how do I import a MySQL dump file to a database without overwriting records with the same value?
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how do I import a MySQL dump file to a database without overwriting records with the same value?
Here is the link to the manual. You can specify whether to replace existing records.
The
--replaceand--ignoreoptions control handling of input rows that duplicate existing rows on unique key values. If you specify--replace, new rows replace existing rows that have the same unique key value. If you specify--ignore, input rows that duplicate an existing row on a unique key value are skipped. If you do not specify either option, an error occurs when a duplicate key value is found, and the rest of the text file is ignored.If you are using phpmyadmin then you will have an option for this in the GUI as well.