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Fakespot review grade

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How are reviewers describing this item?
excellent, basic, relational, improved and perfect.

Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 6.

Our engine has profiled the reviewer patterns and has determined that there may be deception involved.

Our engine has determined that the review content quality is low.

Our engine has analyzed and discovered that 60.0% of the reviews are reliable.

This product had a total of 7 reviews as of our last analysis date on Oct 3 2019.

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Posted by a reviewer on Amazon

I purchased this to learn sql

Posted by a reviewer on Amazon

After 5 days i finished this book and felt very comfortable reading writing and interpreting somewhat complex sql statements