UNION and UNION ALL are used for joining two or more datasets together. The datasets need to return the same number of columns. The columns names of all datasets can be different, however, the final results will have their columns...
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UNION and UNION ALL are used for joining two or more datasets together. The datasets need to return the same number of columns. The columns names of all datasets can be different, however, the final results will have their columns...
Read More