TRUNCATE TABLE

Description

This statement is used to truncate the specified table and partition data.

Syntax:

TRUNCATE TABLE [db.]tbl[ PARTITION(p1, p2, ...)];

Note:

1. This statement is used to truncate data while retaining tables or partitions.
2. Unlike DELETE, this statement can only empty the specified tables or partitions as a whole, and filtering conditions cannot be added.
3. Unlike DELETE, using this method to clear data will not affect query performance.
4. The data deleted by this operation cannot be recovered.
5. When using this command, the table state should be NORMAL, i.e. SCHEMA CHANGE operations are not allowed.

Examples

1. Truncate table tbl under example_db.

   TRUNCATE TABLE example_db.tbl;

2. Truncate partition p1 and p2 under table tbl.

   TRUNCATE TABLE tbl PARTITION(p1, p2);