Data updation issues in a SQL Server table

Tags:
SQL Server Data Validation
SQL Server databases
SQL Server tables
I have accidentally updated all data in a SQL Server table according to one data source, and now all my data is a copy of that data. How can I make a command to allow all data in that table to search for other data and update, according to another reference table?

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If you have a primary key in your table that is messed up that corresponds to a value in the other table then yes you can.

You may want to look a Lumigents Log Explorer and simply roll back the incorrect statement (will only work if your database is in full recovery mode).

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