create 'test', 'cf'
put 'test', 'row1', 'cf:col1', 'value1'
put 'test', 'row2', 'cf:col1', 'value2'
put 'test', 'row3', 'cf:col1', 'value3'

create 'test', 'cf'
put 'test', 'row1', 'cf:col1', 'value1'
put 'test', 'row2', 'cf:col1', 'value2'
put 'test', 'row3', 'cf:col2', 'value3'

Move value3 to another column in the same CF.
Move value3 to another column in the same CF.