Oracle NLS_LOWER function

Last update on August 19 2022 21:50:41 (UTC/GMT +8 hours)

Description

The Oracle NLS_LOWER() function returns a specified character expression in lowercase letters.

Note: National Language Support (NLS) is a technology enabling Oracle applications to interact with users in their native language, using their conventions for displaying data.

Syntax:

NLS_LOWER(string1 [, 'nlsparam' ])

Parameters:

Name	Description	Data Types
string1	A string whose first character in each word will be converted to uppercase and the rest characters will be converted to lowercase.	CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB
nlsparam	The value of 'nlsparam' can have this form : 'NLS_SORT = sort' where sort is either a linguistic sort sequence or BINARY. The linguistic sort sequence handles special linguistic requirements for case conversions. These requirements can result in a return value of a different length than the char. If you omit 'nlsparam', then this function uses the default sort sequence for your session.

Return Value Type:

CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB

Examples: Oracle NLS_LOWER function

The following statement returns the lowercase form of the character string 'W3RESOURCE'.

SQL> SELECT NLS_LOWER('W3RESOURCE') "Lowercase" FROM DUAL;

Lowercase
----------
w3resource

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