Primary Key and Indexing

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SQL-Server-2005

Hello everyone,

Please consider the scenario....

I have a table called Invoice
with following columns
1. InvoiceID (int Primary Key)
2. InvoiceNo (nvarchar(20), unique)
3. InvoiceDate
4. CustomerID

By default "PK_Invoice" index is created as clustered index.
but i want to cluster using InvoiceDate, so i add an index called "IX_Invoice_Date"
and change the "Create as clustered" property to true. My Question is, will the index "PK_Invoice" still continue to be operational or will i need another index for "InvoiceID" feild?

Thank you

Posted 5-Sep-11 1:58am

Anoop Ananthan

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Wendelius · Accepted Answer · 2011-09-05T02:00:00

Solution 1

Primary key can be based on a non-clustered index so if you build the table so that the clustered index is created for InvoiceDate, your primary key will still be operational. Clustered index for primary key is just the default 'setting'.

Posted 5-Sep-11 2:00am

Wendelius

Comments

Abhinav S 5-Sep-11 8:01am

Perfect.

Wendelius 5-Sep-11 8:02am

Thanks :)