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Increase test coverage in RI_FKey_pk_upd_check_required()

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This checks the case where the primary key has at least one null
column.

Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com>
Reviewed-by: Mi Tar <mmitar@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/7ae17c95-0c99-d420-032a-c271f510112b@2ndquadrant.com/
This commit is contained in:
Peter Eisentraut 2019-01-16 16:53:38 +01:00
parent 74bd06648b
commit cdaf4a4727
2 changed files with 43 additions and 0 deletions
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24
src/test/regress/expected/foreign_key.out
View File

@ -397,6 +397,30 @@ SELECT * from FKTABLE;
| 3 | 4 | 5
(5 rows)
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- restrict with null values
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, UNIQUE(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int, ftest2 int, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE (ptest1, ptest2, ptest3));
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, NULL, 'test2');
INSERT INTO PKTABLE VALUES (2, NULL, 4, 'test3');
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
DELETE FROM PKTABLE WHERE ptest1 = 2;
SELECT * FROM PKTABLE;
ptest1 | ptest2 | ptest3 | ptest4
--------+--------+--------+--------
1 | 2 | 3 | test1
1 | 3 | | test2
(2 rows)
SELECT * FROM FKTABLE;
ftest1 | ftest2 | ftest3 | ftest4
--------+--------+--------+--------
1 | 2 | 3 | 1
(1 row)
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- cascade update/delete

19
src/test/regress/sql/foreign_key.sql
View File

@ -260,6 +260,25 @@ SELECT * from FKTABLE;
DROP TABLE FKTABLE;
DROP TABLE PKTABLE;
-- restrict with null values
CREATE TABLE PKTABLE ( ptest1 int, ptest2 int, ptest3 int, ptest4 text, UNIQUE(ptest1, ptest2, ptest3) );
CREATE TABLE FKTABLE ( ftest1 int, ftest2 int, ftest3 int, ftest4 int, CONSTRAINT constrname3
FOREIGN KEY(ftest1, ftest2, ftest3) REFERENCES PKTABLE (ptest1, ptest2, ptest3));
INSERT INTO PKTABLE VALUES (1, 2, 3, 'test1');
INSERT INTO PKTABLE VALUES (1, 3, NULL, 'test2');
INSERT INTO PKTABLE VALUES (2, NULL, 4, 'test3');
INSERT INTO FKTABLE VALUES (1, 2, 3, 1);
DELETE FROM PKTABLE WHERE ptest1 = 2;
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