what's the size of a date field?

From: elain he <elainhe_at_hotmail.com>
Date: Mon, 06 Oct 2003 10:44:24 -0800
Message-ID: <F001.005D22D5.20031006104424@fatcity.com>

Hi,
I'm trying to figure out the size (in bytes) of a DATE column. Executing the three queries below returned me three different values. Is there any way of finding the size of a date column in the database?

Thanks.

elain

select * from testing;
DOB

---

06-OCT-03 desc testing
Name Null? Type

---

• ------------- DOB DATE

select avg_row_len from user_tables where table_name='TESTING'; AVG_ROW_LEN

---

         11

select data_length from dba_Tab_columns where table_name='TESTING'; DATA_LENGTH

---

          7

select length (timestamp) from abc;
LENGTH(TIMESTAMP)

---

                9

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Author: elain he
  INET: elainhe_at_hotmail.com

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