How to query SQL Table and remove duplicate rows from a result set

Question

I know this is simple...

Please advise on how I can get a result set of rows 1, 9, 18, and 21 (based on the attached image)??

Thanks,

Brad

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Answer 1

Since there exists a redundant data in your table you can use the following approach:-

Create a temp table (with same schema as of your attached image table) and execute this query:-

Insert into [temptable]
Select [all column names] from [table]
union
Select [all column names] from [table]

afterwards you can truncate data from your original table and then do insert from temptable to original table.