Which SQL statement is used to remove a unique constraint from a column?OptionsREMOVE UNIQUEALTER TABLEMODIFY COLUMNDROP CONSTRAINT

The SQL statement used to remove a unique constraint from a column is ALTER TABLE combined with DROP CONSTRAINT. Here is a step by step guide on how to do it:

1. Identify the table and the constraint: Before you can remove a constraint, you need to know the name of the table and the constraint.

2. Use the ALTER TABLE statement: This is used to add, delete/drop or modify columns in an existing table. It is also used to add and drop various constraints on an existing table.

3. Use the DROP CONSTRAINT statement: This is used to drop a constraint from a table.

4. Combine ALTER TABLE and DROP CONSTRAINT: To remove a unique constraint, you would use these two statements together.

Here is an example:

ALTER TABLE table_name
DROP CONSTRAINT constraint_name;

Replace table_name with the name of your table and constraint_name with the name of the unique constraint you want to remove.

Please note that you need to have the appropriate privileges to execute this statement.