When you insert new records into an SQL database, you may run into issues where you accidentally overwrite records that are already present due to a duplication issue. You can use a simple alteration ...
-- 1. Remove Duplicates -- 2. Standardize the Data -- 3. Decide on what to do with Null Values or blank values -- 4. Remove unwanted columns/rows but double check for its needs. -- Create a duplicate ...
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