Discussion
Which of the following is not true about modifying table columns?
Answer: D
Correct answer: You cannot increase or decrease the number of decimal places.
This is the statement that is untrue: the scale of a numeric column can be altered, subject to the existing data fitting. The other three hold - a column may be dropped, a column may be added provided it allows nulls or a default is supplied, and character length and numeric precision may be increased freely.
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