Deepak Vishwanathan [EMAIL PROTECTED] wrote:
I have a table named t1 with a column x1 which is the primary key for
that table. There are some other tables that reference this table t1 on
x1 with foreign key constraints.
I wanted to rename the column x1 for some reason, so, I went ahead
Hi,
I have a table named t1 with a column x1 which is the primary key for
that table. There are some other tables that reference this table t1 on
x1 with foreign key constraints.
I wanted to rename the column x1 for some reason, so, I went ahead and
renamed the column x1 to y1. I was able
one of the foreign keys between the 2 tables
ALTER TABLE jpox.USERDETAILS ADD CONSTRAINT USERDETAILS_FK1 FOREIGN KEY
(USER_USER_ID_OID) REFERENCES jpox.`USER` (USER_ID)
MySQL (4.0.15) responds with
ERROR 1005: Can't create table './jpox/#sql-5b3_5a.frm' (errno: 150)
This works with 4.0.18, yet
)
This all works fine.
I then try to create one of the foreign keys between the 2 tables
ALTER TABLE jpox.USERDETAILS ADD CONSTRAINT USERDETAILS_FK1 FOREIGN KEY
(USER_USER_ID_OID) REFERENCES jpox.`USER` (USER_ID)
MySQL (4.0.15) responds with
ERROR 1005: Can't create table './jpox
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Victoria=20
That seemed to work well, thank you.
However, I received another error that I am not sure how to troubleshoot =
during the restore:
ERROR 1114 at line 83 in file: =
'/bb/bin/mysql/backups/archive_4320.sql': The table
this might be a version issue, so I copied all the database files to another
location, and started it using v4.0.18. I then dropped the foreign key constraint (no
errors) and recreated it (no errors). I backed up the database. And when I went to
restore it, I got the same error.
The schema [after
Hi,
Are you creating them in the correct order ?
object_type must exist before you can create cur_reject_tk_sum otherwise the
foreign key will give errors.
Marvin
-Original Message-
From: Tucker, Gabriel [mailto:[EMAIL PROTECTED]
Sent: 04 May 2004 14:46
To: Mysql General (E-mail
Marvin
I believe that is the problem with the restore. When I create the archive file using
the mysqldump command and options previously listed, I get the create table in the
order listed below and thus, the foreign key constraint is created on table
cur_reject_tk_sum before the object_type
Hi,
I don't think mysqldump takes foreign key constraints into account when
dumping them.
You could specify the tables that you want when you dump so you get the
correct order.
e.g.
mysqldump --allow-keywords --host=$HOST --flush-logs --disable-keys --opt
--port=$1 --socket=/bb/bin/mysql
On Tue, 4 May 2004 09:46:27 -0400
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Hello All:
I am having a problem with both V4.0.16 and 4.0.18. Let me explain:
I have a database with two InnoDB tables in v4.0.16. I backup up
this database every night using the following command:
Hi Guy's,
first: Your are correct it is contraints:
bash-2.05a$ perror 150
Error code 150: Unknown error: 150
150 = Foreign key constraint is incorrectly formed
Second you could also try:
set foreign_key_check=0;
at the beginning of the restore file.
set foreign_key_check=1;
at the end
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Marvin
I believe that is the problem with the restore. When I create the =
archive file using the mysqldump command and options previously listed, =
I get the create table in the order listed below and thus, the foreign =
key constraint is created
, 2004 10:03 AM
To: Tucker, Gabriel
Subject: Re: InnoDB - Foreign Key - Error 150.
Put in your script:
set foreign_key_checks=0;
in the first line.
mysqldump dumps tables in alphabetical order.
Tucker, Gabriel wrote:
Hello All:
I am having a problem with both V4.0.16 and 4.0.18. Let me
To: [EMAIL PROTECTED]
Subject: Re: InnoDB - Foreign Key - Error 150.
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Marvin
I believe that is the problem with the restore. When I create the =
archive file using the mysqldump command and options previously listed, =
I get the create table in the order
On Tue, 4 May 2004 11:01:59 -0400
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Luciano
I am confused... As far as I can tell, the set
foreign_key_checks=0; is used with the load data infile command.
Actually, I think that it is used for all operations on the DBMS, not just load data
infile,
- Gabe
-Original Message-
From: Victoria Reznichenko [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 04, 2004 10:35 AM
To: [EMAIL PROTECTED]
Subject: Re: InnoDB - Foreign Key - Error 150.
Tucker, Gabriel [EMAIL PROTECTED] wrote:
Marvin
I believe that is the problem with the restore. When
: InnoDB - Foreign Key - Error 150.
Victoria
That seemed to work well, thank you.
However, I received another error that I am not sure how to troubleshoot during the
restore:
ERROR 1114 at line 83 in file: '/bb/bin/mysql/backups/archive_4320.sql': The
table 'cur_reject_tk_sum' is full
command, believing this would correct the problem. Do you know why it does not?
No, the foreign key error is generated because mysqldump dumps table in
a different order (alphabetical) that it should.
I know I asked a bunch of questions, thanks for whatever you can offer!
Gabe
--
MySQL General
I creates 2 tables
create table test1(Ser int(5) primary key,age int(2)) type=InnoDB;
create table test2(Serno int(5) references test1(Ser),name varchar(20))
type=InnoDB;
I inserted a value in test2 and it accepted. Isnt that wrong? shouldnt it
accept only if there is a vlue in the first
Try creating your tables as such:
CREATE TABLE test1(ser INT(5) NOT NULL,
age INT(2),
PRIMARY KEY (ser) )
TYPE=InnoDB;
CREATE TABLE test1(serno INT(5) NOT NULL,
name VARCHAR(20),
KEY 'idx_serno' (serno),
CONSTRAINT FOREIGN KEY(serno) REFERENCES `test1` (ser) )
TYPE=InnoDB;
-Original
Massimo Petrini [EMAIL PROTECTED] wrote:
Somebody can help me ? If you run the above code in a new db named prova,
the last line create then error
Can't create table '.\prova\#sql-654_2e.frm' (errno: 121)
If you run the code on 4.0.17 all it is ok.
Thank you for report! Entered to the
CREATE INDEX ArtOper ON schedelavoro (Articolo, Operazione)
CREATE INDEX IDUSL ON schedelavoro (IDUSL)
CREATE UNIQUE INDEX UbicazioneSL ON TabUbicazioneSL (UbicazioneSL)
CREATE INDEX SchedaLavoro ON RevisioniSL (SchedaLavoro)
ALTER TABLE RevisioniSL ADD CONSTRAINT FOREIGN KEY (SchedaLavoro) REFERENCES
Take the following InnoDB table in MySQL 4.1.1-alpha:
create table tt1 (
r1 int(10),
key (r1),
constraint r1 foreign key (r1) references pfwuser(usrid)
) type=InnoDB;
If I try to change the column type like this:
alter table tt1 modify r1 varchar(255);
I get an error:
mysql alter table
Description:
The current mysqldump utility does an alphabetical dump of the
tables as well as a row by row dump of the data following each
table declaration. This is adequate enough for most
databases; however, if there are strict foreign key
constraints
}/${database_filename} 2 $logfile
}
I would suggest that this can be included as a mysqldump option (--nochecks
or similar).
Carlos
Original Message Follows
From: Stephen Cuppett [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: MySQL Dump Command Does Not Consider Foreign Key Dependencies
Date: Fri
Stephen,
in = 4.0, you should put
SET FOREIGN_KEY_CHECKS=0;
at the start of the dump file.
In 4.1, mysqldump knows to add to a dump file a line
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS,
FOREIGN_KEY_CHECKS=0*/
to disable foreign key checks in the dump file.
Best regards
So I have made a table called 'uid' where on uid is the only field in
the table. Then I make another table called 'users' where there are two
fields, 'uid1' and 'uid2' and both uid values have foreign key
constraints referencing the 'uid' field in the uid table.
No problem, tables are created
called 'users' where there are
two fields, 'uid1' and 'uid2' and both uid values have foreign key
constraints referencing the 'uid' field in the uid table.
No problem, tables are created and are all empty.
Then I try inserting a uid varchar value of 'test' into the uid
table...
ok works
had issues when importing data from a dump so
i've had to do a FORIEGN_KEY_CHECKS=0
So I have made a table called 'uid' where on uid is the only field in
the table. Then I make another table called 'users' where there are
two fields, 'uid1' and 'uid2' and both uid values have foreign key
=
not quite understanding the syntax.
I am creating two test tables to work out the logic. What I want to do =
is delete a certain 'ID' from 'table 'ONE' and have it delete the same =
foreign key id of the same value in table 'TWO'.
Here is what I have entered into the mysql command.
mysql create
creating two test tables to work out the logic. What I want to do is delete a
certain 'ID' from 'table 'ONE' and have it delete the same foreign key id of the same
value in table 'TWO'.
Here is what I have entered into the mysql command.
mysql create table one (id varchar(2) not null, name varchar(20
. That will
alleviate this problem. The current limit 255 bytes is rather short.
I may also improve the foreign key check algorithm so that it can work also
on column prefix indexes.
http://www.mysql.com/doc/en/Charset-Unicode.html :
The UTF8 character set (transform Unicode representation) is an alternative
-Original Message-
From: Heikki Tuuri [mailto:[EMAIL PROTECTED]
Sent: Dienstag, 10. Februar 2004 14:19
To: [EMAIL PROTECTED]
Subject: Re: Foreign Key Reference to a VARCHAR
Sven,
are you using the UTF8 charset? Then a single character may
use up to 3 bytes. Since MySQL cannot work
languages on Earth.
Thank you,
Heikki
- Alkuperäinen viesti -
Lähettäjä: Sven Woltmann [EMAIL PROTECTED]
Vastaanottaja: Heikki Tuuri [EMAIL PROTECTED];
[EMAIL PROTECTED]
Lähetetty: Tuesday, February 10, 2004 3:53 PM
Aihe: RE: Foreign Key Reference to a VARCHAR
Heikki,
yes, actually I use
Heikki Tuuri wrote:
I guess that 4-byte UTF8 characters are not needed. You can code 16 million
characters with 3 bytes.
Yes. But is that also the case if you use the UTF-8 encoding
scheme, or can that scheme code less characters with 3 bytes?
http://ln.hixie.ch/?start=1064324988order=-1count=1
-Original Message-
From: Jochem van Dieten [mailto:[EMAIL PROTECTED]
Sent: Dienstag, 10. Februar 2004 15:29
To: Heikki Tuuri
Cc: [EMAIL PROTECTED]
Subject: Re: Foreign Key Reference to a VARCHAR
Heikki Tuuri wrote:
I guess that 4-byte UTF8 characters are not needed. You can code 16
Hi,
I hope this is not a well known problem since I just signed up to this list. But I
checked the February archive and couldn't find anything on this.
I was trying for a couple of hours now to create a foreign key reference on a varchar
field:
CREATE TABLE users
(
login
Philip,
- Original Message -
From: Philip Walden [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Monday, February 02, 2004 3:39 AM
Subject: Why does MySQL generate internal foreign key id when constrain name
I am using MySQL 4.1.1-1.
When I add a named foreign key
I am using MySQL 4.1.1-1.
When I add a named foreign key constraint
alter table sb_query_nm_sub_tp
add constraint f1sbquerynmsubtp foreign key (query_nm) references
sb_query_class (query_nm);
And then do a show create table:
| sb_query_nm_sub_tp | CREATE TABLE `sb_query_nm_sub_tp
Victoria Reznichenko wrote:
Andrew DeFaria [EMAIL PROTECTED] wrote:
Victoria Reznichenko wrote:
Andrew DeFaria [EMAIL PROTECTED] wrote:
As you can see I when I delete from user (the parent table) the
useropts (child table) entry remains. Shouldn't it be deleted?
Heikki Tuuri asked me to look
Andrew DeFaria [EMAIL PROTECTED] wrote:
Victoria Reznichenko wrote:
Andrew DeFaria [EMAIL PROTECTED] wrote:
As you can see I when I delete from user (the parent table) the
useropts (child table) entry remains. Shouldn't it be deleted?
Heikki Tuuri asked me to look at my innodb variables
in
the child table whose foreign key values are equal to the referenced
key value in the parent row.
However:
drop database if exists MYDB;
create database MYDB;
use MYDB;
create table user (
userid varchar (8) not null,
name tinytextnot null,
primary key (userid)
) type=innodb
those rows in
the child table whose foreign key values are equal to the referenced
key value in the parent row.
However:
drop database if exists MYDB;
create database MYDB;
use MYDB;
create table user (
userid varchar (8) not null,
name tinytext not null,
primary key (userid
I created the following
.sql file to demonstrate a problem I'm having.
According to the manual:
If ON DELETE CASCADE is
specified, and a row in the parent table is deleted, then InnoDB
automatically deletes also all those rows in the child table
whose foreign key values are equal
,
- valuevarchar (128),
- key user_index (userid),
- foreign key (userid) references user (userid) on delete cascade
- ) type=innodb; -- useropts
Query OK, 0 rows affected (0.01 sec)
mysql insert into user values (userA, User A);
Query OK, 1 row affected (0.00 sec
on mysql 4.0.14-standard (x86 Linux) when I try the following:
alter table child_table
add ( foreign key (column1, column2)
references parent_table
on delete cascade)
;
on an existing innodb table I get:
ERROR 1005: Can't create table './dbname/#sql-70f5_b92.frm' (errno: 150)
I know
On 5 Jan 2004, at 21:10, Sid Lane wrote:
on mysql 4.0.14-standard (x86 Linux) when I try the following:
alter table child_table
add ( foreign key (column1, column2)
references parent_table
on delete cascade)
;
on an existing innodb table I get:
ERROR 1005: Can't create table './dbname/#sql
How does one drop a foreign key from a InnoDB table in mySQL 4.1.x?
The manual says
ALTER TABLE yourtablename DROP FOREIGN KEY
internally_generated_foreign_key_id
You have to use SHOW CREATE TABLE to determine the internally generated
foreign key ID when you want to drop a foreign key
Berra
---
-Original Message-
From: Joshua Thomas [mailto:[EMAIL PROTECTED]
Sent: Sunday, January 04, 2004 12:33 AM
To: '[EMAIL PROTECTED]'
Subject: Dropping a foreign key in 4.1.x
How does one drop a foreign key from a InnoDB table in mySQL 4.1.x?
The manual says
ALTER TABLE
,
- FrequencyCap MEDIUMINT UNSIGNED NOT NULL,
- INDEX (UserID),
- FOREIGN KEY (UserID) REFERENCES Userlist(UserID) ON
UPDATE CASCADE ON DELETE CASCADE,
- PRIMARY KEY (SiteID, UserID)
- ) TYPE=InnoDB;
Query OK, 0 rows affected (0.05 sec)
mysql CREATE TABLE
UNSIGNED NOT NULL DEFAULT 70,
- FrequencyCap MEDIUMINT UNSIGNED NOT NULL,
- INDEX (UserID),
- FOREIGN KEY (UserID) REFERENCES Userlist(UserID) ON
UPDATE CASCADE ON DELETE CASCADE,
- PRIMARY KEY (SiteID, UserID)
- ) TYPE=InnoDB;
Query OK, 0 rows affected (0.05
,
- MonthlyUnique INT UNSIGNED NOT NULL DEFAULT 70,
- FrequencyCap MEDIUMINT UNSIGNED NOT NULL,
- INDEX (UserID),
- FOREIGN KEY (UserID) REFERENCES Userlist(UserID) ON
UPDATE CASCADE ON DELETE CASCADE,
- PRIMARY KEY (SiteID, UserID)
- ) TYPE=InnoDB;
Query
Batara,
thank you for the bug report. I have to fix this bug when I overhaul the
foreign key constraint naming conventions.
Yes, to fix the problem you can drop the foreign key constraint manually in
the slave.
Best regards,
Heikki Tuuri
Innobase Oy
http://www.innodb.com
Foreign keys
Hi,
I am running a master and a slave. When I created a foreign key in
master, it looked like this:
CONSTRAINT `0_373` FOREIGN KEY (`prefecture_id`) REFERENCES `prefecture`
(`id`)
But on the slave it was like:
CONSTRAINT `0_451` FOREIGN KEY (`prefecture_id`) REFERENCES `prefecture`
(`id
- Original Message -
From: Shravan Durvasula [EMAIL PROTECTED]
To: MySQL HELP [EMAIL PROTECTED]
Sent: Tuesday, November 11, 2003 12:48 PM
Subject: Foreign Key
Hi all:
I have a table A(Id, Type). Primary Key is Id
I have another table B(Id, State). Primary Key is Id
I also have
,
PRIMARY KEY (softwareID)
) TYPE=INNODB;
CREATE TABLE software_machineOSs (
softwareID CHAR(20) NOT NULL,
id INT(2) unsigned zerofill NOT NULL auto_increment,
osName CHAR(20),
osRevision CHAR(20),
INDEX (softwareID),
FOREIGN KEY (softwareID
Vinita,
it is most probably this bug fixed in 4.1.14:
Fixed a bug: if in a FOREIGN KEY with an UPDATE CASCADE clause the parent
column was of a different internal storage length than the child column,
then a cascaded update would make the column length wrong in the child table
and corrupt
),
FOREIGN KEY (softwareID) REFERENCES software (softwareID) ON
DELETE CASCADE ON UPDATE CASCADE,
PRIMARY KEY (softwareID, osName)
) TYPE=INNODB;
insert into software
(softwareID,softwareName,softwareVers,installedDate,softwareSource)
values (vim-1.1, vim, 1.1, NOW(), www.test.com.au
Description:
It is possible to get into a situation where foreign key constraints
on a replication slave have different labels to the same foreign key
constraint on the master. This normally causes replication to fail when
a drop of a foreign key on the master is attempted (although
Here is the script that creates the database.
create table object_attrib (obj_record_id INTEGER(7) AUTO_INCREMENT NOT
NULL,
PRIMARY KEY (obj_record_id),
INDEX (rel_obj_int_id),
FOREIGN KEY (rel_obj_int_id)
REFERENCES obj_id_internals (obj_int_id)
ON DELETE RESTRICT
At 18:22 + 10/8/03, Croniser Brian Contr AFRL/IFGB wrote:
Here is the script that creates the database.
create table object_attrib (obj_record_id INTEGER(7) AUTO_INCREMENT NOT
NULL,
PRIMARY KEY (obj_record_id),
INDEX (rel_obj_int_id),
FOREIGN KEY (rel_obj_int_id
Hi, sorry for my english, but, how can I do relationships between
tables? Is possible?
Thanks, Paulo Daniel
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
* Paulo
Hi, sorry for my english, but, how can I do relationships between
tables? Is possible?
This is done using different types of JOIN:
URL: http://www.mysql.com/doc/en/JOIN.html
--
Roger
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe:
`,`phenotype`),
KEY `id` (`id`),
CONSTRAINT `0_125` FOREIGN KEY (`id`)
REFERENCES
`monogenic` (`phenotype_ID`) ON DELETE
CASCADE,
CONSTRAINT `0_127` FOREIGN KEY (`id`)
REFERENCES
`knockout` (`phenotype_ID`) ON DELETE
CASCADE
) TYPE=InnoDB
The problem is that I can't insert
4.6.1 of the 4.1 manual. I appreciate any and
all help. For now, I am having to disable foreign key
integrity constraint checking.
Ed
--- Victoria Reznichenko
[EMAIL PROTECTED] wrote:
Ed Smith [EMAIL PROTECTED] wrote:
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
At 15:59 +0300 9/28/03, Victoria Reznichenko wrote:
Ed Smith [EMAIL PROTECTED] wrote:
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
ERROR 1216: Cannot add or update a child row: a
foreign key constraint fails
It is, of course, choking on the enroll row insert.
Why
, and row level locking for MySQL
InnoDB Hot Backup - a hot backup tool for MySQL
- Original Message -
From: Paul DuBois [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Tuesday, September 30, 2003 1:31 AM
Subject: Re: FOREIGN KEY Weirdness in mySQL 4.1 with VARCHAR
At 15:59
Ed Smith [EMAIL PROTECTED] wrote:
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
ERROR 1216: Cannot add or update a child row: a
foreign key constraint fails
It is, of course, choking on the enroll row insert.
Why is this happening? Here are some things that make
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
ERROR 1216: Cannot add or update a child row: a
foreign key constraint fails
It is, of course, choking on the enroll row insert.
Why is this happening? Here are some things that make
the problem go away:
1. Take out the name
` FOREIGN KEY (`id`) REFERENCES
`monogenic` (`phenotype_ID`) ON DELETE CASCADE,
CONSTRAINT `0_127` FOREIGN KEY (`id`) REFERENCES
`knockout` (`phenotype_ID`) ON DELETE CASCADE
) TYPE=InnoDB
The problem is that I can't insert a record into this
table unless the value of 'id' is present in both
it work.
Other suggestions?
Thanks.
--- Harald Fuchs [EMAIL PROTECTED] wrote:
In article
[EMAIL PROTECTED],
Ed Smith [EMAIL PROTECTED] writes:
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
ERROR 1216: Cannot add or update a child row: a
foreign key constraint fails
# [EMAIL PROTECTED] / 2003-09-26 15:12:03 -0700:
--- Harald Fuchs [EMAIL PROTECTED] wrote:
Ed Smith [EMAIL PROTECTED] writes:
Greetings. When I execute the SQL script below in
mySQL 4.1, I get
ERROR 1216: Cannot add or update a child row: a foreign key
constraint fails
Hi,
- Original Message -
From: Roman Neuhauser
Sent: Friday, September 26, 2003 6:05 PM
Subject: Re: FOREIGN KEY Weirdness in mySQL 4.1 with VARCHAR
# [EMAIL PROTECTED] / 2003-09-26 15:12:03 -0700:
--- Harald Fuchs [EMAIL PROTECTED] wrote:
Ed Smith [EMAIL PROTECTED] writes
Hi,
I have three tables. One of the tables has a column that
is a foreign key that references columns from the other
two tables. This table is shown below.
CREATE TABLE `pheno` (
`id` smallint(5) unsigned NOT NULL auto_increment,
`relevant` enum('y','n') default NULL,
`phenotype
',
`pop` varchar(200) default NULL,
`mut_type` varchar(50) default NULL,
`mut_loc` varchar(50) default NULL,
`gene_ID` smallint(5) unsigned NOT NULL default '0',
PRIMARY KEY (`id`,`gene_ID`),
KEY `phenotype_ID` (`phenotype_ID`),
KEY `gene_ID` (`gene_ID`),
CONSTRAINT `0_147` FOREIGN KEY (`id
One thing that stands out is the data types are different sizes.
http://www.mysql.com/doc/en/InnoDB_foreign_key_constraints.html
-Original Message-
From: R.Dobson [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 24, 2003 8:42 AM
To: [EMAIL PROTECTED]
Subject: innodb foreign key
Hi
AM
To: [EMAIL PROTECTED]
Subject: innodb foreign key
Hi,
I have two innodb tables produced as show below
CREATE TABLE `monogenic` (
`id` smallint(5) unsigned NOT NULL default '0',
`exp_design` varchar(50) default NULL,
`disease` varchar(50) default NULL,
`omim` varchar(20) default NULL
is all Foreign Keys
and hence will be actualised through the references indirectly,
when they are changed, the new values will be propagated,
no insert statement is possible into a foreign key or anything
which is auto Increment,
Please correct me, foreign key
David,
- Original Message -
From: David Griffiths [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Friday, September 19, 2003 4:07 AM
Subject: InnoDB Foreign Key Constraint Issue
The following constraint is failing:
ALTER TABLE address_list ADD CONSTRAINT FOREIGN KEY
: InnoDB Foreign Key Constraint Issue
David,
- Original Message -
From: David Griffiths [EMAIL PROTECTED]
Newsgroups: mailing.database.myodbc
Sent: Friday, September 19, 2003 4:07 AM
Subject: InnoDB Foreign Key Constraint Issue
The following constraint is failing:
ALTER
The following constraint is failing:
ALTER TABLE address_list ADD CONSTRAINT FOREIGN KEY (address_type_id)
REFERENCES address_type (address_type_id);
The address_list table looks like:
mysql desc address_list;
+--+--+--+-+-+---+
| Field
-Ursprüngliche Nachricht-
Von: Toro Hill [mailto:[EMAIL PROTECTED]
Gesendet: Dienstag, 16. September 2003 03:36
An: Morten Gulbrandsen
Cc: [EMAIL PROTECTED]
Betreff: Re: FOREIGN KEY() REFERENCES ON UPDATE CASCADE ON DELETE
RESTRICT
I believe that your ON UPDATE CASCADE clause should
The first foreign key contraints in the following table definition mean this:
Any record that is inserted into the product_order table must have values for
product_category and
product_id that exist in the category and id fields of a record in the product table.
The second foreign key contraints
(product_category, product_id),
FOREIGN KEY (product_category, product_id) REFERENCES
product(category, id)
ON UPDATE CASCADE ON DELETE RESTRICT,
INDEX (customer_id),
FOREIGN KEY (customer_id) REFERENCES customer(id)
)TYPE=INNODB;
INSERT INTOPRODUCT(category, id, price
tables that reference this table (via a foreign key) will be updated also. So if there
are no rows
in PRODUCT_ORDER then ON UPDATE CASCADE will not insert new rows when you add rows to
the other
tables. What will happen instead is that any row (that already exists) in your
PRODUCT_ORDER table
Daevid,
CONSTRAINT `0_359` FOREIGN KEY (`rep_company_code`) REFERENCES
`company_table` (`company_code`)
you do not have ON UPDATE CASCADE in your constraint. MySQL versions 4.0.8
ignored it.
Best regards,
Heikki Tuuri
Innobase Oy
http://www.innodb.com
Foreign keys, transactions, and row level
Ah! So what I had to do was then...
show create table rep_table;
alter table rep_table drop foreign key 0_359;
ALTER TABLE rep_table ADD FOREIGN KEY (`rep_company_code`) REFERENCES
`company_table` (`company_code`) ON UPDATE CASCADE;
It all works now. Man, talk about good timing 'eh? A few
Daevid Vincent [EMAIL PROTECTED] wrote:
Thanks Victoria for the pointer. I should have looked there first. Duh!
Now for the help... I tried:
ALTER TABLE rep_table ADD FOREIGN KEY (`rep_company_code`) REFERENCES
`company_table` (`company_code`) ON UPDATE CASCADE;
But get ERROR 1216
I really appreciate your help with this.
Hmmm... So, while SET FOREIGN_KEY_CHECKS allowed me to ALTER the table, now
I can't UPDATE the company that has a rep with the same company_code
because:
Error :: 1217 :: Cannot delete a parent row: a foreign key constraint fails
UPDATE company_table SET
Daevid,
there is really one update you need to do first: upgrade to MySQL-4.0.14.
http://www.innodb.com/ibman.html#InnoDB_foreign_keys
Starting from version 3.23.50, you can also associate the ON DELETE CASCADE
or ON DELETE SET NULL clause with the foreign key constraint. Corresponding
key constraint
fails
I looked at some InnoDB status log that phpMyAdmin has, and it shows some
debug info that doesn't make sense to me. It complains that there is a
record, but of course there is a record. That's the record I want to
update?!
LATEST FOREIGN KEY ERROR
didactic_units_id_didactic_unit_lender
(ID_DIDACTIC_UNIT_LENDER),
-
- FOREIGN KEY(ID_DIDACTIC_UNIT_LENDER ) REFERENCES DIDACTIC_UNITS (ID)
ON
- DELETE SET NULL
-
- ) TYPE = InnoDB;
Query OK, 0 rows affected (0.02 sec)
mysql insert into DIDACTIC_UNITS(ID, ID_DIDACTIC_UNIT_LENDER) values (15
I see there is a way to DELETE or NULL a cascade, but is there a way to
UPDATE?
Here's what I mean. Given these rough table schemas. I'd like to be able to
UPDATE the company_code in the company_table, and have it update the same
rep_company_code in the rep_table. Ie. So a company has a certain
: Wednesday, September 10, 2003 3:29 PM
To: [EMAIL PROTECTED]
Subject: Foreign key update?
I see there is a way to DELETE or NULL a cascade, but is
there a way to
UPDATE?
Here's what I mean. Given these rough table schemas. I'd like
to be able to
UPDATE the company_code in the company_table
Daevid Vincent [EMAIL PROTECTED] wrote:
I see there is a way to DELETE or NULL a cascade, but is there a way to
UPDATE?
ON UPDATE CASCADE, ON UPDATE SET NULL.
Look at:
http://www.mysql.com/doc/en/InnoDB_foreign_key_constraints.html
Here's what I mean. Given these rough table
Thanks Victoria for the pointer. I should have looked there first. Duh!
Now for the help... I tried:
ALTER TABLE rep_table ADD FOREIGN KEY (`rep_company_code`) REFERENCES
`company_table` (`company_code`) ON UPDATE CASCADE;
But get ERROR 1216: Cannot add a child row: a foreign key constraint
Well, okay I just answered part of my own solution...
SET FOREIGN_KEY_CHECKS=0;
ALTER TABLE rep_table ADD FOREIGN KEY (`rep_company_code`) REFERENCES
`company_table` (`company_code`) ON UPDATE CASCADE;
SET FOREIGN_KEY_CHECKS=1;
Allowed that to happen.
I'm afraid to try the self referencing
' is the didactic unit lender for the didactic unit
'Information technology' of the course 'Medicine'.
So, i need a sort of 'foreign key' from the table DIDACTIC_UNITS to the
same table DIDACTIC_UNITSwith a field called DIDACTIC_UNIT_LENDER that
point to the record of the didactic unit lender
Susan,
- Original Message -
From: Susan Lam [EMAIL PROTECTED]
Newsgroups: mailing.database.mysql
Sent: Monday, August 11, 2003 8:37 AM
Subject: no foreign key and view?
I was told that mysql doesn't has foreign key and views. Is it ture?
Or is it different across different version
We are trying to load a set of data using Hibernate (O/R mapping tool).
Hibernate creates foreign key constraints when it is creating our DB
(mysql 4.0.14). The process for loading data requires us to break these
constraints at certain points, however they will all be satisfied at the
end
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