# UPPER

Convertit la chaîne en lettres majuscules.

## Syntaxe

```
UPPER(STRING)
```

## Arguments

#### STRING

Type : `string`

Séquence de caractères.

## Renvoie

Type : `string`

`STRING` en lettres majuscules.

***

## Exemples

> SELECT UPPER("a") = "A" AND UPPER("abc") = "ABC" AND UPPER("123") = "123" AND UPPER("abc") = "ABC" AND UPPER('-=@#$') = "-=@#$" AND UPPER(null) is null AND UPPER(CAST(null as varchar)) is null

| STRING | Sortie |
| --- | --- |
| a | A |
| abc | ABC |
| 123 | 123 |
| abc | ABC |
| -=@#$ | -=@#$ |
| `null` | `null` |