• Version 4.0 and earlier: tolower() function not available.
  • Version 5.0 and later: tolower() function available.

The tolower() function returns a copy of a string, converted to all lowercase.

The tolower() function supports both single-byte and multiple-byte character sets. If the character set for the locale does not distinguish uppercase and lowercase characters, the original string is returned unchanged.

tolower (string)


Required. The string to convert to lowercase.

A string that contains a lowercase copy of the argument.

result = tolower (variableName);
result = tolower("String Constant");

For more information, please see toupper.