What is difference between TRUNCATE and DELETE statement
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Answer Posted / mohammed
Guys, Please remember TRUNCATE CAN BE ROLLED BACK.
DELETE TABLE is a logged operation, so the deletion of each
row gets logged in the transaction log, which makes it slow.
TRUNCATE TABLE also deletes all the rows in a table, but it
won't log the deletion of each row, instead it logs the
De-allocation of the data pages of the table, which makes it
faster.
Because TRUNCATE TABLE is not logged, it cannot activate a
trigger.
TRUNCATE can not be Rolled back using logs.
TRUNCATE is DDL Command.
TRUNCATE Resets identity of the table.
DELETE
DELETE removes rows one at a time and records an entry in
the transaction log for each deleted row.
If you want to retain the identity counter, use DELETE
instead. If you want to remove table definition and its
data, use the DROP TABLE statement.
DELETE Can be used with or without a WHERE clause
DELETE Activates Triggers.
DELETE Can be Rolled back using logs.
DELETE is DML Command.
DELETE does not reset identity of the table.
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