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supabase/apps/reference/_supabase_js/generated/containedby.mdx
2022-08-18 15:54:30 +08:00

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---
id: containedby
title: '.containedBy()'
slug: /containedby
custom_edit_url: https://github.com/supabase/supabase/edit/master/spec/supabase_js_v2_legacy.yml
---
import Tabs from '@theme/Tabs'
import TabItem from '@theme/TabItem'
Finds all rows whose json, array, or range value on the stated `column` is
contained by the specified `value`.
```js
const { data, error } = await supabase
.from('countries')
.select('name, id, main_exports')
.containedBy('main_exports', ['cars', 'food', 'machine'])
```
## Parameters
<ul className="method-list-group">
<li className="method-list-item">
<h4 className="method-list-item-label">
<span className="method-list-item-label-name">
column
</span>
<span className="method-list-item-label-badge required">
required
</span>
<span className="method-list-item-validation">
<code>ColumnName</code>
</span>
</h4>
<div class="method-list-item-description">
The column to filter on.
</div>
</li>
<li className="method-list-item">
<h4 className="method-list-item-label">
<span className="method-list-item-label-name">
value
</span>
<span className="method-list-item-label-badge required">
required
</span>
<span className="method-list-item-validation">
<code>string</code> | <code>Record</code> | <code>array</code>
</span>
</h4>
<div class="method-list-item-description">
The value to filter with.
</div>
</li>
</ul>
## Notes
- `.containedBy()` can work on array columns or range columns.
```js
.containedBy('arraycol',["a","b"]) // You can use a javascript array for an array column
.containedBy('arraycol','{"a","b"}') // You can use a string with Postgres array {} for array column.
.containedBy('rangecol','(1,2]') // Use Postgres range syntax for range column.
.containedBy('rangecol',`(${arr}]`) // You can insert an array into a string.
```
## Examples
### With `select()`
```js
const { data, error } = await supabase
.from('countries')
.select('name, id, main_exports')
.containedBy('main_exports', ['cars', 'food', 'machine'])
```
### With `update()`
```js
const { data, error } = await supabase
.from('countries')
.update({ name: 'Mordor' })
.containedBy('main_exports', ['orks', 'surveillance', 'evil'])
```
### With `delete()`
```js
const { data, error } = await supabase
.from('countries')
.delete()
.containedBy('main_exports', ['cars', 'food', 'machine'])
```
### With `rpc()`
```js
// Only valid if the Postgres function returns a table type.
const { data, error } = await supabase
.rpc('echo_all_countries')
.containedBy('main_exports', ['cars', 'food', 'machine'])
```