Hello!
In documentation ( http://docs.oracle.com/cd/E11882_01/server.112/e26088/functions181.htm ) I see following
Assume a double-byte database character set::
SELECT SUBSTRB('ABCDEFG',5,4.2) "Substring with bytes" FROM DUAL;
Substring with bytes
--------------------
CD
In my case
> select version from v$instance;
VERSION
-----------------
11.1.0.6.0
SELECT SUBSTRB('ABCDEFG',5,4.2) "Substring with bytes" FROM DUAL;
Sub
---
EFG
SELECT SUBSTRB('ABCDEFG',5,4.2) "Substring with bytes" FROM DUAL;
Sub
---
EFG
select * from NLS_DATABASE_PARAMETERS;
PARAMETER VALUE
------------------------------ ----------------------------------------
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CHARACTERSET CL8MSWIN1251
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_RDBMS_VERSION 11.1.0.6.0
Please explain
Thanks and best regards,
Pavel