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[BUGS] foreign key constraint not working when index tablespace is not default.

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Joel Krajden
 
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Default [BUGS] foreign key constraint not working when index tablespace is not default. - 03-26-2005 , 11:47 PM






I have two tablespaces: fis (default) and fis_index. The users are required to
create the tables in fis and the indexes if fis_index.

If the indexes are created in fis_index, the foreign key constraints in the
user table are ignored on insert and update.

The constraints work properly if the indexes are created in the default
tablespace.

Joel

----------

fis=> SELECT version();
version
------------------------------------------------------------------------
PostgreSQL 8.0.1 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.3.2
(1 row)


-- Department Mappings
-- -------------------
-- Mapping between the department code and the full department name.

CREATE TABLE dept_map (

code VARCHAR(2),
description VARCHAR(64),

PRIMARY KEY( code ) USING INDEX TABLESPACE fis_index

-- Card Access category mappings.
-- ------------------------------
-- Different access level to the card access application.

CREATE TABLE card_category_map (

code VARCHAR(16),
description VARCHAR(64),

PRIMARY KEY( code ) USING INDEX TABLESPACE fis_index
);

-- Fis Category Mappings
-- ---------------------
-- Mapping between categories in FIS and access levels in card access.

CREATE TABLE fis_title_map (

fis_title VARCHAR(64),
card_category VARCHAR(64),

PRIMARY KEY( fis_title ) USING INDEX TABLESPACE fis_index,

FOREIGN KEY( card_category ) REFERENCES card_category_map( code )

);

-- Users
-- --------------------
-- Table of users with valid accounts to the application.
--
CREATE TABLE users (

username VARCHAR(8),
name VARCHAR(64),
email VARCHAR(128),
department VARCHAR(2),
title VARCHAR(64),

PRIMARY KEY( name, department, title ) USING INDEX TABLESPACE fis_index,

FOREIGN KEY( department ) REFERENCES dept_map( code ),
FOREIGN KEY( title ) REFERENCES fis_title_map( fis_title )

);

--
Quote:
Joel Krajden | Rm: LB-915, Tel: 514 848-2424 3052 |
| Fax: 514 848-2830 |
Senior Systems Analyst | Email: joelk (AT) cs (DOT) concordia.ca |
Engineering & Computer Sc.| http://www.cs.concordia.ca/~staffcs/joelk |
Concordia University | Remember it's a circus and the clowns |
Montreal, Canada | are supposed to make you laugh, not cry. |
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  #2  
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Tom Lane
 
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Default Re: [BUGS] foreign key constraint not working when index tablespace is not default. - 03-27-2005 , 01:42 AM






Joel Krajden <joelk (AT) cs (DOT) concordia.ca> writes:
Quote:
If the indexes are created in fis_index, the foreign key constraints in the
user table are ignored on insert and update.
Works for me...

$ mkdir /tmp/fis
$ mkdir /tmp/fis_index
$ psql regression
....
regression=# create tablespace fis location '/tmp/fis';
CREATE TABLESPACE
regression=# create tablespace fis_index location '/tmp/fis_index';
CREATE TABLESPACE
regression=# \i joel.sql
psql:joel.sql:11: NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "dept_map_pkey" for table "dept_map"
CREATE TABLE
psql:joel.sql:23: NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "card_category_map_pkey" for table "card_category_map"
CREATE TABLE
psql:joel.sql:38: NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "fis_title_map_pkey" for table "fis_title_map"
CREATE TABLE
psql:joel.sql:57: NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "users_pkey" for table "users"
CREATE TABLE
regression=# insert into users values('username','name','email','dp','title');
ERROR: insert or update on table "users" violates foreign key constraint "users_department_fkey"
DETAIL: Key (department)=(dp) is not present in table "dept_map".
regression=# insert into dept_map values('dp','desc');
INSERT 0 1
regression=# insert into users values('username','name','email','dp','title');
ERROR: insert or update on table "users" violates foreign key constraint "users_title_fkey"
DETAIL: Key (title)=(title) is not present in table "fis_title_map".
regression=# insert into fis_title_map values('title','cardcat');
ERROR: insert or update on table "fis_title_map" violates foreign key constraint "fis_title_map_card_category_fkey"
DETAIL: Key (card_category)=(cardcat) is not present in table "card_category_map".
regression=# insert into card_category_map values('cardcat','desc');
INSERT 0 1
regression=# insert into fis_title_map values('title','cardcat');
INSERT 0 1
regression=# insert into users values('username','name','email','dp','title');
INSERT 0 1
regression=#

regards, tom lane

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  #3  
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Tom Lane
 
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Default Re: [BUGS] foreign key constraint not working when index tablespace is not default. - 03-29-2005 , 05:33 PM



Joel Krajden <joelk (AT) cs (DOT) concordia.ca> writes:
Quote:
But if I create the tables as a mortal user or create them as postgres
but in the schema of user joelk and grant all to user joelk, I can
insert data without the foreign key constraint being respected. Now if
I drop the foreign key constraint and recreate it with a schema prefix
in the references section, the constarint works fine.
This is even harder to believe than the first report. Could we see a
complete, self-contained test case? A SQL script that demonstrates the
problem from a standing start in an empty database is what I have in mind.

(What I suspect is that you have multiple similarly-named tables in
different schemas and are getting confused by that...)

regards, tom lane

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