date and timestamp data type lengths
HelloDocumentation, 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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Hello
Perhaps you need to dummy data just for the table.
Here is my exercise
create or replace procedure generate_rows(p_table_name varchar2, p_count number) is -- function insert_statement(p_table_name varchar2) return clob is l_columns clob; l_expressions clob; l_sql clob default 'insert into p_table_name (l_columns) select l_expressions from dual connect by level <= :p_count'; begin select -- l_columns listagg(lower(column_name), ',') within group (order by column_id), -- l_expressions listagg( case when data_type = 'DATE' then 'sysdate' when data_type like 'TIMESTAMP%' then 'systimestamp' when data_type = 'NUMBER' then replace('dbms_random.value(1,max)', 'max', nvl(data_precision - data_scale, data_length) ) when data_type = 'VARCHAR2' then replace(q'|dbms_random.string('a',data_length)|', 'data_length', data_length ) else 'NULL' end, ',') within group (order by column_id) into l_columns, l_expressions from user_tab_columns where table_name = upper(p_table_name); -- l_sql := replace(replace(replace(l_sql, 'p_table_name', p_table_name), 'l_columns', l_columns), 'l_expressions', l_expressions); -- debug dbms_output.put_line(l_sql); -- return l_sql; end; begin execute immediate insert_statement(p_table_name) using p_count; end; / -- test create table mytable( id number(4,0), txt varchar2(10), tstz timestamp with time zone, dt date, xml clob ) ; set serveroutput on exec generate_rows('mytable', 10); select id, txt from mytable ; drop procedure generate_rows ; drop table mytable purge ; Procedure GENERATE_ROWS compiled Table MYTABLE created. PL/SQL procedure successfully completed. insert into mytable (id,txt,tstz,dt,xml) select dbms_random.value(1,4),dbms_random.string('a',10),systimestamp,sysdate,NULL from dual connect by level <= :p_count ID TXT ---------- ---------- 3 WnSbyiZRkC 2 UddzkhktLf 1 zwfWigHxUp 2 VlUMPHHotN 3 adGCKDeokj 3 CKAHGfuHAY 2 pqsHrVeHwF 3 FypZMVshxs 3 WtbsJPHMDC 3 TlxYoKbuWp 10 rows selected Procedure GENERATE_ROWS dropped. Table MYTABLE dropped.
and here is the vision of Tom Kyte for the same https://asktom.oracle.com/pls/asktom/f?p=100:11:0:P11_QUESTION_ID:2151576678914
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Hi guys,.
I want to extract information from a column that contains the timestamp data type.
something like that
loged_date between the 09/03/2015 09/03/2015 and 09:00 20:00
and it does not work.
Would be very happy to help.
Hello
SQL lover wrote:
Hi guys,.
I want to extract information from a column that contains the timestamp data type.
something like that
loged_date between the 09/03/2015 09/03/2015 and 09:00 20:00
and it does not work.
Would be very happy to help.
Whenever you have a question, please post a small example data (CREATE TABLE and only relevant columns, INSERT statements) and the exact results you want from this data, so that people who want to help you can recreate the problem and test their ideas.
Explain, using specific examples, how you get these results from these data.
Always say what version of Oracle you are using (for example, 11.2.0.2.0).
See the FAQ forum: Re: 2. How can I ask a question on the forums?
Maybe you want something like:
loged_date between TO_TIMESTAMP (' March 9, 2015 09:00 ")
, ' DD/MM/YYYY HH24:MI:SS.
)
and TO_TIMESTAMP (March 9, 2015 20:00 ')
, ' DD/MM/YYYY HH24:MI:SS.
)
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Hi all
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NightWing wrote:
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SQL > select * from version $ v
BANNER
----------------------------------------------------------------
Oracle Database 10g Release 10.2.0.3.0 - 64 bit Production
PL/SQL version 10.2.0.3.0 - Production
CORE Production 10.2.0.3.0
AMT for Linux: release 10.2.0.3.0 - Production
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Need example of Oracle Interval partitioning on the TIMESTAMP data type of primary key, including the LOCAL INDEX generated by partitioned interval key functional
Published by: oracletune on April 17, 2013 07:51>
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>
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>
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>
The above is YOUR text and is NOT what the doc.The VLDB and partitioning Guide
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>
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>
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Published by: boujemaa on February 2, 2011 21:23http://download.Oracle.com/docs/CD/B19306_01/server.102/b14220/datatype.htm#sthref3780
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CfSQLtype and date type oracle
I have a problem with a SQL Oracle when part of the where clause is:
and INSPECTION_DATE = < cfqueryparam value = "" #Form.INSPECTION_DATE # "cfsqltype = 'cf_sql_DATE' >"
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Please let me know to change the type of data is not possible at this time.
Thank youHello
You will be disappointed because the timestamp columns are not one of the recognized data types supported by the discoverer. He acknowledges only dates, strings and (integer and decimal) numbers.Maybe you could put up a view that matches the table you use, convert the timestamp in a rather ordinary date?
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DATE in TIMESTAMP data type conversion
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My question is this:
1. I have a variable of type DATE, which I attribute the value of SYSDATE
2. I want to find * «today» *, truncated to DATEmydatevar DATE:= SYSDATE;
TRUNC function returns the DATE data type. So I get to the point for example 2 *'2010-01-13 00:00:00 ' *.TRUNC (mydatevar, 'DD')
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implicitly that will convert the variable DATE to TIMESTAMP.mytimestampvar TIMESTAMP := mydatevar;
Problem: when converting (implicit and explicit conversion with a format mask), I lose hours "00" and "00" minutes and receive something like this: "10 January 13 * 12 *. 00.00.000000000 AM.
Question: How can I convert a DATE to TIMESTAMP keeping the hours and minutes zeros?
Why I need this conversion: I have a table with one "column1" TIMESTAMP column (0) and I take only the rows of the table, where 'column1' is in the range of today 12:00 in the morning until now (what time it is).
Features of the database NLS:
Session settings are the same.PARAMETER VALUE NLS_LANGUAGE AMERICAN NLS_TERRITORY AMERICA NLS_CURRENCY $ NLS_ISO_CURRENCY AMERICA NLS_NUMERIC_CHARACTERS ., NLS_CHARACTERSET AL32UTF8 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 10.2.0.4.0
DBTIMEZONE is "+ 02:00".Verdi wrote:
Problem: when converting (implicit and explicit conversion with a format mask), I lose hours "00" and "00" minutes and receive something like this: "10 January 13 * 12 *. 00.00.000000000 AM.I don't think you lose necessarily any information whatsoever. It is probably more a function of your NLS_TIMESTAMP_FORMAT and NLS_DATE_FORMAT. For example, your NLS_DATE_FORMAT could be default setup for a HH24 (24 hours) which would report to midnight as hours of "00". However, it seems that your NLS_TIMESTAMP_FORMAT is configured with "HH" format with a Meridian indicator that means 12 hours time.
Your comparisons should use date/timestamp data types anyway, so as long as the input value is correctly converted to date type that shouldn't matter in any case.
You can see what is actually stored by using the DUMP function:
SQL> SELECT DUMP(TO_TIMESTAMP(TO_CHAR(TRUNC(SYSDATE,'DD'),'MM/DD/YYYY HH:MI:SS AM'))) AS TSTAMP 2 , DUMP(TRUNC(SYSDATE,'DD')) AS DT 3 FROM DUAL 4 / TSTAMP DT --------------------------------------------------------------------------- -------------------------------------------------- Typ=187 Len=20: 218,7,1,13,0,0,0,0,0,0,0,0,0,0,3,0,0,0,0,0 Typ=13 Len=8: 218,7,1,13,0,0,0,0
As you can see the TSTAMP and DT store almost the same values (218,7,1,13), but the TSTAMP has more precision because of fractions of a second.
HTH!
Published by: Centinul on January 13, 2010 07:23
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Added properties (Group and channel) are not a numeric data type.
I use a use to add two groups and channel custom properties. The properties are text and digital, double and whole.
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It seems that my properties are digital in the data portal, but the the query string of the browser.
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You don't have to delete the files. Choose the NAVIGATOR menu "settings > My DataFinder > reset... '. "can clilck on the UPPER part of the two buttons, one called"reset the index. Which will remove all records in database and re-index all of your data files. If you one of these properties have already optimized, set their State not optimized before resetting the index, otherwise the optimized property data types will persist.
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