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Editorial Team
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Asked: 2026-06-07T22:46:21+00:00

i have created a table where i used unique identifier(GUID) as a primary key

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i have created a table where i used unique identifier(GUID) as a primary key of table. Now i need to create a indexing on my table which one will be best for me..i am going to use this table for error logging.

Following is my table structure 

CREATE TABLE [dbo].[errors](
[error_id] [uniqueidentifier] NOT NULL,
[assembly_name] [varchar](50) NULL,
[method_name] [varchar](50) NULL,
[person_id] [int] NULL,
[timestamp] [datetime] NULL,
[description] [varchar](max) NULL,
[parameter_list] [varchar](max) NULL,
[exception_text] [nvarchar](max) NULL)

So which table i use as a primary key and index.

Thanks in advance.

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1 Answer

  1. Editorial Team

    You can use that as PK but not good if you use it as clustered index.In that case the GUID will be copied in all the nc index keys and thus makes them much wider and could cause performance issue.Also, this might cause page spilts which is no good.Wide indexes means more space will be used.If you have used GUID to avoid the last page contention issues try to use some sort of hashing technique to make sure that data goes on diff pages.But in that case you have to use same hashing while selecting form table using PK.

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