I have two variables 'triage_date_time' and 'checkin_date_time'. Both are formatted as, for example, 2018-12-31 14:13:00. Showing the year-month-day and hour-minute-second both within one cell.
I wanted to create a variable that calculates the time it takes from check-in to triage.
I attempted to use the following code:
SELECT DISTINCT datediff(minute, 'triage_date_time', 'checkin_date_time') as
checkin_to_triage
However, when running this code I get the following error... "Conversion failed when converting date and/or time from character string".
Any suggestions of how I can write a code that would calculate the minute difference of these two variables.
Thanks!
One problem is obviously the single quotes. Assuming that you are using SQL Server, variables start with #. So:
select datediff(minute, #triage_date_time, #checkin_date_time) as checkin_to_triage
If you are confused and really mean columns in a table, then:
select datediff(minute, triage_date_time, checkin_date_time) as checkin_to_triage
from t;
could it be that your field is a CHARACTER data type ?
cast your char to datetime
SELECT DISTINCT datediff(minute, CAST(triage_date_time AS datetime), CAST(checkin_date_time AS datetime)) as checkin_to_triage
Try with this query
DECLARE #triage_date_time DATETIME = '20181231 14:13:00'
DECLARE #checkin_date_time DATETIME = '20181231 16:13:00'
SELECT DATEDIFF (MINUTE, #triage_date_time, #checkin_date_time) AS 'checkin_to_triage'
Output :
checkin_to_triage
120
Related
I am having issues trying to calculate the difference in Minutes between a Field and a literal string. However the output I am getting doesnt seem right at all, it looks to me like you can't seem to compare a Field and a literal string, however if they both the same then it seems fine i.e both are column values or literal strings.
Here is the SQL
select datediff(minute,enquiry,cast('17:00:00' as time))
from [dbo].[Test_Dates]
Is there anyway to get the right results, given the enquiry Field has values of hours within business hours. The result from the above query I am getting is as follows: -61536240
You should make both fields in time format
SELECT DATEDIFF(minute, CONVERT(CHAR(5), enquiry, 108) , CAST('17:00:00' as time))
FROM [dbo].[Test_Dates]
or
SELECT DATEDIFF(minute, CAST(enquiry as time) , CAST('17:00:00' as time))
FROM [dbo].[Test_Dates]
select datediff(minute,cast (enquiry as time),cast('17:00:00' as time)) from test_dates as t
I have a script that I am using to populate a time dimension table and I would like to have a column for the time in 12 hour format.
I know this can be done by doing something along the lines of
SELECT CONVERT(varchar(15),[FullTime],100)
Where [FullTime] is a column containing a TIME field in HH:MM:SS format.
But this gives the following result 2:30pm and I would like 2:30:47PM, note the inclusion of seconds.
I know I could build this up using substrings etc. but I wondered if there was a prettier way of doing it.
Thanks
SELECT GETDATE() 'Today',
CONVERT(VARCHAR(8), [FullTime], 108) 'hh:mi:ss'
Taken from here
This will give you a column 'today' followed by the time value you seek 'hh:mi:ss'
If having also milliseconds is not a problem for you, you can use
SELECT CONVERT(VARCHAR, [FullTime], 109)
Declare #tstTime datetime
set #tstTime = GetDate()
Select
#tstTime
,CONCAT(SUBSTRING(CONVERT(varchar(26), #tstTime, 109),1,20),RIGHT(CONVERT(varchar(26), #tstTime, 109),2))
I am trying to compare time in my SQL query. However, when I run the query, I get zero result but I can see that in the table, there are records that should appear.
The query is as such:
SELECT *
FROM dbo.Alarms
WHERE StartDate <= '26/08/2015'
AND StartTime <= CONVERT(varchar(5), GETDATE(), 108)
The StartDate is stored in the database as YYYY-MM-DD and it seems to work fine when I query only with the date.
However, when I add the StartTime is when things don't work. StartTime stores the value in the 24 hour clock format.
What am not doing right?
Thanks
Use a correct datetime format:
SELECT *
FROM dbo.Alarms
WHERE StartDate <= '2015-08-26' AND StartTime <= cast(GETDATE() as date)
Don't compare date/time values as strings. The data types are built into the language. Use them.
I have not explicitly used this scenario but comparing dates can be a problem depending on how the fields are compared.
eg: '28/07/2015' is not less than your startdate as 28 > 26.
You could try comparing dates reformatted into a YYYYMMDD format.
Cheers.
I have two columns in my table, one to capture time and one to capture date. Unfortunately, both are varchar(). I need to take the two fields, concatenate them together, and then convert them to datetime.
I am trying to accomplish that with this:
select CONVERT(datetime,(select txt_returned_date+' '+CONVERT(varchar(20),CONVERT(TIME,txt_time_returned))),126)
from table_name
I am getting this error message:
Conversion failed when converting date and/or time from character string.
The date is being captured as "20130308" as a string. Time is being captures as "4:27 PM" as a string
What I am doing here is converting the string of the time to TIME, then back to varchar. Then I am concatenating them together. This works by itself, but once I introduce the CONVERT(datetime) to the whole query, it is giving me the error.
Any help to try to accomplish this is helpful. Thanks!
You can concatenate the DATE and TIME values together once they have been converted to a DATETIME. Here's a sample to play with that shows concatenating a DATE column and a TIME column that have been stored as VARCHAR:
-- Set up some variables to test with
DECLARE #myTime TIME = GETDATE()
, #myDate DATE = GETDATE()
, #myTimeTxt VARCHAR(16)
, #myDateTxt VARCHAR(10);
-- Initialize your variables
SELECT #myTimeTxt = #myTime
, #myDateTxt = #myDate;
-- Display your separated values
SELECT #myDateTxt, #myTimeTxt;
-- Display your concatenated value
SELECT CAST(#myDateTxt AS DATETIME) + CAST(CAST(#myTimeTxt AS TIME) AS DATETIME);
You can use this option
DECLARE #date date = '20010101',
#time time = '01:01:01'
SELECT CAST(#date AS datetime) + #time
Result:2001-01-01 01:01:01.000
Demo on SQLFiddle
Are you using SQL 2012? If so you may be able to use the datetimedromparts function to achieve this. If not for this specific example, it's always good to know for the future :)
http://technet.microsoft.com/en-gb/library/hh213233.aspx
Here is my query:
UPDATE Mst_Attendance
SET FNLogged=#FNLogged,
ANLogged=#ANLogged,LogTime=#LogTime,LogOuttime=#LogOuttime
WHERE EmployeeId=#Employee_id AND Atdate = CONVERT(VARCHAR(10), #AtDate, 101) AS [MM/DD/YYYY]
-- Convert(Datetime,#AtDate)
SELECT * FROM Mst_Attendance where Atdate=#AtDate and EmployeeId=#Employee_id
Error occured near AS
Just remove the AS [MM/DD/YY] snippet. You don't need it, and it's not valid inside a WHERE clause.
And what in the world are you doing storing dates as strings in your database? That's just a bad idea. Are you trying to truncate the time portion?
AS in that context is used to give an alias to a column or table; there is no sense in an AS here, since that isn't a select.
You have already specified a format via CONVERT(VARCHAR(10), #AtDate, 101), but this also seems odd; dates are not strings. If you are matching on a datetime - keep everything as a datetime.
If you are actually trying to remove the time portion (leaving just a date), either a: don't send the time (cut it at the caller), or b: do something like:
set #date = cast(floor(cast(#date as float)) as datetime)