truncate(7)
NAME
TRUNCATE - empty a table or set of tables
SYNOPSIS
TRUNCATE [ TABLE ] name [, ...]
DESCRIPTION
TRUNCATE quickly removes all rows from a set of tables. It has the same
effect as an unqualified DELETE on each table, but since it does not
actually scan the tables it is faster. This is most useful on large
tables.
PARAMETERS
- name The name (optionally schema-qualified) of a table to be trun
- cated.
NOTES
Only the owner of a table may TRUNCATE it.
TRUNCATE cannot be used on a table that has foreign-key references from
other tables, unless all such tables are also truncated in the same
command. 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 tables.
EXAMPLES
Truncate the tables bigtable and fattable:
TRUNCATE TABLE bigtable, fattable;
COMPATIBILITY
- There is no TRUNCATE command in the SQL standard.