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 Unique Identifier for EveryRows

Author  Topic 

SanjeevBaranwal
Starting Member

14 Posts

Posted - 2009-01-21 : 06:56:13
Hi,
Please tell me whether every rowdata of a table has any uniqueID or any number. Means if I retrieve some data through select statement then can I know the correponding Unique identifier value for a particular row depending on the indexing e.g. row 2 has Unique identifier value as 2 according to the indexing.

raky
Aged Yak Warrior

767 Posts

Posted - 2009-01-21 : 06:59:13
If u have a primary key constraint or unique key constraint defined on any column in a table then that column will have unique value for every row data
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visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-01-21 : 08:40:10
or if in sql 2005 you can generate unique value on the fly based on any order using ROW_NUMBER() function
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