Hello Steve,
> Ok, I'm a little new a this, so be gentle!! :)
>
> I was looking into the InnoDB engine for some tables I have, and would
like
> to use the PK/FK on some of the data.
>
> It appears that the PK/FK is mainly used for updating/deleting data,
> correct? I can't use it to retreive data
Ok, I'm a little new a this, so be gentle!! :)
I was looking into the InnoDB engine for some tables I have, and would like
to use the PK/FK on some of the data.
It appears that the PK/FK is mainly used for updating/deleting data,
correct? I can't use it to retreive data from multiple tables
Hello,
A bit embarrassed, I have been away from the databasing side of system
development for quite a while so am a little rusty. This seems like a simple
issue.
I have a USER table:
userID
fName
lName
address
address2
city
province
country
referrerID
userID is the unique pr
At 10:19 PM -0500 6/22/07, Chris W wrote:
when you get a duplicate key error it says something to the effect
of "Duplicate entry 'xyz' for key x"
What I want to know is how to find out what table fields are part of key x?
'show index' is what you want, I think:
http://dev.mysql.com/doc/refma
mos wrote:
Chris,
You probably want to know the specific table, so I wonder if it
shows up in the MySQL error logs? Of course you can dump the database
structure and look for key "x" by doing:
mysqldump --no-data --skip-opt --skip-comments --compact
and redirect it out to a text file. Ho
At 09:19 PM 6/22/2007, you wrote:
when you get a duplicate key error it says something to the effect of
"Duplicate entry 'xyz' for key x"
What I want to know is how to find out what table fields are part of key x?
--
Chris,
You probably want to know the specific table, so I wonder if it s
This is somewhat related to my last question RE conflicting procedure
argument names, but in regards to multi-row inserts...
suppose the following procedure:
DROP PROCEDURE IF EXISTS sp_ImportedUpdate |
CREATE PROCEDURE sp_ImportedUpdate ()
DETERMINISTIC CONTAINS SQL MODIFIES SQL DATA
BEGI
eld itself.
Regards,
Mikhail Berman
-Original Message-
From: Michael Stassen [mailto:[EMAIL PROTECTED]
Sent: Friday, November 18, 2005 12:11 PM
To: Mikhail Berman
Cc: Jeremy Cole; Jasper Bryant-Greene; mysql@lists.mysql.com
Subject: Re: A "key" question
Mikhail Berman wrote:
, November 18, 2005 12:11 PM
To: Mikhail Berman
Cc: Jeremy Cole; Jasper Bryant-Greene; mysql@lists.mysql.com
Subject: Re: A "key" question
Mikhail Berman wrote:
> Dear Jeremy,
>
> Thank you for your help.
>
> I do have an exact situation you have assume I have. Here
Mikhail Berman wrote:
Hi Jeremy,
This is still "work in progress" but here are some samples of queries we
will be running, that involved this table and this date field:
==
#this fails -- join on is horrible
What do you mean by "fails"? Takes too long
Mikhail Berman wrote:
Dear Jeremy,
Thank you for your help.
I do have an exact situation you have assume I have. Here is the output
of SHOW CREATE TABLE
CREATE TABLE `TICKER_HISTORY_PRICE_DATA` (
`price_data_ticker` char(8) NOT NULL default '',
`price_data_date` date NOT NULL default '00
.mysql.com
Subject: Re: A "key" question
Hi Mikhail,
> Thank you for your help.
>
> I do have an exact situation you have assume I have. Here is the
> output of SHOW CREATE TABLE
>
> `price_data_ticker` char(8) NOT NULL default '',
> `price_data_d
Hi Mikhail,
Thank you for your help.
I do have an exact situation you have assume I have. Here is the output
of SHOW CREATE TABLE
`price_data_ticker` char(8) NOT NULL default '',
`price_data_date` date NOT NULL default '-00-00',
...
UNIQUE KEY `tidadx` (`price_data_ticker`,`pric
+
180 rows in set (0.00 sec)
Mikhail Berman
-Original Message-
From: Jeremy Cole [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 17, 2005 5:23 PM
To: Mikhail Berman
Cc: Jasper Bryant-Greene; mysql@lists.mysql.com
Subject: Re: A "k
Hi Mikhail,
I may not have been precise in my question, but the Unique Index in
question is a two fields index, and I was looking to find out wisdom
from the List if there is sense and/or experience in keying second(left)
field on in the Unique Index to speed up a search.
If you have a UNIQUE(
Mikhail,
>Is it possible or makes sense to key a field that is a part of
Unique
>Index already?
MySQL won't stop you, but it's a waste of space & cpu cycles unless
there's a high-priority query performance need for it.
PB
-
Mikhail Berman wrote:
Hello everyone,
Is it possible or
bother the List without a good reason and doing what you
said before
Regards,
Mikhail Berman
-Original Message-
From: Jasper Bryant-Greene [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 17, 2005 4:19 PM
To: Mikhail Berman
Cc: mysql@lists.mysql.com
Subject: Re: A "key" ques
Mikhail Berman wrote:
Is it possible or makes sense to key a field that is a part of Unique
Index already?
It's possible, but it doesn't make sense. A unique index is a normal
index with an added unique constraint. Adding another index on the same
field would make no sense (unless the field
Hello everyone,
Is it possible or makes sense to key a field that is a part of Unique
Index already?
Regards and thank you
Mikhail Berman
0400
From: "Haisam K. Ido" <[EMAIL PROTECTED]>
To: mysql@lists.mysql.com
Subject: Primary Key question
I've created the following table (server 4.1 in win2k)
CREATE TABLE `os` (
`id` tinyint(10) NOT NULL auto_increment,
`name` varchar(255) NOT NULL default '',
"Haisam K. Ido" <[EMAIL PROTECTED]> wrote on 01/07/2005 15:04:01:
>
> I've created the following table (server 4.1 in win2k)
>
> CREATE TABLE `os` (
>`id` tinyint(10) NOT NULL auto_increment,
>`name` varchar(255) NOT NULL default '',
>`description` varchar(255) default NULL,
>PRI
I've created the following table (server 4.1 in win2k)
CREATE TABLE `os` (
`id` tinyint(10) NOT NULL auto_increment,
`name` varchar(255) NOT NULL default '',
`description` varchar(255) default NULL,
PRIMARY KEY (`id`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
and was very surprised
Hendro,
In SQL an empty string is not null.
PB
Hendro Suryawan wrote:
Hi all,
I have table with primary key on field PO,BrgId, NOSP but when i try
insert several new reccord with field NOSP = '', mysql will accept the
new reccord without complaint error.
Is this normal behavior? My perception
Hendro Suryawan <[EMAIL PROTECTED]> wrote on 06/16/2005 06:53:31 PM:
> Hi all,
> I have table with primary key on field PO,BrgId, NOSP but when i try
> insert several new reccord with field NOSP = '', mysql will accept the
> new reccord without complaint error.
> Is this normal behavior?
As long
Hi all,
I have table with primary key on field PO,BrgId, NOSP but when i try
insert several new reccord with field NOSP = '', mysql will accept the
new reccord without complaint error.
Is this normal behavior? My perception if i have primary key on the
three field the three field must be not empty
Howdy all,
Quick question about foreign keys. If I have a
database with foreign keys setup, then drop one of the
tables (which is referenced by many of the others) and
re-add the table, will the existing FKs work?
I'm seeing errors in SHOW INNODB STATUS under the
LATEST FOREIGN KEY ERRORS section
Good morning.
I have a table with field name DATA type tinytext. The table is already
populated. I need DATA to be unique. It seems that MySQL doesn't look at
the uniqueness of a field in a binary fashion.
Example (chosen because I think it is just plain odd)
june = Júne
If I query as -
Select
BINARY is for CHAR and VARCHAR, but he's using TINYTEXT. The binary version
of TINYTEXT is TINYBLOB.
Michael
mos wrote:
Paul,
Just use the "Binary" column attribute to make it case sensitive..
From MySQL Manual: http://dev.mysql.com/doc/mysql/en/CHAR.html
As of MySQL 4.1, values in CHAR
--- Randy Clamons <[EMAIL PROTECTED]> wrote:
"Primary key names start with pk_, unique indexes
start with uk_, other indexes start wiht ix_."
That's a good tip. What if just named the primary key
pk and the foreign key fk. Would you run into trouble
if you're working with two or three tables, and
olumn as a PK.
Cheers,
Matt
> -Original Message-
> From: Jeremy Zawodny [mailto:[EMAIL PROTECTED]
> Sent: 23 April 2004 23:51
> To: Emmett Bishop
> Cc: [EMAIL PROTECTED]
> Subject: Re: Compound Primary Key question
>
> On Fri, Apr 23, 2004 at 03:40:43PM -0700, E
On Fri, Apr 23, 2004 at 03:40:43PM -0700, Emmett Bishop wrote:
> Quick question. In general, is it better to create
> compound primary keys or use an auto increment field
> to uniquely identify each record?
Yes.
It depends on your application and your data.
Jeremy
--
Jeremy D. Zawodny | Pe
Quick question. In general, is it better to create
compound primary keys or use an auto increment field
to uniquely identify each record?
--T
__
Do you Yahoo!?
Yahoo! Photos: High-quality 4x6 digital prints for 25¢
http://photos.yahoo.c
On Tue, 17 Dec 2002 19:15:08 +0100, Serrand Patrice wrote:
>Does MySQL automatically create index on primary key ?
Yes. See http://www.mysql.com/doc/en/CREATE_TABLE.html
- Steve Yates
- Antonym: The opposite of the word you're searching for.
~ Taglines by Taglinator - www.srtware.com ~
---
Hi,
Does MySQL automatically create index on primary key ?
If not how can I create an index on a primary key ?
Thanks for any help.
Patrice Serrand
-
Before posting, please check:
http://www.mysql.com/manual.php (the manu
On Monday 16 December 2002 18:12, tmb wrote:
> I understood that MySQL didn't internally keep up with
> the relationships between tables... like MS Access...
>
> And that it was up to the programmer to referential
> integrity...
>
> But I noticed in phpMyAdmin that the offer the option
> of definin
I understood that MySQL didn't internally keep up with
the relationships between tables... like MS Access...
And that it was up to the programmer to referential
integrity...
But I noticed in phpMyAdmin that the offer the option
of defining a column in a table as 'Primary'
Am I confused on this
uld be great if you'd post it
> to
> the mysql list.
>
> Carl McNamee
> Systems Administrator
> Billing Concepts
> (210) 949-7282
>
> -----Original Message-
> From: Erick Papadakis [mailto:[EMAIL PROTECTED]]
> Sent: Monday, July 08, 2002 6:30 AM
> To:
* Erick Papadakis
> i need to set up an auto_increment field inside mysql. for various
> reasons, the maximum size is 3.
Could you say something about these reasons...?
> but i don't want this to be ONLY integers
> because that limits me until 999 numbers only.
Well... using three _bytes_, the
n .
- Original Message -
From: "Erick Papadakis" <[EMAIL PROTECTED]>
To: "mysql" <[EMAIL PROTECTED]>
Sent: Monday, July 08, 2002 2:30 PM
Subject: mysql primary key question!
> hello,
>
> i hope some database guru can help me with this!
>
>
t e-mail address : [EMAIL PROTECTED]
[EMAIL PROTECTED]
- Original Message -
From: "Erick Papadakis" <[EMAIL PROTECTED]>
To: "mysql" <[EMAIL PROTECTED]>
Sent: Monday, July 08, 2002 2:30 PM
Subject: mysql primary key question!
> hello,
>
&
hello,
i hope some database guru can help me with this!
i need to set up an auto_increment field inside mysql. for various
reasons, the maximum size is 3. but i don't want this to be ONLY integers
because that limits me until 999 numbers only. since i have all
flexibility for these three digi
I am using MySql-3.23.51. Even though this version
doesn't support foreign keys, the foreign key
declarations can be entered without getting an error
message. I would like to write CREATE TABLE
statements that include foreign key declarations that
would be compatible with future releases that wi
On Wed, Oct 31, 2001 at 10:49:12PM +, Federico Schwindt wrote:
>
> thanks for the reply. it seems to be clear now.
>
> > MySQL Doesn't allow you to specifiy which index to use - it chooses
> > (sometimes badly) whether or not to use one.
>
> From documentation:
>
> As of MySQL Versi
Rick Emery wrote:
>
> First: I believe this is not legal (looking at myySQL manual p 6.5.3):
> PRIMARY KEY (key1), KEY (key2)
> You may use one or the other.
yup, it does work here, ver 3.23.42.
> Second: You may search by either owner_id or customer_id without creating an
> index.
> Such as
thanks for the reply. it seems to be clear now.
> MySQL Doesn't allow you to specifiy which index to use - it chooses
> (sometimes badly) whether or not to use one.
From documentation:
As of MySQL Version 3.23.12, you can give hints about which index
MySQL should use when retrieving i
Federico Schwindt wrote:
> hi,
>
> i'm not sure if this belongs here, but i cannot seem to find the
> answer anywhere else.
> first, what's the difference between:
>
> PRIMARY KEY (key1, key2)
> PRIMARY KEY (key1), KEY (key2)
The first line creates a single, unique key on the columns key
badly) whether or not to use one.
Hope this helps.
Quentin
-Original Message-
From: Federico Schwindt [mailto:[EMAIL PROTECTED]]
Sent: Thursday, 1 November 2001 10:57 a.m.
To: [EMAIL PROTECTED]
Subject: key question
hi,
i'm not sure if this belongs here, but i cannot seem to find
At 9:57 PM + 10/31/01, Federico Schwindt wrote:
>hi,
>
> i'm not sure if this belongs here, but i cannot seem to find the
>answer anywhere else.
> first, what's the difference between:
>
> PRIMARY KEY (key1, key2)
This creates an index within which pairs of key1/key2 values are unique.
-
From: Federico Schwindt [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, October 31, 2001 3:57 PM
To: [EMAIL PROTECTED]
Subject: key question
hi,
i'm not sure if this belongs here, but i cannot seem to find the
answer anywhere else.
first, what's the difference between:
PRIMARY KEY (
hi,
i'm not sure if this belongs here, but i cannot seem to find the
answer anywhere else.
first, what's the difference between:
PRIMARY KEY (key1, key2)
PRIMARY KEY (key1), KEY (key2)
second, let's suppose the following table:
owner_id int(11),
customer_id int(11),
customer_in
On Sat, Feb 17, 2001 at 12:07:53PM +0100, Cedric Lefebvre wrote:
> I have written the following SQL request, but I get
> an error, why ?
>
> create table MovementOrder (
> teamCode INT(4) NOT NULL,
> quarter INT(4) NOT NULL,
> position INT(4) NOT NULL,
> priority INT(4) NOT NULL,
> orde
-
From: "Cedric Lefebvre" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, February 17, 2001 2:07 PM
Subject: SQL PRIMARY KEY question
> I have written the following SQL request, but I get
> an error, why ?
>
> create table MovementOrder (
> t
I have written the following SQL request, but I get
an error, why ?
create table MovementOrder (
teamCode INT(4) NOT NULL,
quarter INT(4) NOT NULL,
position INT(4) NOT NULL,
priority INT(4) NOT NULL,
order VARCHAR(10),
parameter VARCHAR(5),
PRIMARY KEY(teamCode,quarter,position,prio
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