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A case-transformation function that converts all uppercase letters in a string to lowercase letters.



{fn LCASE(string-expression)}


LCASE converts uppercase letters to lowercase for display purposes. It has no effects on non-alphabetic characters. It leaves unchanged punctuation and leading and trailing blank spaces.

LCASE does not force numerics to be interpreted as a string. InterSystems SQL converts numerics to canonical form, removing leading and trailing zeros. InterSystems SQL does not convert numeric strings to canonical form.

The LOWER function can also be used convert uppercase letters to lowercase.

LCASE does not affect collation. The %SQLUPPER function is the preferred way in SQL to convert a data value for not case-sensitive collation. Refer to %SQLUPPER for further information on case transformation for collation.



The string expression whose characters are to be converted to lowercase. The expression can be the name of a column, a string literal, or the result of another scalar function, where the underlying data type can be represented as any character type (such as CHAR or VARCHAR).


The following example returns each person’s name in lowercase letters:

SELECT TOP 10 Name,{fn LCASE(Name)} AS LowName
     FROM Sample.Person

LCASE also works on Unicode (non-ASCII) alphabetic characters, as shown in the following example, which converts Greek letters from uppercase to lowercase:

SELECT LCASE($CHAR(920,913,923,913,931,931,913))

See Also

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