---
title: "UNLOAD Statements"
weight: 13
type: docs
aliases:
  - /docs/sql/reference/unload/
  - /dev/table/sql/unload.html
---
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# UNLOAD Statements

UNLOAD statements are used to unload a built-in or user-defined module.

## Run a UNLOAD statement

{{< tabs "unload statement" >}}
{{< tab "Java" >}}

UNLOAD statements can be executed with the `executeSql()` method of the `TableEnvironment`. The `executeSql()` method returns 'OK' for a successful UNLOAD operation; otherwise it will throw an exception.

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

{{< /tab >}}
{{< tab "Scala" >}}

UNLOAD statements can be executed with the `executeSql()` method of the `TableEnvironment`. The `executeSql()` method returns 'OK' for a successful UNLOAD operation; otherwise it will throw an exception.

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

UNLOAD statements can be executed with the `execute_sql()` method of the `TableEnvironment`. The `execute_sql()` method returns 'OK' for a successful UNLOAD operation; otherwise it will throw an exception.

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

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

UNLOAD statements can be executed in [SQL CLI]({{< ref "docs/sql/interfaces/sql-client" >}}).

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

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

{{< tabs "unload modules" >}}
{{< tab "Java" >}}
```java
StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
StreamTableEnvironment tEnv = StreamTableEnvironment.create(env);

// unload a core module
tEnv.executeSql("UNLOAD MODULE core");
tEnv.executeSql("SHOW MODULES").print();
// Empty set
```
{{< /tab >}}
{{< tab "Scala" >}}
```scala
val env = StreamExecutionEnvironment.getExecutionEnvironment()
val tEnv = StreamTableEnvironment.create(env)

// unload a core module
tEnv.executeSql("UNLOAD MODULE core")
tEnv.executeSql("SHOW MODULES").print()
// Empty set
```
{{< /tab >}}
{{< tab "Python" >}}
```python
table_env = StreamTableEnvironment.create(...)

# unload a core module
table_env.execute_sql("UNLOAD MODULE core")
table_env.execute_sql("SHOW MODULES").print()
# Empty set
```
{{< /tab >}}
{{< tab "SQL CLI" >}}
```sql
Flink SQL> UNLOAD MODULE core;
[INFO] Unload module succeeded!

Flink SQL> SHOW MODULES;
Empty set
```
{{< /tab >}}
{{< /tabs >}}

{{< top >}}

## UNLOAD MODULE

The following grammar gives an overview of the available syntax:
```sql
UNLOAD MODULE module_name
```
