Purpose
TRANSLATE ... USING() converts a string into a specified database character set or national character set.
Syntax
TRANSLATE(char USING{ CHAR_CS | NCHAR_CS })
Parameters
| Parameter | Description |
|---|---|
| char | The string to be converted. It can be of the CHAR, VARCHAR2, NCHAR, NVARCHAR2, or CLOB data type. |
| CHAR_CS | Specifies that the source string is to be converted into the database character set. |
| NCHAR_CS | Specifies that the source string is to be converted into the national character set. |
Return type
If you specify
CHAR_CS, the return type isVARCHAR2.If you specify
NCHAR_CS, the return type isNVARCHAR2.
Examples
The following example converts the string OceanBase to the VARCHAR2 and NVARCHAR2 data types and returns the lengths of the strings in bytes.
obclient> SELECT LENGTHB(TRANSLATE('OceanBase' USING CHAR_CS)) "VARCHAR2",
LENGTHB(TRANSLATE('OceanBase' USING NCHAR_CS)) "NVARCHAR2"
FROM DUAL;
+----------+-----------+
| VARCHAR2 | NVARCHAR2 |
+----------+-----------+
| 9 | 18 |
+----------+-----------+
1 row in set
