What is the difference between DELETE and TRUNCATE statements?

What is the difference between DELETE and TRUNCATE statements?
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1 Answer

Answer :

The DELETE command is used to remove rows from a table. A WHERE clause can be used to only remove some  rows.
If no WHERE condition is specified, all rows will be removed. After performing a DELETE operation you need to  COMMIT or ROLLBACK the transaction to make the change permanent or to undo it.
DELETE will cause all DELETE triggers on the table to fire.
TRUNCATE removes all rows from a table. A WHERE clause is not permited. The operation cannot be rolled back  and no triggers will be fired.
As such, TRUCATE is faster and doesn't use as much undo space as a DELETE.
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