sqlsql-servernon-clustered-indexheap-table

Does HEAP mean the same thing with a table that has Non-Clustered index?

In terms of SQL terminology, does HEAP stands for a table that has Non-Clustered index?

Or there is a nuance or it has completely a different meaning?

Solution

  • A heap can have either no index at all or a non-clustered index. But a clustered table can also have non-clustered indexs on top so -

    does HEAP stands for a table that has Non-Clustered index?

    is not a great definition as a table with a non-clustered index could be either a clustered table or a heap.