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i dont understand "insertion unsuccesfulDuplicate entry '0' for key 1"


zachary

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If you are getting this kind of Error

#1062 - Duplicate entry '5' for key 1 

You cannot insert same value in the filed which has primary key. It must be unique.

 

Normally, an error occurs when you try to INSERT or UPDATE a row that causes a primary key, unique key, or foreign key violation. If you are using a transactional storage engine such as InnoDB, MySQL automatically rolls back the statement. If you are using a non-transactional storage engine, MySQL stops processing the statement at the row for which the error occurred and leaves any remaining rows unprocessed.
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