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# ICONTAINS



#### Syntax {#syntax}


```
ICONTAINS( string, substring )
```

#### Description {#description}
Case-insensitive version of [CONTAINS](CONTAINS.md). Returns `TRUE` if `string` contains `substring`.

**Argument types:**
- `string` — `Boolean | Date | Datetime | Fractional number | Geopoint | Geopolygon | Integer | String | UUID`
- `substring` — `String`


**Return type**: `Boolean`

#### Examples {#examples}

```
ICONTAINS("RU0891923", "ru") = TRUE
```

```
ICONTAINS("Lorem ipsum", "abc") = FALSE
```


#### Data source support {#data-source-support}

`ClickHouse 21.8`, `Files`, `Google Sheets`, `Microsoft SQL Server 2017 (14.0)`, `MySQL 5.7`, `Oracle Database 12c (12.1)`, `PostgreSQL 9.3`, `Trino`, `Yandex Documents`, `YDB`.