Primary Key Sorting

Question

Is a table intrinsically sorted by it\'s primary key? If I have a table with the primary key on a BigInt identity column can I trust that queries will always return the dat

Answer 1

In SQL Server: no, by it's clustering key - which default to the primary key, but doesn't have to be the same.

The primary key's main function is to uniquely identify each row in the table - but it doesn't imply any (physical) sorting per se.

Not sure about the other database systems.

Marc