TRUNCATE
The TRUNCATE statement removes all data from the table in a non-transactional way. TRUNCATE can be thought of as semantically the same as DROP TABLE + CREATE TABLE with the previous definition.
Both TRUNCATE TABLE tableName and TRUNCATE tableName are valid syntax.
Synopsis
TruncateTableStmt:
OptTable:
TableName:
Examples
mysql> CREATE TABLE t1 (a INT NOT NULL PRIMARY KEY);
Query OK, 0 rows affected (0.11 sec)
mysql> INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
Query OK, 5 rows affected (0.01 sec)
Records: 5 Duplicates: 0 Warnings: 0
mysql> SELECT * FROM t1;
+---+
| a |
+---+
| 1 |
| 2 |
| 3 |
| 4 |
| 5 |
+---+
5 rows in set (0.00 sec)
mysql> TRUNCATE t1;
Query OK, 0 rows affected (0.11 sec)
mysql> SELECT * FROM t1;
Empty set (0.00 sec)
mysql> INSERT INTO t1 VALUES (1),(2),(3),(4),(5);
Query OK, 5 rows affected (0.01 sec)
Records: 5 Duplicates: 0 Warnings: 0
mysql> TRUNCATE TABLE t1;
Query OK, 0 rows affected (0.11 sec)
MySQL compatibility
The TRUNCATE statement in TiDB is fully compatible with MySQL. If you find any compatibility differences, report a bug.