3 ms·
For normalization, for instance : Select stddev(col1)/avg(col1), stddev(col2)/avg(col2),... from mytable group by key. One line.
by ontologiae 4y ago
For normalization, for instance :
Select stddev(col1)/avg(col1), stddev(col2)/avg(col2),... from mytable group by key.
One line.
- nojito 4y agoThat's just a handful of columns. You have to manually type out each and every arrangement. Add in if you want the new columns to be added in place and you have to bring in window functions.