TRUNCATE¶
Name
TRUNCATE -- empty a table
Synopsis
TRUNCATE TABLE <name> [DROP STORAGE]
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.
The DROP STORAGE clause is accepted for compatibility, but is ignored.
Parameters
name
The name (optionally schema-qualified) of the table to be truncated.
Notes
TRUNCATE cannot be used if there are foreign-key references to the table
from other tables. Checking validity in such cases would require table
scans, and the whole point is not to do one.
TRUNCATE will not run any user-defined ON DELETE triggers that might
exist for the table.
Examples
The following command truncates a table named accounts:
TRUNCATE TABLE accounts;
See Also
