Returns a unichar expression having the value of the specified integer expression.
to_unichar(integer_expr)
is any integer (tinyint, smallint, or int) column name, variable, or constant expression.
to_unichar, a string function, converts a Unicode integer value to a Unicode character value.
If a unichar expression refers to only half of a surrogate pair, an error message appears and the operation is aborted.
If a integer_expr is NULL, to_unichar returns NULL.
ANSI SQL – Compliance level: Transact-SQL extension.
Any user can execute to_unichar.
Datatypes text, image, and unitext datatypes
Documentation Transact-SQL Users Guide
Function char