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TRUNCATE
Name
TRUNCATE -- empty a table
Synopsis
TRUNCATE [ TABLE ] name
Inputs
- name
-
The name (optionally schema-qualified) of the table to
be truncated.
Outputs
- TRUNCATE TABLE
-
Message returned if the table is successfully
truncated.
Description
TRUNCATE quickly removes all rows
from a table. It has the same effect as an unqualified DELETE but since it does not actually scan the
table it is faster. This is most useful on large tables.
TRUNCATE cannot be executed inside a
transaction block (BEGIN/COMMIT pair), because there is no way to roll it
back.
Usage
Truncate the table bigtable:
TRUNCATE TABLE bigtable;
Compatibility
SQL92
There is no TRUNCATE in
SQL92.