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New posts in unique-constraint

How to annotate unique constraint with WHERE clause in JPA

Spring Thrown JpaSystemException instead of DuplicateKeyException

Are unique constraints on the DB necessary?

Why can't I specify both a Primary Key and a Unique Constraint on the same table?

Core Data (After Adding Unique Constraint) : annotation: repairing missing delete propagation for to-many relationship

Multi-Column Unique Constraint with web2py

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Add a unique constraint of a sql table as foreign key reference to an another sql table

Unique constraint for permutations across multiple columns

Why is there no unique constraint in Google Appengine?

How to do multiple column unique-constraint in ormlite ( SQLite )

PostgreSQL: starting a sequence at MAX(the_column)+1

Combination of two columns unique constraint

Composite Unique Constraint SQL

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Entity Framework Core - prevent multiple null values on unique indexes [duplicate]

Catching constraint violations in JPA 2.0

How to create unique CONSTRAINT to relationship by neo4j cypher?

How to create a unique constraint just on the date part of a datetime?

How can i make ruby on rails handle duplicate record errors from MySQL

Oracle 'INSERT ALL' ignore duplicates

duplicate null value violation on UNIQUE KEY constraint in Mssql