date and timestamp data type lengths

Hello

Documentation, says the following:

: Date parameter valid [...]. The size is fixed to 7 bytes. This data type contains the datetime fields YEAR, MONTH, DAY, HOUR, MINUTE, and SECOND. There can be no fractions of a second or a zone.

TIMESTAMP [(fractional_seconds_precision)]
Year, [...] setting. The size is 7 or 11 bytes, depending on the precision. This data type contains the datetime fields YEAR, MONTH, DAY, HOUR, MINUTE, and SECOND. It contains fractions of a second, but does not have a time zone.

However, if I create a table as follows:

create table t9 (timestamp (3) c1, c2 date);

and do:

insert into values t9 (systimestamp, sysdate);
commit;

Select length (c1), (c2) length, lengthb (c1), (c2) lengthb of t9.

I get


LENGTH (C1) (C2) LENGTH LENGTHB (C1) (C2) LENGTHB
---------- ---------- ----------- -----------
21 8 21 8

Can someone please explain this to me?

Thank you

I think you want to do this to check the time.

ME_XE?select dump(c1) as c1, dump(c2) as c2 from t9;

C1                             C2
------------------------------ ------------------------------
Typ=180 Len=11: 120,110,4,19,1 Typ=12 Len=7: 120,110,4,19,16,
6,30,31,13,105,58,64           30,31

1 row selected.

Elapsed: 00:00:00.17
ME_XE?

Tags: Database

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