Can we have 2 primary keys in a table?

Question

Primary keys must contain UNIQUE values, and cannot contain NULL values. A table can have only ONE primary key; and in the table, this primary key can consist of single or multiple columns (fields).

Can a table have two primary keys?

A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one primary key.

How do I create multiple primary keys in a table?

A primary key is the key that uniquely identifies a record and is used in all indexes. This is why you can't have more than one.

Expert · Answer

A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one primary key.

Expert · Answer

A primary key is the key that uniquely identifies a record and is used in all indexes. This is why you can't have more than one.

Can we have 2 primary keys in a table?

Can a table have two primary keys?

How do I create multiple primary keys in a table?

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