SQL Server :: Migrating Data From 'one To Many' To 'many To Many'?

Jan 6, 2011

You have a SQL Database with legacy data.

New functional requirements stipulate that what was once a one to many relationship is now a many to many relationship. The relationship comprises a simple lookup table

How does one manage the migration of data from the old structure to the new???

I have the following script which will move the data from/to the right tables:

[Code]....

What i'm wondering is, once i have run the script to copy the data across, do people recommend that the LegacyTable.LookUpPK_ID field be deleted permanently?

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