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Results tagged with postgresql
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user 45252
All versions of PostgreSQL. Add an additional version-specific tag like [postgresql-13] if that context is relevant.
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 RE …
- 251
8
votes
2
answers
11k
views
Partial unique constraint spanning multiple tables in postgres
To enforce partial uniqueness in postgres, it is a well known workaround to create a partial unique index instead of an explicit constraint, like so:
CREATE TABLE possession (
possession_id serial …
- 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