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Msg 8169, Level 16, State 2, Line 121 Conversion failed when converting from a character string to uniqueidentifier.

Parvinder Tomar 146 Reputation points
2022-03-08T17:45:05.853+00:00

I received the below error in the Azure SQL database, I have 6 tables with the inner joins in the query and the last join is where I am using table1.column=CAST(table2.Column AS UNIQUEIDENTIFIER) and my query fails as soon as it runs. I checked the data and there are no bad data, I am excluding the rows that are not a GUID-like.

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Azure SQL Database
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  1. Alberto Morillo 34,676 Reputation points MVP Volunteer Moderator
    2022-03-08T18:02:23.53+00:00

    Please try joining them by converting both sides to NVARCHAR(36). 

    CAST(table1.column AS NVARCHAR(36)) =CAST(table2.Column AS NVARCHAR(36))
    1 person found this answer helpful.

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