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SQL: Add ON DELETE clause to foreign keys

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This makes it easier to remove a complete package or system when
debugging.
This commit is contained in:
Yorhel 2016-10-06 09:52:18 +02:00
parent 488b88c3cf
commit d2d48920f4
2 changed files with 6 additions and 3 deletions
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6
sql/schema.sql
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@ -13,7 +13,7 @@ CREATE TABLE contents (
CREATE TABLE packages ( CREATE TABLE packages (
id SERIAL PRIMARY KEY, id SERIAL PRIMARY KEY,
system integer NOT NULL REFERENCES systems(id), system integer NOT NULL REFERENCES systems(id) ON DELETE CASCADE,
category varchar, category varchar,
name varchar NOT NULL, name varchar NOT NULL,
UNIQUE(system, name, category) -- Note the order, lookups on (system,name) are common UNIQUE(system, name, category) -- Note the order, lookups on (system,name) are common
@ -21,14 +21,14 @@ CREATE TABLE packages (
CREATE TABLE package_versions ( CREATE TABLE package_versions (
id SERIAL PRIMARY KEY, id SERIAL PRIMARY KEY,
package integer NOT NULL REFERENCES packages(id), package integer NOT NULL REFERENCES packages(id) ON DELETE CASCADE,
version varchar NOT NULL, version varchar NOT NULL,
released date NOT NULL, released date NOT NULL,
UNIQUE(package, version) UNIQUE(package, version)
); );
CREATE TABLE man ( CREATE TABLE man (
package integer NOT NULL REFERENCES package_versions(id), package integer NOT NULL REFERENCES package_versions(id) ON DELETE CASCADE,
name varchar NOT NULL, name varchar NOT NULL,
section varchar NOT NULL, section varchar NOT NULL,
filename varchar NOT NULL, filename varchar NOT NULL,

3
sql/update-2016-10-06.sql Normal file
View file

@ -0,0 +1,3 @@
ALTER TABLE packages DROP CONSTRAINT packages_system_fkey, ADD CONSTRAINT packages_system_fkey FOREIGN KEY(system) REFERENCES systems(id) ON DELETE CASCADE;
ALTER TABLE package_versions DROP CONSTRAINT package_versions_package_fkey, ADD CONSTRAINT package_versions_package_fkey FOREIGN KEY(package) REFERENCES packages(id) ON DELETE CASCADE;
ALTER TABLE man DROP CONSTRAINT man_package_fkey, ADD CONSTRAINT man_package_fkey FOREIGN KEY(package) REFERENCES package_versions(id) ON DELETE CASCADE;