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Added NLS_UPPER function as per DOCS-295
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nidhibhammar committed Apr 18, 2024
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---
title: "NLS_UPPER function"
---

`NLS_UPPER` returns char with all letters in uppercase.

```sql
NLS_UPPER(char [, 'nlsparam'])
```

where char and 'nlsparam' can be any of the data types like CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB. The returned string is of VARCHAR2 data type if char is a character datatype and a LOB if char is a LOB data type. The return string is in the same character set as char.

## Examples

```sql
SELECT nls_upper('abcDef', 'NLS_SORT = XGERMAN');
__OUTPUT__
nls_upper
-----------
ABCDEF
(1 row)
```

```sql
SELECT nls_upper('Gloße', 'NLS_SORT = XDANISH');
__OUTPUT__
nls_upper
-----------
GLOSSE
(1 row)
```

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