Question

I am looking for something similar to

UPDATE table 
SET field = REPLACE(field, "findstring", "replacestring");

with a modifier for location.

I need to replace, for example:

Remove “,friday” from fields containing: wednesday,thursday,friday

While not changing fields containing: thursday,friday,saturday

And also, if possible, same situation with the needle at the beginning of the field.

Answer 1

You can do this without a replace . . .

UPDATE table
SET field = (case when right(field, 7) = ',Friday'
                  then left(field, len(field) - 7)
                  else field
             end)


UPDATE table
SET field = (case when left(field, 7) = 'Friday,'
                  then right(field, len(field) - 7)
                  else field
             end)