Oracle® Database SQL Reference 10g Release 1 (10.1) Part Number B10759-01 |
|
|
View PDF |
TO_SINGLE_BYTE
returns char
with all of its multibyte characters converted to their corresponding single-byte characters. char
can be of datatype CHAR
, VARCHAR2
, NCHAR
, or NVARCHAR2
. The value returned is in the same datatype as char
.
Any multibyte characters in char
that have no single-byte equivalents appear in the output as multibyte characters. This function is useful only if your database character set contains both single-byte and multibyte characters.
This function does not support CLOB
data directly. However, CLOB
s can be passed in as arguments through implicit data conversion.
The following example illustrates going from a multibyte A
in UTF8 to a single byte ASCII A
:
SELECT TO_SINGLE_BYTE( CHR(15711393)) FROM DUAL; T - A