Difference between Delete and truncate in sql query

Delete and truncate both commands can be used to delete data of the table.

Delete is a DML command whereas truncate is DDL command. Truncate can be used to delete the entire data of the table without maintaining the integrity of the table. On the other hand , delete statement can be used for deleting the specific data. With delete command we can’t bypass the integrity enforcing mechanisms.

Sr. No.	Key	Delete	Truncate
1	Basic	It is used to delete specific data	It is used to delete the entire data of the table
2	Where clause	We can use with where clause	It can’t be used with where clause
3	Locking	It locks the table row before deleting the row	It locks the entire table
4	Rollback	We can rollback the changes.	We can’t rollback the changes
5	Performance	It is slower than truncate	It is faster than delete

Example of Truncate and Delete

//TRUNCATE Query
TRUNCATE TABLE tableName;
//Delete
DELETE FROM tableName WHERE condition;

Himanshu shriv

Published on 21-Jan-2020 09:36:56

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