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thegingercoffee thegingercoffee
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6 years ago
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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6 years ago
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