SQL
2 pagesImplementing Mutual Exclusion Constraints with Exclude
Exclude constraint is a PostgreSQL extension that can implement more advanced and sophisticated database constraints.
Exclude constraint is a PostgreSQL extension that can implement more advanced and sophisticated database constraints.
Distinct On: Remove Duplicate Data
Use Distinct On extension clause to quickly find records with maximum/minimum values within groups
Use Distinct On extension clause to quickly find records with maximum/minimum values within groups