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New posts in unique-constraint

PostgreSQL Unique Constraint with Exclusions

Unique Index except for one string

SQL Server: "Mostly-unique" index

How can I specify a unique constraint for attributes using the <xs:unique> as a child element of the <xs:element> tag?

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Conditional unique constraint in oracle

Unique constraint violation error in while SaveOrUpdate

Mysql unique constraint allowing single row for a combination

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Django model unique together both ways

Rollback Transaction on Trigger ERROR

How to make Django form Field Unique?

Unique Constraint Violated in SQL

How to make empty string as null value to allow duplicate empty strings in optional field?

ORA-01452: cannot CREATE UNIQUE INDEX; duplicate keys found

UNIQUE constraint where NULL is one valid value [duplicate]

Hibernate / JPA many to many relationship through a join table and a composite key, Unique Constraint issue

Flask-sqlalchemy unique contraint not working