GUID Comparision in SQL Select Query

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SQL-Server-2008

Dear All,

I have a table with the column of uniqueidentifier Datatype. here i want to select the records compare with the uniqueidentifier data.

Ex:

SQL

CREATE TABLE [dbo].[Table1](
    [Id] [uniqueidentifier] NOT NULL,
    [Name] [nvarchar] (100) NOT NULL

SQL

SELECT * FROM Table1 WHERE Id <= 'A8912F3C-81BE-4076-B6AB-0000017330AD'

It's possible to select the records? please suggest me

Posted 20-Sep-11 21:38pm

Suresh Kumar_P

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OriginalGriff · Answer 1 · 2011-09-20T21:43:00

That is a meaningless query - "less than or equal to" in Guid terms has no real meaning. What records are "less than" a Guid? Undefined, really, since Guids are not issued in any particular order. The next Guid issues could start with a '2', or a 'F', or another 'A'.

Don't try to compare Guids based on any order - the concept is meaningless for them.

What are you trying to do, that you think "<=" with Guids would be helpful?

jim lahey · Answer 2 · 2011-09-20T21:43:00

Others will have to correct me if I'm wrong, but I don't believe that you can use <= or >= operators with uniqueidentifiers.

Your best bet is the equality operator:

SQL

SELECT * FROM Table1 WHERE Id = 'A8912F3C-81BE-4076-B6AB-0000017330AD'

If you want to query a range of uniqueidentifiers you could use a where.. in clause:

SQL

SELECT * FROM Table1 WHERE Id IN ('A8912F3C-81BE-4076-B6AB-0000017330AD', 'B8912F3C-81BE-4076-B6AB-0000017330AD', 'C8912F3C-81BE-4076-B6AB-0000017330AD')

GUID Comparision in SQL Select Query

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