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Results tagged with inheritance
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not deleted
user 45252
For questions about extending a base object's features into a derived object.
4
votes
Accepted
Partial unique constraint spanning multiple tables in postgres
Postgres directly supports table inheritance, which does the trick:
CREATE TABLE base_possession (
possession_id SERIAL PRIMARY KEY
);
CREATE TABLE possession (
possession_id INTEGER NOT NULL REFERENCES …
- 251
3
votes
Partial unique constraint spanning multiple tables in postgres
Not an answer for postgres, but may be useful nevertheless to someone using Oracle who stumbles across this:
Oracle allows partial uniqueness to be enforced across multiple tables using a fast refresh …
- 251