4 ms·

Please share how many lines of sql it will take to statistically normalize multiple columns. Or even something simple like null cleaning columns based on dynami

• 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 ago
    That'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.