What issues are present with duplicate rows in SQL?

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Data inconsistency: Duplicate rows can create data inconsistency in a database. It can cause conflicting data and redundant information.

Performance issues: Duplicate rows can also cause performance issues as it increases the size of the database and can slow down queries.

Security concerns: Duplicate rows can create security concerns as it can lead to data breaches and unauthorized access to sensitive information.

Intentional or accidental data insertion: Duplicate rows can be inserted intentionally or accidentally, both of which can lead to unexpected results and inaccurate data analysis.

Data validation challenges: Duplicate rows can create challenges in validating data as it can be difficult to determine which row is the correct one.

Difficulty in maintaining data integrity: Duplicate rows can make it difficult to maintain data integrity as updates and modifications need to be made to every instance of the duplicated data.

Storage space wastage: Duplicate rows contribute to storage space wastage, which can increase server storage costs.