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Closed 11 years ago.
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Calculate difference between 2 date / times in Oracle SQL
so i am creating a database for an airline as part of my university coursework. first time using oracle.
I am trying to calculate the hours between two timestamps.
so something like
v_interval = new.departure_time - v_arrival_time;
v_days = extract (day . v_interval);
v_hours = extract (hours, v_interval) + (v_days * 24);
how do you guys think i should do it?
Similar question:
Calculate difference between 2 date / times in Oracle SQL
More examples:
Date / Time Arithmetic with Oracle 9/10
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This question already has an answer here:
Oracle SQL Where clause to find date records older than 30 days
(1 answer)
Closed 2 years ago.
I want to get an ORACLE statement which returns rows that are older than 30 days from the the date of creation.
My table has a field "date_entered" that contains the date and the time it was inserted in the database .
Thanks,
your select statement
WHERE date_entered < TRUNC(SYSDATE)-30
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Closed 4 years ago.
I was looking for the answer to this question, and I found here that DATEDIFF() function is a way to do it when you have the dates. But, what if you don't have specific dates?
What if you want to find the interval of time between the date in 2 columns (rental_date, return_date).
I tried to use DATEDIFF() function, but it looks like you need the actual date.
You can use date_part for finding differences between two dates in the PostgreSQL.
The syntax is like as follow.
DATE_PART('day', enddate - startdate);
You can get years, months, weeks, hours, minutes seconds as well. You can check more about the usage of date different and date part function in PostgreSQL by clicking on this link.
if your two column data type is date then you could do subtraction
select '2018-12-10'::date - '2018-11-18'::date
so in your case it would be
with t1 as
(
select '2018-12-10'::date as rental_date, '2018-11-18'::date as return_date
)
select rental_date-return_date from t1
This question already has answers here:
How to add a variable number of hours to a date in PostgreSQL?
(5 answers)
Closed 8 years ago.
I would like to do a query in postgres which should bring count of records that updated previous one hour
For example 9AM-10AM records updated is 100 means I should get 100.
10AM-11AM records update is 200 means I should get 200(not 300).
Sample time stamp in updated column 2011-02-03 09:00:00
I have tried like this
select count(*) from customer where updated>=now()-1 and updated<now()
I know now()-1 will take yesterday. I dont know how to minus one hour from now
This should be doable using the date/time related functions and operations provided by Postgres:
where updated between
(date_trunc('hour',current_timestamp) - interval '1 hour')
and
(date_trunc('hour',current_timestamp))
Explanation:
date_trunc('hour',current_timestamp)
Gives the current time with minutes, seconds and milliseconds set to 0, and
- interval '1 hour'
subtracts one hour from a given timestamp.
Combine those to create the range you want ( between )
This question already has answers here:
Create a function to return current date and time in oracle
(4 answers)
Closed 8 years ago.
I need to get the system date as Last Modified date in my Database, what will be the query I need to give in Oracle SQL Developer ?
Use
current_date
or Use
TO_CHAR
This question already has answers here:
Calculate difference between 2 date / times in Oracle SQL
(21 answers)
Closed 8 years ago.
I have two rows stored in a table called client_booking. These are called start_time and end_time. I need to create a text box in ORACLE APEX which generates the elapsed time through an SQL query.
Time difference being in days, let us multiply it by no of hours 24 and no of minutes 60. Assuming they are of DATE or TIMESTAMP datatypes
select (
to_date('01-01-2014 '|| end_time ||'00','DD-MM-YYYY HHMISS') -
to_date('01-01-2014 '|| start_time||'00','DD-MM-YYYY HHMISS')
) * 24 * 60 as time_elapsed_in_mins
from your_table;