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I have a table that has a phone number column defined as – be ready – a FLOAT!
I want to change that to a varchar.
My questions is, can I just change the type on the fly, or do I have to create another column and then copy/convert (that second option would disrupt certain pieces of code that are already using the current column, and it may be a challenge to find them all).
Thanks!
I think you need to add the new column and copy the existing data and then remove the old column.