CHR

Returns a character string with the first character having an ASCII value equal to the argument expression.

Syntax

CHR ( integer_expression )

Notes

The argument to the function must be of type INTEGER, TINYINT, or SMALLINT.

The result is of type CHARACTER.

If the argument integer_expression evaluates to NULL, the result is NULL.

The CHR and CHAR functions are character‑set dependent, and support multi‑byte characters. If integer_expression is a valid character encoding integer value in the current SQL server character set, the function returns the correct character. If it is not a valid character the function returns a NULL value.

Example

This example illustrates the CHR function and the SUBSTR (substring) function:

SELECT *
FROM customer
WHERE SUBSTR (zip, 1, 1) = CHR (53) ;

Compatibility

Progress extension