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postgresql/src/test/regress/sql/foreign_key.sql
Tom Lane 981a7d32d1 From Stephan Szabo: 
I believe this should fix the issue that Philip Warner
noticed about the check for unique constraints meeting the
referenced keys of a foreign key constraint allowing the
specification of a subset of a foreign key instead of
rejecting it.  I also added tests for a base case of
this to the foreign key and alter table tests and patches
for expected output.
2000-12-05 19:57:56 +00:00

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--
-- FOREIGN KEY
--
-- MATCH FULL
--
-- First test, check and cascade
--
CREATE TABLE PKTABLE ( ptest1 int PRIMARY KEY, ptest2 text );
CREATE TABLE FKTABLE ( ftest1 int REFERENCES PKTABLE MATCH FULL ON DELETE CASCADE ON UPDATE CASCADE, ftest2 int );
-- Insert test data into PKTABLE
INSERT INTO PKTABLE VALUES (1, 'Test1');
INSERT INTO PKTABLE VALUES (2, 'Test2');
INSERT INTO PKTABLE VALUES (3, 'Test3');
INSERT INTO PKTABLE VALUES (4, 'Test4');
INSERT INTO PKTABLE VALUES (5, 'Test5');
-- Insert successful rows into FK TABLE
INSERT INTO FKTABLE VALUES (1, 2);
INSERT INTO FKTABLE VALUES (2, 3);
INSERT INTO FKTABLE VALUES (3, 4);
INSERT INTO FKTABLE VALUES (NULL, 1);
-- Insert a failed row into FK TABLE
INSERT INTO FKTABLE VALUES (100, 2);
-- Check FKTABLE
SELECT * FROM FKTABLE;
-- Delete a row from PK TABLE
DELETE FROM PKTABLE WHERE ptest1=1;
-- Check FKTABLE for removal of matched row
SELECT * FROM FKTABLE;
-- Update a row from PK TABLE
UPDATE PKTABLE SET ptest1=1 WHERE ptest1=2;
-- Check FKTABLE for update of matched row
SELECT * FROM FKTABLE;
DROP TABLE PKTABLE;
DROP TABLE FKTABLE;
--
-- check set NULL and table constraint on multiple columns
--
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 text, PRIMARY KEY(ptest1, ptest2) );
CREATE TABLE FKTABLE ( ftest1 int, ftest2 int, ftest3 int, CONSTRAINT constrname FOREIGN KEY(ftest1, ftest2)
REFERENCES PKTABLE MATCH FULL ON DELETE SET NULL ON UPDATE SET NULL);
-- Insert test data into PKTABLE
INSERT INTO PKTABLE VALUES (1, 2, 'Test1');
INSERT INTO PKTABLE VALUES (1, 3, 'Test1-2');
INSERT INTO PKTABLE VALUES (2, 4, 'Test2');
INSERT INTO PKTABLE VALUES (3, 6, 'Test3');
INSERT INTO PKTABLE VALUES (4, 8, 'Test4');
INSERT INTO PKTABLE VALUES (5, 10, 'Test5');
-- Insert successful rows into FK TABLE
INSERT INTO FKTABLE VALUES (1, 2, 4);
INSERT INTO FKTABLE VALUES (1, 3, 5);
INSERT INTO FKTABLE VALUES (2, 4, 8);
INSERT INTO FKTABLE VALUES (3, 6, 12);
INSERT INTO FKTABLE VALUES (NULL, NULL, 0);
-- Insert failed rows into FK TABLE
INSERT INTO FKTABLE VALUES (100, 2, 4);
INSERT INTO FKTABLE VALUES (2, 2, 4);
INSERT INTO FKTABLE VALUES (NULL, 2, 4);
INSERT INTO FKTABLE VALUES (1, NULL, 4);
-- Check FKTABLE
SELECT * FROM FKTABLE;
-- Delete a row from PK TABLE
DELETE FROM PKTABLE WHERE ptest1=1 and ptest2=2;
-- Check FKTABLE for removal of matched row
SELECT * FROM FKTABLE;
-- Delete another row from PK TABLE
DELETE FROM PKTABLE WHERE ptest1=5 and ptest2=10;
-- Check FKTABLE (should be no change)
SELECT * FROM FKTABLE;
-- Update a row from PK TABLE
UPDATE PKTABLE SET ptest1=1 WHERE ptest1=2;
-- Check FKTABLE for update of matched row
SELECT * FROM FKTABLE;
DROP TABLE PKTABLE;
DROP TABLE FKTABLE;
--
-- check set default and table constraint on multiple columns
--
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 text, PRIMARY KEY(ptest1, ptest2) );
CREATE TABLE FKTABLE ( ftest1 int DEFAULT -1, ftest2 int DEFAULT -2, ftest3 int, CONSTRAINT constrname2 FOREIGN KEY(ftest1, ftest2)
REFERENCES PKTABLE MATCH FULL ON DELETE SET DEFAULT ON UPDATE SET DEFAULT);
-- Insert a value in PKTABLE for default
INSERT INTO PKTABLE VALUES (-1, -2, 'The Default!');
-- Insert test data into PKTABLE
INSERT INTO PKTABLE VALUES (1, 2, 'Test1');
INSERT INTO PKTABLE VALUES (1, 3, 'Test1-2');
INSERT INTO PKTABLE VALUES (2, 4, 'Test2');
INSERT INTO PKTABLE VALUES (3, 6, 'Test3');
INSERT INTO PKTABLE VALUES (4, 8, 'Test4');
INSERT INTO PKTABLE VALUES (5, 10, 'Test5');
-- Insert successful rows into FK TABLE
INSERT INTO FKTABLE VALUES (1, 2, 4);
INSERT INTO FKTABLE VALUES (1, 3, 5);
INSERT INTO FKTABLE VALUES (2, 4, 8);
INSERT INTO FKTABLE VALUES (3, 6, 12);
INSERT INTO FKTABLE VALUES (NULL, NULL, 0);
-- Insert failed rows into FK TABLE
INSERT INTO FKTABLE VALUES (100, 2, 4);
INSERT INTO FKTABLE VALUES (2, 2, 4);
INSERT INTO FKTABLE VALUES (NULL, 2, 4);
INSERT INTO FKTABLE VALUES (1, NULL, 4);
-- Check FKTABLE
SELECT * FROM FKTABLE;
-- Delete a row from PK TABLE
DELETE FROM PKTABLE WHERE ptest1=1 and ptest2=2;
-- Check FKTABLE to check for removal
SELECT * FROM FKTABLE;
-- Delete another row from PK TABLE
DELETE FROM PKTABLE WHERE ptest1=5 and ptest2=10;
-- Check FKTABLE (should be no change)
SELECT * FROM FKTABLE;
-- Update a row from PK TABLE
UPDATE PKTABLE SET ptest1=1 WHERE ptest1=2;
-- Check FKTABLE for update of matched row
SELECT * FROM FKTABLE;
DROP TABLE PKTABLE;
DROP TABLE FKTABLE;
--
-- First test, check with no on delete or on update
--
CREATE TABLE PKTABLE ( ptest1 int PRIMARY KEY, ptest2 text );
CREATE TABLE FKTABLE ( ftest1 int REFERENCES PKTABLE MATCH FULL, ftest2 int );
-- Insert test data into PKTABLE
INSERT INTO PKTABLE VALUES (1, 'Test1');
INSERT INTO PKTABLE VALUES (2, 'Test2');
INSERT INTO PKTABLE VALUES (3, 'Test3');
INSERT INTO PKTABLE VALUES (4, 'Test4');
INSERT INTO PKTABLE VALUES (5, 'Test5');
-- Insert successful rows into FK TABLE
INSERT INTO FKTABLE VALUES (1, 2);
INSERT INTO FKTABLE VALUES (2, 3);
INSERT INTO FKTABLE VALUES (3, 4);
INSERT INTO FKTABLE VALUES (NULL, 1);
-- Insert a failed row into FK TABLE
INSERT INTO FKTABLE VALUES (100, 2);
-- Check FKTABLE
SELECT * FROM FKTABLE;
-- Check PKTABLE
SELECT * FROM PKTABLE;
-- Delete a row from PK TABLE (should fail)
DELETE FROM PKTABLE WHERE ptest1=1;
-- Delete a row from PK TABLE (should succeed)
DELETE FROM PKTABLE WHERE ptest1=5;
-- Check PKTABLE for deletes
SELECT * FROM PKTABLE;
-- Update a row from PK TABLE (should fail)
UPDATE PKTABLE SET ptest1=0 WHERE ptest1=2;
-- Update a row from PK TABLE (should succeed)
UPDATE PKTABLE SET ptest1=0 WHERE ptest1=4;
-- Check PKTABLE for updates
SELECT * FROM PKTABLE;
DROP TABLE PKTABLE;
DROP TABLE FKTABLE;
-- MATCH unspecified
-- Base test restricting update/delete
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, PRIMARY KEY(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int, ftest2 int, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE);
-- Insert Primary Key values
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, 3, 'test2');
INSERT INTO PKTABLE VALUES (2, 3, 4, 'test3');
INSERT INTO PKTABLE VALUES (2, 4, 5, 'test4');
-- Insert Foreign Key values
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
INSERT INTO FKTABLE VALUES (NULL, 2, 3, 2);
INSERT INTO FKTABLE VALUES (2, NULL, 3, 3);
INSERT INTO FKTABLE VALUES (NULL, 2, 7, 4);
INSERT INTO FKTABLE VALUES (NULL, 3, 4, 5);
-- Insert a failed values
INSERT INTO FKTABLE VALUES (1, 2, 7, 6);
-- Show FKTABLE
SELECT * from FKTABLE;
-- Try to update something that should fail
UPDATE PKTABLE set ptest2=5 where ptest2=2;
-- Try to update something that should succeed
UPDATE PKTABLE set ptest1=1 WHERE ptest2=3;
-- Try to delete something that should fail
DELETE FROM PKTABLE where ptest1=1 and ptest2=2 and ptest3=3;
-- Try to delete something that should work
DELETE FROM PKTABLE where ptest1=2;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- cascade update/delete
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, PRIMARY KEY(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int, ftest2 int, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE
ON DELETE CASCADE ON UPDATE CASCADE);
-- Insert Primary Key values
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, 3, 'test2');
INSERT INTO PKTABLE VALUES (2, 3, 4, 'test3');
INSERT INTO PKTABLE VALUES (2, 4, 5, 'test4');
-- Insert Foreign Key values
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
INSERT INTO FKTABLE VALUES (NULL, 2, 3, 2);
INSERT INTO FKTABLE VALUES (2, NULL, 3, 3);
INSERT INTO FKTABLE VALUES (NULL, 2, 7, 4);
INSERT INTO FKTABLE VALUES (NULL, 3, 4, 5);
-- Insert a failed values
INSERT INTO FKTABLE VALUES (1, 2, 7, 6);
-- Show FKTABLE
SELECT * from FKTABLE;
-- Try to update something that will cascade
UPDATE PKTABLE set ptest2=5 where ptest2=2;
-- Try to update something that should not cascade
UPDATE PKTABLE set ptest1=1 WHERE ptest2=3;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should cascade
DELETE FROM PKTABLE where ptest1=1 and ptest2=5 and ptest3=3;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should not have a cascade
DELETE FROM PKTABLE where ptest1=2;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- set null update / set default delete
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, PRIMARY KEY(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int DEFAULT 0, ftest2 int, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE
ON DELETE SET DEFAULT ON UPDATE SET NULL);
-- Insert Primary Key values
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, 3, 'test2');
INSERT INTO PKTABLE VALUES (2, 3, 4, 'test3');
INSERT INTO PKTABLE VALUES (2, 4, 5, 'test4');
-- Insert Foreign Key values
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
INSERT INTO FKTABLE VALUES (2, 3, 4, 1);
INSERT INTO FKTABLE VALUES (NULL, 2, 3, 2);
INSERT INTO FKTABLE VALUES (2, NULL, 3, 3);
INSERT INTO FKTABLE VALUES (NULL, 2, 7, 4);
INSERT INTO FKTABLE VALUES (NULL, 3, 4, 5);
-- Insert a failed values
INSERT INTO FKTABLE VALUES (1, 2, 7, 6);
-- Show FKTABLE
SELECT * from FKTABLE;
-- Try to update something that will set null
UPDATE PKTABLE set ptest2=5 where ptest2=2;
-- Try to update something that should not set null
UPDATE PKTABLE set ptest2=2 WHERE ptest2=3 and ptest1=1;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should set default
DELETE FROM PKTABLE where ptest1=2 and ptest2=3 and ptest3=4;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should not set default
DELETE FROM PKTABLE where ptest2=5;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- set default update / set null delete
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, PRIMARY KEY(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int DEFAULT 0, ftest2 int DEFAULT -1, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE
ON DELETE SET NULL ON UPDATE SET DEFAULT);
-- Insert Primary Key values
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, 3, 'test2');
INSERT INTO PKTABLE VALUES (2, 3, 4, 'test3');
INSERT INTO PKTABLE VALUES (2, 4, 5, 'test4');
INSERT INTO PKTABLE VALUES (2, -1, 5, 'test5');
-- Insert Foreign Key values
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
INSERT INTO FKTABLE VALUES (2, 3, 4, 1);
INSERT INTO FKTABLE VALUES (2, 4, 5, 1);
INSERT INTO FKTABLE VALUES (NULL, 2, 3, 2);
INSERT INTO FKTABLE VALUES (2, NULL, 3, 3);
INSERT INTO FKTABLE VALUES (NULL, 2, 7, 4);
INSERT INTO FKTABLE VALUES (NULL, 3, 4, 5);
-- Insert a failed values
INSERT INTO FKTABLE VALUES (1, 2, 7, 6);
-- Show FKTABLE
SELECT * from FKTABLE;
-- Try to update something that will fail
UPDATE PKTABLE set ptest2=5 where ptest2=2;
-- Try to update something that will set default
UPDATE PKTABLE set ptest1=0, ptest2=5, ptest3=10 where ptest2=2;
UPDATE PKTABLE set ptest2=10 where ptest2=4;
-- Try to update something that should not set default
UPDATE PKTABLE set ptest2=2 WHERE ptest2=3 and ptest1=1;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should set null
DELETE FROM PKTABLE where ptest1=2 and ptest2=3 and ptest3=4;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
-- Try to delete something that should not set null
DELETE FROM PKTABLE where ptest2=5;
-- Show PKTABLE and FKTABLE
SELECT * from PKTABLE;
SELECT * from FKTABLE;
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
CREATE TABLE PKTABLE (ptest1 int PRIMARY KEY);
CREATE TABLE FKTABLE_FAIL1 ( ftest1 int, CONSTRAINT fkfail1 FOREIGN KEY (ftest2) REFERENCES PKTABLE);
CREATE TABLE FKTABLE_FAIL2 ( ftest1 int, CONSTRAINT fkfail1 FOREIGN KEY (ftest1) REFERENCES PKTABLE(ptest2));
DROP TABLE FKTABLE_FAIL1;
DROP TABLE FKTABLE_FAIL2;
DROP TABLE PKTABLE;
-- Test for referencing column number smaller than referenced constraint
CREATE TABLE PKTABLE (ptest1 int, ptest2 int, UNIQUE(ptest1, ptest2));
CREATE TABLE FKTABLE_FAIL1 (ftest1 int REFERENCES pktable(ptest1));
DROP TABLE FKTABLE_FAIL1;
DROP TABLE PKTABLE;
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