How do I change all empty strings to NULL in a table?

Question

I have a legacy table with about 100 columns (90% nullable). In those 90 columns I want to remove all empty strings and set them to null. I know I can:

updat         


        

Answer 1

I think you'll need to pull each row into a language like C#, php, etc.

Something like:

rows = get-data()
foreach row in rows
    foreach col in row.cols
        if col == ''
            col = null
        end if
    next
next
save-data()