Re: BYTE OR CHAR LENGTH Semantics
- From: "Norman Dunbar" <norman.dunbar@xxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>, <oracle.tutorials@xxxxxxxxx>
- Date: Mon, 21 May 2007 13:50:45 +0100
>> How to know whether a table column has been create using BYTE or CHAR
length
>> semantics?
Does this help :
SQL> create table norman(a_byte varchar2(100 byte),
2 a_char varchar2(100 char));
Table created.
SQL> desc norman;
Name Null? Type
----------------------------------------- --------
----------------------------
A_BYTE VARCHAR2(100)
A_CHAR VARCHAR2(100 CHAR)
SQL> select column_name,char_length,char_used
2 from user_tab_columns
3 where table_name = 'NORMAN';
COLUMN_NAME CHAR_LENGTH C
------------------------------ ----------- -
A_BYTE 100 B
A_CHAR 100 C
So, the CHAR_USED column in user_tab_columns is where to find out.
Cheers,
Norman.
Norman Dunbar.
Contract Oracle DBA.
Rivers House, Leeds.
Internal : 7 28 2051
External : 0113 231 2051
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