Unique combination of 2 columns, order independent Understanding Unique Combinations of Two Columns An Order Independent Approach When working with data one common task is to find unique combinations from two co 2 min read 29-09-2024 36
Type Error while populating a model in Django with UniqueConstraint Understanding Type Error in Django with Unique Constraint Django is a powerful web framework that makes it easy to build robust web applications However develop 3 min read 18-09-2024 48
Does MySQL ignore null values on unique constraints? Understanding My SQLs Behavior with Unique Constraints and NULL Values When working with databases understanding how unique constraints interact with NULL value 2 min read 07-09-2024 48
Can I conditionally enforce a uniqueness constraint? Conditionally Enforcing Uniqueness Constraints in Databases Imagine you have a database storing user information where active users must have unique usernames H 2 min read 06-09-2024 48
How can I avoid "ERROR: there is no unique constraint matching given keys for referenced table" on referencing combination primary key on Postgres? How to Avoid the ERROR there is no unique constraint matching given keys for referenced table in Postgre SQL When working with Postgre SQL it is not uncommon to 3 min read 02-09-2024 69