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Editorial Team
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Asked: 2026-06-10T02:38:41+00:00

I am migrating an MVC 3 application from EF 4.3 to EF 5. I

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I am migrating an MVC 3 application from EF 4.3 to EF 5. I noticed that EF 5 expects a CreatedOn column in the __MigrationHistory table, which does not exist as the migrations were created by an older version.

SELECT TOP (1) 
[c].[CreatedOn] AS [CreatedOn]
FROM [dbo].[__MigrationHistory] AS [c]

How do I resolve this issue without wiping my migration history? I am thinking of a query to infer the column’s value from the migration name, which is in the following format:

201203111201542_MigrationName
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1 Answer

  1. Editorial Team

    The CreatedOn column is no longer required. We attempt to query from it in order to determine whether we need to drop it. i.e. You are upgrading from 4.3 to 5.

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