I am trying to do a query that chart date is the system time the data was charted is more than 8 hrs after the perform date time.
I am using the following query:
select * from pat_results where app_type like 'L' and (chart_dt_utc > perform_dt_utc +8)
The date and time format for both columns are 2012-12-29 11:44:00
Is the +8 correct?
No. In databases that allow you to add a number to a date, the number is measured in days.
The value you want to add is 8/24.0 -- include the decimal place, because some databases calculate 8/24 as integers and give you 0.
No, + 8 adds 8 days. You want:
select * from pat_results where app_type like 'L' and datediff(hour, chart_dt_utc, perform_dt_utc) > 8
Edit: Oh. For some reason I thought you were using SQL server. Well, suffice it to say, use whatever equivalent exists in your RDBMS.
Edit 2: In Oracle you can do this:
select * from pat_results where app_type like 'L'
and (chart_dt_utc > perform_dt_utc + (8 / 24))
Related
In my requirement, I need to take the difference between date time by milliseconds. its most of the time receiving correctly, but in sometimes, it shows minus value.
in my table I'm storing EXPIREDDATE as follows, to update EXPIREDDATE time by 2 hours
UPDATE nd_user_encode_keys
SET EXPIREDDATE = SYSDATE + ( 1 / 1440 * 120) -- here 120 means 2 hours
and according to my SP, above query running before the below query.
SELECT (EXPIRYDATETIME - SYSDATE) * 24 * 60 * 60 * 1000 as EXPIRYDATETIMEINMILISECONDS
My problem is most of the time result is 7200000 , but somtimes it shows minus value like this -34932000 . what could be the reason for this issue. can someone please explain.
When you have A - B, then the result can be:
0, if A = B
a positive number, if A > B
a negative number, if A < B --> that is your case
Why is expirydatetime less than sysdate and is that a valid value, I wouldn't know, but you should as it is your database, you're storing values into that table.
According to update statement you posted, and regarding the fact that sysdate won't return the same value "right now" as it did "a few moments ago", then it depends on when you ran that update.
Therefore, I presume it is about time difference between update and select.
I´m looking for a solution, where I can select the entries between 2 dates. My table is like this
ID | YEAR | MONTH | ....
Now i want to SELECT all entries between
MONTH 9 | YEAR 2015
MONTH 1 | YEAR 2016
I don´t get any entries, because the 2nd month is lower than the 1st month. Here is my query:
SELECT *
FROM table
WHERE YEAR >= '$year'
AND MONTH >= '$month'
AND YEAR <= '$year2'
AND MONTH <= '$month2'
I can´t change the columns of the table, because a csv import is like this. Can anyone help me on this?
The years aren't disconnected from the months, so you can't test them separately.
Try something like
$date1 = $year*100+$month; // will be 201509
$date2 = $year2*100+$month2; // will be 201602
...
SELECT * FROM table WHERE (YEAR*100)+MONTH >= '$date1' AND (YEAR*100)+MONTH <= '$date2'
Make sure you protect against SQL injection though.
SELECT
*
FROM
`my_table`
WHERE
((`YEAR` * 12) + `MONTH`) >= (($year * 12) + $month)
AND ((`YEAR` * 12) + `MONTH`) <= (($year2 * 12) + $month2)
Since they aren't date fields, you need to convert to numbers that can be compared against. Multiplying the year by 12 and adding the month will give you a unique number specific to that month of the year. Then you can compare on that.
There are a couple of good answers, but assuming taht you don't/can't change the date's format something you can do is
WHERE ((YEAR>'$year') OR
(YEAR=='$year' AND MONTH>='$month')
AND ((YEAR<'$year2') OR
(YEAR=='$year2' AND MONTH<='$month2')
I would suggest the workarounds though (like alphabetically comparing in YYYYMM[DD] format).
You need to pad the month to make sure it starts with a zero. Otherwise 20162 will be lower than 201512, for example.
$date1 = $year . str_pad($month, 2, "0", STR_PAD_LEFT);
$date2 = $year2 . str_pad($month2, 2, "0", STR_PAD_LEFT);
"SELECT * FROM dates WHERE concat(`year`, LPAD(`month`, 2, '0')) >= '$date1' AND concat(`year`, LPAD(`month`, 2, '0')) <= '$date2'"
Though there are a lot of ways to solve this problem, but the best way is to convert these values into a proper date type in mysql query using str_to_date it is PHP's equivalent of strtotime, your new query should look like this
SELECT
d.*
from
dates as d
where
STR_TO_DATE( concat('1,',d.month,',',d.year) ,'%d,%m,%Y') > STR_TO_DATE('1,5,2015','%d,%m,%Y')
and
STR_TO_DATE( concat('1,',d.month,',',d.year) ,'%d,%m,%Y') < STR_TO_DATE('1,4,2016','%d,%m,%Y')
Using this technique you can easily compare dates and do much more and not worry about other complexities of calendars.
Source: MySQL date and time functions
Suppose I have the following query:
select customer_name, origination_date
where origination_date < '01-DEC-2013';
I would like to select all customers that have an origination date older than 30 days. Is there a way in SQL (oracle, if specifics needed) to specify it in a more dynamic approach than manually entering the date so that I don't need to update the query every time I run it?
Thanks!
Sure try something like this:
select customer_name, origination_date where
origination_date >= DATEADD(day, -30, GETUTCDATE());
This basically says where the origination_date is greater or equal to 30 days from now. This works in Microsoft SQL, not sure but there is probably a similar function on Oracle.
in Oracle, when you subtract dates, by default you get the difference in days, e.g.
select * from my_table where (date_1 - date_2) > 30
should return the records whose date difference is greater than 30 days.
To make your query dynamic, you parameterize it, so instead of using hard coded date values, you use:
select * from my_table where (:date_1 - :date_2) > :threshold
If you are using oracle sql developer to run such a query, it will pop up a window for you to specify the values for your paramteres; the ones preceded with colon.
HI all,
i have one sql table and field for that table is
id
name
expireydate
Now i want only those record which one is expired within 45 days or 30 days.
how can i do with sql query .?
I have not much more exp with sql .
Thanks in advance,
If you are using mysql then try DATEDIFF.
for 45 days
select * from `table` where DATEDIFF(now(),expireydate)<=45;
for 30 days
select * from `table` where DATEDIFF(now(),expireydate)<=30;
In oracle - will do the trick instead of datediff and SYSDATE instead of now().[not sure]
In sql server DateDiff is quite different you have to provide unit in which difference to be taken out from 2 dates.
DATEDIFF(datepart,startdate,enddate)
to get current date try one of this: CURRENT_TIMESTAMP or GETDATE() or {fn NOW()}
You can use a simple SELECT * FROM yourtable WHERE expireydate < "some formula calculating today+30 or 45 days".
Simple comparison will work there, the tricky part is to write this last bit concerning the date you want to compare to. It'll depend of your environment and how you stored the "expireydate" in the database.
Try Below:-
SELECT * FROM MYTABLE WHERE (expireydate in days) < ((CURRENTDATE in days)+ 45)
Do not execute directly! Depending of your database, way of obtaining a date in days will be different. Go look at your database manual or please precise what is your database.
I have a table containing events which happen in my application like people logging in and people changing settings.
They have a date/time against the event in the following format:
2010-01-29 10:27:29
Is it possible to use SQL to select the events that have only happened in the last 5 mins?
So if the date/time was 2010-01-29 10:27:29 it would only select the events that happened between 10:27:29 and 10:22:29?
Cheers
Eef
SELECT foo FROM bar WHERE event_time > DATE_SUB(NOW(), INTERVAL 5 MINUTES)
(Not sure if it's minutes or minute)
WHERE my_timestamp < DATE_SUB(now(), INTERVAL 5 MINUTE)
You should provide table and column names to make it easy for us to answer your question.
You can write SQL as
SELECT *
FROM Table
WHERE DateTimeColumnName <= '2010/01/29 10:27:29'
AND DateTimeColumnName >= '2010/01/29 10:22:29'
or you can use BETWEEN
SELECT *
FROM Table
WHERE DateTimeColumnName BETWEEN '2010/01/29 10:22:29' AND '2010/01/29 10:27:29'
Now see if there are datetime functions in MySQL to do a Date Math so just pass a single date stamp, and do the math to subtract 5 min from it and use it as the second parameter in the between clause.