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supabase/apps/temp-docs/docs/reference/dart/rpc.mdx
2022-04-26 14:17:19 +02:00

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---
id: rpc
title: "Stored Procedures: rpc()"
slug: rpc
custom_edit_url: https://github.com/supabase/supabase/edit/master/web/spec/dart.yml
---
import Tabs from '@theme/Tabs';
import TabsPanel from '@theme/TabsPanel';
You can call stored procedures as a "Remote Procedure Call".
That's a fancy way of saying that you can put some logic into your database then call it from anywhere.
It's especially useful when the logic rarely changes - like password resets and updates.
<Tabs
defaultActiveId="dart"
groupId="reference/dart"
values={[{ label: 'Dart', value: 'dart' }]}>
<TabsPanel id="dart" label="dart">
```dart
final res = await supabase
.rpc('hello_world')
.execute();
```
</TabsPanel>
</Tabs>
## Examples
### Call a stored procedure
This is an example invoking a stored procedure.
<Tabs
defaultActiveId="dart"
groupId="reference/dart"
values={[{ label: 'Dart', value: 'dart' }]}>
<TabsPanel id="dart" label="dart">
```dart
final res = await supabase
.rpc('hello_world')
.execute();
```
</TabsPanel>
</Tabs>
### With Parameters
<Tabs
defaultActiveId="dart"
groupId="reference/dart"
values={[{ label: 'Dart', value: 'dart' }]}>
<TabsPanel id="dart" label="dart">
```dart
final res = await supabase
.rpc('echo_city', params: { 'name': 'The Shire' })
.execute();
```
</TabsPanel>
</Tabs>
### With count option
You can specify a count option to get the row count along with your data.
Allowed values for count option are `exact`, `planned` and `estimated`.
<Tabs
defaultActiveId="dart"
groupId="reference/dart"
values={[{ label: 'Dart', value: 'dart' }]}>
<TabsPanel id="dart" label="dart">
```dart
final res = await supabase
.rpc('hello_world')
.execute(count: CountOption.exact);
```
</TabsPanel>
</Tabs>