Which of the Following Commands Will Drop Any Columns Marked

question 28

Multiple Choice

Which of the following commands will drop any columns marked as unused from the TABLEA table?​

• A) ​DROP COLUMN FROM tablea WHERE column_status = UNUSED;
• B) ​ALTER TABLE tablea DROP UNUSED COLUMNS;
• C) ​ALTER TABLE tablea DROP (unused);
• D) ​DROP UNUSED COLUMNS:

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