---
title: "TRUNCATE Statements"
weight: 8
type: docs
aliases:
- /dev/table/sql/truncate.html
---
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# TRUNCATE Statements

{{< label Batch >}}

TRUNCATE statements are used to delete all rows from a table without dropping the table itself.

<span class="label label-danger">Attention</span> Currently, `TRUNCATE` statement is supported in batch mode, and it requires the target table connector implements the  {{< gh_link file="flink-table/flink-table-common/src/main/java/org/apache/flink/table/connector/sink/abilities/SupportsTruncate.java" name="SupportsTruncate" >}}
interface to support the row-level delete. An exception will be thrown if trying to `TRUNCATE` a table which has not implemented the related interface.


## Run a TRUNCATE statement

{{< tabs "truncate" >}}
{{< tab "Java" >}}
TRUNCATE statement can be executed with the `executeSql()` method of the `TableEnvironment`. The `executeSql()` method will throw an exception when there is any error for the operation.

The following examples show how to run a TRUNCATE statement in `TableEnvironment`.
{{< /tab >}}
{{< tab "Scala" >}}

TRUNCATE statements can be executed with the `executeSql()` method of the `TableEnvironment`. The `executeSql()` will throw an exception when there is any error for the operation.

The following examples show how to run a single TRUNCATE statement in `TableEnvironment`.
{{< /tab >}}
{{< tab "Python" >}}

TRUNCATE statements can be executed with the `execute_sql()` method of the `TableEnvironment`. The `execute_sql()` will throw an exception when there is any error for the operation.

The following examples show how to run a single TRUNCATE statement in `TableEnvironment`.

{{< /tab >}}
{{< tab "SQL CLI" >}}

TRUNCATE statement can be executed in [SQL CLI]({{< ref "docs/dev/table/sqlClient" >}}).

The following examples show how to run a TRUNCATE statement in SQL CLI.

{{< /tab >}}
{{< /tabs >}}

{{< tabs "a5de1760-e363-4b8d-9d6f-0bacb35b9dcf" >}}
{{< tab "Java" >}}
```java
EnvironmentSettings settings = EnvironmentSettings.newInstance().inBatchMode().build();
TableEnvironment tEnv = TableEnvironment.create(settings);

// register a table named "Orders"
tEnv.executeSql("CREATE TABLE Orders (`user` STRING, product STRING, amount INT) WITH (...)");

// insert values
tEnv.executeSql("INSERT INTO Orders VALUES ('Lili', 'Apple', 1), ('Jessica', 'Banana', 2), ('Mr.White', 'Chicken', 3)").await();
tEnv.executeSql("SELECT * FROM Orders").print();
// +--------------------------------+--------------------------------+-------------+
// |                           user |                        product |      amount |
// +--------------------------------+--------------------------------+-------------+
// |                           Lili |                          Apple |           1 |
// |                        Jessica |                         Banana |           2 |
// |                       Mr.White |                        Chicken |           3 |
// +--------------------------------+--------------------------------+-------------+
// 3 rows in set
        
// truncate the table "Orders"
tEnv.executeSql("TRUNCATE TABLE Orders").await();
tEnv.executeSql("SELECT * FROM Orders").print();
// Empty set
```
{{< /tab >}}
{{< tab "Scala" >}}
```scala
val env = StreamExecutionEnvironment.getExecutionEnvironment()
val settings = EnvironmentSettings.newInstance().inBatchMode().build()
val tEnv = StreamTableEnvironment.create(env, settings)

// register a table named "Orders"
tEnv.executeSql("CREATE TABLE Orders (`user` STRING, product STRING, amount INT) WITH (...)")
// insert values
tEnv.executeSql("INSERT INTO Orders VALUES ('Lili', 'Apple', 1), ('Jessica', 'Banana', 2), ('Mr.White', 'Chicken', 3)").await()
tEnv.executeSql("SELECT * FROM Orders").print()
// +--------------------------------+--------------------------------+-------------+
// |                           user |                        product |      amount |
// +--------------------------------+--------------------------------+-------------+
// |                           Lili |                          Apple |           1 |
// |                        Jessica |                         Banana |           2 |
// |                       Mr.White |                        Chicken |           3 |
// +--------------------------------+--------------------------------+-------------+
// 3 rows in set
// truncate the table "Orders"
tEnv.executeSql("TRUNCATE TABLE Orders").await()
tEnv.executeSql("SELECT * FROM Orders").print()
// Empty set
```
{{< /tab >}}
{{< tab "Python" >}}
```python
env_settings = EnvironmentSettings.in_batch_mode()
table_env = TableEnvironment.create(env_settings)

# register a table named "Orders"
table_env.execute_sql("CREATE TABLE Orders (`user` STRING, product STRING, amount INT) WITH (...)")
# insert values
table_env.execute_sql("INSERT INTO Orders VALUES ('Lili', 'Apple', 1), ('Jessica', 'Banana', 2), ('Mr.White', 'Chicken', 3)").wait()
table_env.execute_sql("SELECT * FROM Orders").print()
# +--------------------------------+--------------------------------+-------------+
# |                           user |                        product |      amount |
# +--------------------------------+--------------------------------+-------------+
# |                           Lili |                          Apple |           1 |
# |                        Jessica |                         Banana |           2 |
# |                       Mr.White |                        Chicken |           3 |
# +--------------------------------+--------------------------------+-------------+
# 3 rows in set
# truncate the table "Orders"
table_env.execute_sql("TRUNCATE TABLE Orders").wait()
table_env.execute_sql("SELECT * FROM Orders").print()
# Empty set
```
{{< /tab >}}
{{< tab "SQL CLI" >}}
```sql
Flink SQL> SET 'execution.runtime-mode' = 'batch';
[INFO] Session property has been set.

Flink SQL> CREATE TABLE Orders (`user` STRING, product STRING, amount INT) with (...);
[INFO] Execute statement succeeded.

Flink SQL> INSERT INTO Orders VALUES ('Lili', 'Apple', 1), ('Jessica', 'Banana', 1), ('Mr.White', 'Chicken', 3);
[INFO] Submitting SQL update statement to the cluster...
[INFO] SQL update statement has been successfully submitted to the cluster:
Job ID: bd2c46a7b2769d5c559abd73ecde82e9

Flink SQL> SELECT * FROM Orders;
    user                         product      amount
    Lili                           Apple           1
 Jessica                          Banana           2
Mr.White                         Chicken           3

Flink SQL> TRUNCATE TABLE Orders;
[INFO] Execute statement succeeded.

Flink SQL> SELECT * FROM Orders;
// Empty set
```
{{< /tab >}}
{{< /tabs >}}

{{< top >}}

## Syntax

```sql
TRUNCATE TABLE [catalog_name.][db_name.]table_name
```
