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Is TRUNCATE and delete same?
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.
Does TRUNCATE mean delete?
SQL Truncate is a data definition language (DDL) command. It removes all rows in a table. SQL Server stores data of a table in the pages. The truncate command deletes rows by deallocating the pages.
What is delete DROP and TRUNCATE?
The DROP command removes a table from the database. All the tables’ rows, indexes, and privileges will also be removed. DROP and TRUNCATE are DDL commands, whereas DELETE is a DML command. DELETE operations can be rolled back (undone), while DROP and TRUNCATE operations cannot be rolled back.
What’s the difference between a truncate and a delete?
TRUNCATE : TRUNCATE is a DDL (Data Definition Language) command and is used to delete all the rows or tuples from a table. Unlike the DELETE command, TRUNCATE command does not contain a WHERE clause. In the TRUNCATE command, the transaction log for each deleted data page is recorded.
How long does it take to delete a TRUNCATE TABLE?
TRUNCATE TABLE is basically instantaneous, regardless of the number of records in the table. Using DELETE on a table with tens of millions of records can take hours, meaning that you may be unable to complete the deletion in an overnight maintenance window.
How does the truncate command work in SQL Server?
SQL Truncate is a data definition language (DDL) command. It removes all rows in a table. SQL Server stores data of a table in the pages. The truncate command deletes rows by deallocating the pages. It makes an entry for the de-allocation of pages in the transaction log.
Is there a where clause in a TRUNCATE TABLE?
You cannot specify a WHERE clause in a TRUNCATE TABLE statement, it is all or nothing. The advantage to using TRUNCATE TABLE is that in addition to removing all rows from the table it resets the IDENTITY back to the SEED, and the deallocated pages are returned to the system for use in other areas.