaseID records are being examined. Without the LEFT JOIN MySQL only looks at all the ArgumentCalendar all the Preview records, which are like 63 and 150 respectively. With the Left Join I select 61 records, without it 59 (which is as expected -- the issue is just speed). I am using MySQL 3.22.25. Am I screwed or is there some syntactic SQL point I am missing? - BLH - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Newbie: difference between tinytext and varchar
The answer to your question depends upon depends on the nature of the text information you are going to store: - The length of text you want to store. - Database size and fragmentation considerations. - Uppercase/Lower case significance - Indexing (prior to 3.23). I am trying to determine when it is best to use varchar and when it is appropriate to use tinytext. I have looked at the manual and have read the difference between them but would like to have an understanding of this in more practical, real-life terms. Is a space between characters considered a character in both column types or does one handle it differently? When I use a varchar I have to define its maximum length. I don't have to declare max length in tinytext. does this make a difference when it comes to storage space? Thanks, Karen McAdams = Karen McAdams http://kmcadams.com [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Auctions - Buy the things you want at great prices. http://auctions.yahoo.com/ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Help Pub Crawl display
Your Query is making me thirsty ;-) Unfortunately your tables got garbled so I had to improvise. Next time don't paste the tables beside each other... Also, I'm not sure if I understand your problem or what you are trying to accmplish. Are you trying to de-normalize your data and display the Beggining and Ending Pubs for each stop? - Scott I am trying to do a select that would allow me to display the following: ** UPCOMING PUB CRAWLS ** Event IDBeginning Ending DateHosted By 321 Cubby Bear Harry Carry's 01-27-01Sammy Sosa 198 River Shannon Cubby Bear 02-21-01unassigned 369 John Barleycorn Wrightwood Tap 02-23-01Pamela Anderson My select statement below is not cutting it and I beginning to wonder if what I want to do can be done with a select statement or a join. If it can some help me figure out how. If it can' can someone suggest some other way of going about it. SELECT e.eventid, e.date, e.host_id, p.name h.name FROM event e, pub p, host h, stop s WHERE e.eventid=s.event_id AND s.p_id=p.p_id AND e.host_id=h.host_id - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: mySQL vs Oracle
Hello Ann, The answer to you question depends on how you plan to use the database (i.e. financial trancactions, serving data on the web etc.) as well as financial considerations. MySQL is free and Oracle is expensive. Here are some questions you should answer: 1.) Do you need full Transaction support (commit roll-back)? 2.) Do you need subselect and union queries? 3.) Do you need Triggers and Stored Procedures? 4.) Do you absolutely need Foreign Key support? If you anwered YES to any of the above go with Oracle, Sybase, Frontbase, Openbase etc. otherwise, MySQL is an excellent choice. MySQL is very fast and probably faster than Oracle in most cases but I have no documented proof (Oracle doesn't like having their benchmarks published). I know this isn't a definite answer and you are on a tight deadline. Hope this helps just the same. ___ Scott A. Gerhardt P.Geo. Gerhardt Information Technologies [EMAIL PROTECTED] ___ I am trying to choose between mySQL and Oracle for a Linux server. My specific questions are: 1) Will mySQL handle 3000 hits/day well? 2) Does mySQL handle multi-media file formats? For example, if I want to store audio clips, or Flash movie clips, or PowerPoint presentations, can I do so? We make the decision this decision at 3:00 today. Your advice will be most helpful. Thanks, Ann - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: What degree of concurrency does MySQL support?
As far as hardware goes, you should be able to increase performance with more RAM and faster disks such as UW-160 SCSI. Also, I don't think they make dual processor motherboards for Athalons. - Scott (The total throughput we need is on the order of 100 indexed updates per second; currently we are running a single 900 MHz Athlon with generic IDE disk but would buy more processors if it would help). - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Frontend Dilema
You can connect to the DB on Linux using ODBC over any TCP/IP network, and you don't need to worry about NFS, File sharing, Samba etc. All you need is MySQL on Linux connected to your network and ODBC will connect on port 3306 over TCP/IP, that's all you need. A system built this way can use many different front-ends on different OS's completely independant of the DB. - Scott Thanks for the reply. Curses worked OK. But I was convinced that a web server would be more efficient than NFS for sharing the database files. Is that true? Or is a NFS a longtime viable solution for clients on the LAN quering the database. Richard "Jeremy D. Zawodny" wrote: On Wed, Jan 17, 2001 at 03:17:52PM -0600, Richard Reina wrote: I run a small business. A year and a half ago I embarked on a jorney to port my DOS Foxpro Database to linux. I selected mysql as an the engine and and begand writing the app. using perl/dbi and perlmenu module/curses as the front end at first I used NFS to share the databse files on the LAN. I was soon after convinced by a perl gut to ditch NFS as and use apach/mod_perl and write the front end in HTML. I hired someone to help me and we wrote the first phase and I hate the frontend. I hate having to hit submit after every entry. I hate the way a browser looks and the wait it feels. We're even tried using w3m I still hate it. I'm looking for a NON GRAPHICAL interface taht I guess would work with apache mod-perl. Any suggestions? Does Perl Tk fit this bill? Perl/Tk is for generating GUIs, which you don't want. I don't understand what's wrong with the curses/DBI approach. It should work fine. There's not need for mod_perl and Apache if there is not supposed to be a web interface. Jeremy -- Jeremy D. Zawodny, [EMAIL PROTECTED] Technical Yahoo - Yahoo Finance Desk: (408) 328-7878Fax: (408) 530-5454 Cell: (408) 439-9951 - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: date_format
Hello Cindy, I posted this in response to another date formatting question, hope it helps. The link should be helpful if you haven't found it already. SELECT fields, DATE_FORMAT(datefield, '%M %d, %Y'); I just looked it up myself...It's all in the manual at: http://www.mysql.com/doc/D/a/Date_and_time_functions.html Regards, ___ Scott A. Gerhardt P.Geo. Gerhardt Information Technologies [EMAIL PROTECTED] ___ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Foreign Key Info error in manual
I was reading the information on foreign keys in the manual http://www.mysql.com/doc/e/x/example-Foreign_keys.html and noticed that there is no mention of locking the tables. It seems to me that using the example verbatim could lead to loss of referencial integrity if INSERTS did not occur in sequence (i.e. another person was inserted before shirts). Using "LAST_INSERT_ID()" can only be guranteed to work if the tables are locked. Am I correct or did I miss something? ___ Scott A. Gerhardt P.Geo. Gerhardt Information Technologies [EMAIL PROTECTED] ___ - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
RE: Foreign Key Info error in manual
Thanks for your responses Jeremy, I'm just trying to clarify any misunderstandings I may have. So, as far as the example goes, the relationships between shirts and people is maintained by using the LAST_INSERT_ID (in one connection) but referential integrity is not maintained in terms of foriegn keys for subsequent deletes and updates since MySQL does not support them. Thus all subsequent deletes and updates etc. must use explicit joins or reference by primary key. ___ Scott A. Gerhardt P.Geo. Gerhardt Information Technologies [EMAIL PROTECTED] ___ So referential integrity is maintained but AUTO_INCREMENT values may not be chronological? Nope. Referential integrity is not maintained. Jeremy -- Jeremy D. Zawodny, [EMAIL PROTECTED] Technical Yahoo - Yahoo Finance Desk: (408) 328-7878Fax: (408) 530-5454 Cell: (408) 439-9951 - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
