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There is a table in PostgreSQL with columns FirstName and LastName. How to ensure the uniqueness of the combination of these two fields?
sobes.tech AI
Answer from AI
To ensure the uniqueness of the combination of the columns FirstName and LastName in a PostgreSQL table, you need to create a composite unique index or a unique constraint on these two columns.
Example SQL query:
ALTER TABLE your_table_name
ADD CONSTRAINT unique_first_last UNIQUE (FirstName, LastName);
This guarantees that there will be no two rows in the table with the same values for FirstName and LastName simultaneously.