I have the following data:
CUSTOMER_ORDERS:
CUST_ORDER_NO CREATE_DATETIME
WEB904204965 17-SEP-21 03.12.45.719000000 PM
WEB904204966 17-SEP-21 03.16.45.719000000 PM
I want to check the number of orders in every hour, like:
COUNT SLAB
2 1-2 PM
4 2-3 PM
How to write the query for this?
You can trunc the date/time or extract just the hour component, then GROUP BY that expression.
Here's a test case with sample SQL:
Working Test Case with a little data
SELECT COUNT(*) AS n
, to_char(dt, 'HH') AS slab
FROM test
GROUP BY to_char(dt, 'HH')
;
Result:
We could have used 'HH24' to show the 24 hour value or 'HH AM' to show the 'hours plus AM/PM' indicator.
SELECT to_char(current_date, 'HH24') AS slab FROM dual;
SELECT to_char(current_date, 'HH AM') AS slab FROM dual;
Related
I have a sales table with created datetime, my business hours are from 9 AM to 2 AM in the night on the following day. I am trying to convert the dates into my business date.
01/08/22 09:39:12.000000000 AM +04:00
Lets say I have a sale at 1 AM, this sale has to be considered in the previous day.
Any function that can help me solve this issue would be appreciated
It might be a bit of an overkill, but you could just use EXTRACT:
WITH dat AS
(
SELECT to_date('01/08/22 09:39:12','DD/MM/YY HH24:MI:SS') AS t_stmp FROM dual UNION ALL
SELECT to_date('02/08/22 01:03:15','DD/MM/YY HH24:MI:SS') FROM dual UNION ALL
SELECT to_date('02/08/22 08:27:33','DD/MM/YY HH24:MI:SS') FROM dual UNION ALL
SELECT to_date('02/08/22 14:11:51','DD/MM/YY HH24:MI:SS') FROM dual UNION ALL
SELECT to_date('02/08/22 02:01:15','DD/MM/YY HH24:MI:SS') FROM dual
)
SELECT CASE WHEN EXTRACT(HOUR FROM CAST(t_stmp AS TIMESTAMP)) BETWEEN 2 AND 8 THEN -1
ELSE 0
END + TRUNC(t_stmp,'DD') AS business_date
FROM dat;
business_date
01.08.2022
02.08.2022
01.08.2022
02.08.2022
01.08.2022
It looks like you just need to make a 2 hour shift to get your sales in the right date. You can add or substract hours from DATE/DATETIME/TIMESTAMP data type. If your column is TIMESTAMP then it would be like this:
-- when selecting data for date of sales
SELECT TRUNC(your_column_name - INTERVAL '2' HOUR, 'dd') "SALE_DATE"
-- And/Or
WHERE TRUNC(your_column_name - INTERVAL '2' HOUR, 'dd') = :DATE_OF_SALES
-- TRUNC function always returns DATE datatype
--
-- The opposite conversion would be
CAST(your_datetime_column + INTERVAL '2' HOUR as TIMESTAMP) ...
Here is the small sample with result:
SELECT
to_char(SYSDATE, 'dd.mm.yyyy hh24:mi:ss') "DATETIME",
to_char(SYSDATE - INTERVAL '2' HOUR, 'dd.mm.yyyy hh24:mi:ss') "DATETIME_MINUS_2H",
to_char(SYSDATE + INTERVAL '2' HOUR, 'dd.mm.yyyy hh24:mi:ss') "DATETIME_PLUS_2H",
to_char(SYSDATE - INTERVAL '10' HOUR, 'dd.mm.yyyy hh24:mi:ss') "DATETIME_MINUS_10H"
FROM
DUAL
--
-- R e s u l t
--
-- DATETIME DATETIME_MINUS_2H DATETIME_PLUS_2H DATETIME_MINUS_10H
-- ------------------- ------------------- ------------------- -------------------
-- 07.08.2022 09:58:38 07.08.2022 07:58:38 07.08.2022 11:58:38 06.08.2022 23:58:38
The last column now has the date from day before.
Is it possible to turn the current time stamp to a whole number?
Example: If sysdate returns 1/19/2022 5:36:49 PM can I turn that to 1/19/2022 5PM since it falls in the 5PM range.
Here is my query
Select FACILITY, TRK_ID, LOT_DTTM, IN_QTY
from TRK_ID_LOT
WHERE facility in 'DP1DM5'
and trk_id like ('AE%')
and lot_dttm > sysdate - 1
EXAMPLE:
Truncate it to hours:
SQL> select trunc(to_date('1/19/2022 5:36:49 PM', 'mm/dd/yyyy hh:mi:ss pm'), 'hh') res
2 from dual;
RES
----------------------
01/19/2022 05:00:00 PM
SQL>
If you want to update rows, do so using the same function:
update your_table set
date_column = trunc(date_column, 'hh');
I want to check that a column creation_date has a date and time in it. I want to make a query that fetches data before 4:00 PM and after 8:00 AM in an oracle sql query.
Creation Date has dates like 12/03/2020 08:02:00 AM, 12/05/2020 08:02:00 PM
SELECT *
FROM t1 IH
WHERE
to_char(IH.CREATION_DATE,'HH:MI:SS PM')>to_char('04:00:00 PM')
You can use calculation on date and fetch hours as follows:
select *
from your_table
where creation_date - trunc(creation date)* 24 between 8 and 16;
If you want to check the time in Oracle, you can convert to a string and compare:
select *
from t1
where to_char(creation_date, 'HH24:MI') >= '08:00' and
to_char(creation_date, 'HH24:MI') < '16:00';
Oracle doesn't support a time data type, so strings are convenient.
Another method that works because you care about full hours is:
where extract(hour from creation_date) between 8 and 15
This assumes that creation_date is a timetamp. Or you need to convert it:
where extract(hour from cast(creation_date as timestamp)) between 8 and 15
Assuming this has a simple solution, but I can't find it.
I'm trying to do some logic on a DATE field in Oracle. My desire is to take a DATE field and subtract X hours from it.
For instance: SELECT A.MyDATE - 100 Hours from dual;
however, I need a result in a timestamp format 'YYYY-MM-DD hh:mm'.
I've tried CAST(A.MyDATE as TIMESTAMP) - NUMTODSINTERVAL(100/24,'day') however it didn't work.
I found out that the issue is that the MyDATE field when cast to a timestamp still contained some residual time elements. How can I reset these??
Thanks!
You can just do this with subtraction:
select a.MyDate - 100.0/24
To convert to varchar:
select to_char(a.MyDate - 100.0/24, 'YYYY-MM-DD')
And, if you want to get rid of that pesky time on the date:
select trunc(a.MyDate - 100.0/24) as JustTheDate
The formats and dates in my example can be changed to any other formats and dates:
SELECT To_Timestamp(To_Char(Sysdate - INTERVAL '100' HOUR, 'MM/DD/YYYY HH24:MI'), 'MM/DD/YYYY HH24:MI')
FROM dual
/
Output:
2/4/2013 10:18:00.000000000 AM
To remove time element add Trunc() to any of your dates...:
SELECT Trunc(To_Timestamp(To_Char(Sysdate - INTERVAL '100' HOUR, 'MM/DD/YYYY HH24:MI'), 'MM/DD/YYYY HH24:MI'))
FROM dual
/
Output: 2/4/2013
Conversion/Casting - when using other dates in place of sysdate then add formats as in my other examples:
SELECT CAST(SYSDATE AS TIMESTAMP) - INTERVAL '100' HOUR FROM dual
/
Output: 2/4/2013 10:26:35.000000000 AM
SELECT start_date tstamp_to_date, CAST(start_date AS timestamp) date_to_tstamp FROM
(
SELECT to_date(to_char(to_timestamp ('2013-02-07 10:07:47.000' , 'YYYY-MM-DD HH24:MI:SS.FF'),'DD-MON-YYYY HH24:MI:SS'), 'DD-MON-YYYY HH24:MI:SS') start_date
FROM dual
)
/
Output:
tstamp_to_date date_to_tstamp
-------------------------------------------------------
2/7/2013 10:07:47 AM 2/7/2013 10:07:47.000000 AM
In Oracle, a DATE always has a day and a time component. Depending on the tool you are using and your session's NLS_DATE_FORMAT, it is entirely possible that the tool may not display the time component when you look at the data. But that is simply a display question, it has no impact on the actual data.
If you want to subtract 100 hours from midnight on the day that MyDate represents
SELECT TRUNC(MyDate) - interval '100' hour
FROM dual
This will return a DATE. If you want to return a string in a particular format
SELECT TO_CHAR( TRUNC(MyDate) - interval '100' hour, 'YYYY-MM-DD hh:mi am' )
FROM dual
Note that I'm assuming that there was a typo in your question. I assume that you want to display the minutes after the hour (mi) rather than the month (mm).
I am trying to fetch the records which is older than 30 days (from Mod_date) and I am using the below query and it is returning all the data and I want only 30 days old data.
Sample :- Mod_date 03-NOV-12 12.00.00.000000000 AM
Query :-
select Mod_date from fil_cnfact where Mod_date <= sysdate -30 order by Mod_date asc ;
We have times stored in an Oracle varchar(5) field.
Times stored using HH24:MI (ie: 22:30, 10:15).
How can we run a query that will increase or decrease these times by a certain amount? Ie: increase by one hour or decrease by 45 minutes.
you could use the built-in date (and interval -- thanks Alex for the link) calculation:
to_char(to_date(:x, 'hh24:mi') + INTERVAL :y MINUTE,'hh24:mi')
for instance:
SQL> WITH my_data AS (
2 SELECT '12:15' t FROM dual
3 UNION ALL SELECT '10:30' FROM dual
4 )
5 SELECT t,
6 to_char(to_date(t, 'hh24:mi') + INTERVAL '15' MINUTE,'hh24:mi')"t+15"
7 FROM my_data;
T t+15
----- -----
12:15 12:30
10:30 10:45
The functions to convert from/to date and char are TO_DATE() and TO_CHAR():
SELECT
TO_DATE('31/12/2001 23:55:00', 'DD/MM/YYYY HH24:MI:SS') AS "DATE",
TO_CHAR(CURRENT_TIMESTAMP, 'DD/MM/YYYY HH24:MI:SS') AS "CHAR"
FROM DUAL
So you can do:
SELECT
TO_DATE('23:45', 'HH24:MI'),
TO_DATE('23:45', 'HH24:MI') + INTERVAL '45' MINUTE,
TO_CHAR(TO_DATE('23:45', 'HH24:MI') + interval '45' MINUTE, 'HH24:MI')
FROM DUAL
There're possibly other better ways to do it (I'm not sure this will work as expected if ran when DST is about to start) but I'm still learning :)