What is the difference between Delete, Truncate and Drop commands?

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[@touseefghazanfar8487]

One more difference.
TRUNCATE command reset the identity to its seed value. But DELETE retains the identity and does not reset it to the seed value.

[@kathiranbuu5786]

If you use the truncate command data cannot be rollback.
Truncate is a DDL command , it's autocommit.

[@saroshfaisalkhan3531]

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[@interviewhappy]

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[@saroshfaisalkhan3531]

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[@pallavipawankar9705]

Hi Happy...I have one query, if we write Truncate and Drop statements in transaction. Can it be rollbacked?

[@shubhamvarode6962]

Truncate can not Rollback
Rollback operation we can not perfrom in Truncate
Because Truncate is AutoCommit

[@KushKumar-ig9ub]

If we write Command "Delete from Table_name;" Or "Drop Table Table_name;" Then what will be the difference and which one to prefer and why?

[@interviewhappy]

Hi Kush, if you write delete then the whole data/ records will be deleted but the table structure will remain there. You can write insert command to put data back. But if you drop then table structure will be gone also. You have to recreate the table again and then insert data there.

[@KushKumar-ig9ub]

@@interviewhappy soryy i meant Truncate table Table_name
This query and delete

[@KushKumar-ig9ub]

I mean difference between delete and truncate command without where clause in delete command

[@interviewhappy]

@@KushKumar-ig9ub without where only two differences. Truncate can't be rollbacked. You run it and all data is gone. Delete can be rollbacked. Truncates is fast and its a DDL. Delete is slow and DML. It is recommended to use delete.

[@sreedharreddy205]

@interviewhappy but in the video you mentioned truncate also can be rollback .