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List Question

Symfony2 UniqueEntity not working: throws db exception

Is there a way to make multiple columns unique in Access 2007?

How to catch SqlIntegrityConstraint violation exception

Does MySQL have any key constraints to handle unique pairings?

Oracle - Preventing duplicates based on two columns

Creating a Unique SQL Table Constraint with Primary Key

How do you impose a case insensitive unique constraint on a Firebird field value?

Unique Constraint Exception handling in c# .NET

Duplicate data in a unique indexed field in mysql

unique property in Firebase

Which column is prioritized in MySQL for unique constraint errors?

Fluent NHibernate: unique column that allows multiple NULL values

Oracle, unique constraint violated on Hibernate insert

SQL - Tuple as Primary Key

SQL DB2 - Select query based on a column value unique to another column

MySQL unique constraint over two column that are in different tables

Hibernate annotations @Table @UniqueConstraint inheritance

PostgreSQL Unique Constraint with Exclusions

Select and Create_If_Not_Available versus Create always on a table with Unique Constraint

Multiple-attr unique constraint prevents row insertion due to "duplicate" error

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