Re: [libreoffice-users] Calculating the difference between two time values by means of SQL
> You are looking for the function DATEDIFF(string, datetime1, datetime2) Thanks for your information. I got distracted by the key word “DATE” while I was looking for the support of an other time unit. An SQL statement like the following can fit to my application needs. SELECT "day", "start", "stop", DATEDIFF( 'minute', "start", "stop" ) / 60.000 AS "duration" FROM "time_measurements"; Will any adjustments become more helpful also for the software documentation? Regards, Markus -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette List archive: https://listarchives.libreoffice.org/global/users/ Privacy Policy: https://www.documentfoundation.org/privacy
Re: [libreoffice-users] Calculating the difference between two time values by means of SQL
Hi, > > > SELECT ID, t1, t2, t2 - t1 AS duration FROM time_measurements1 You are looking for the function DATEDIFF(string, datetime1, datetime2) Could be this works, if you have choosen a datetime field, not only a time field. SELECT ID, t1, t2, DATEDIFF('hour', t1, t2) AS duration FROM time_measurements1 > > Would you like to point further information sources out besides query examples > which work with dates and time stamps? You are German, right? have a look at "Base Handbuch" and also "Base Beispiele". In "Base Beispiele" is an example für getting times for running or something like this. Regards Robert -- Homepage: https://www.familiegrosskopf.de/robert -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette List archive: https://listarchives.libreoffice.org/global/users/ Privacy Policy: https://www.documentfoundation.org/privacy
Re: [libreoffice-users] Calculating the difference between two time values by means of SQL
Howdy, The salient point here is the version of HSQLdb which comes with LibreOffice is rather old and lacking when it comes to date manipulation, but it can be done and hopefully this post over at ASK dot LibreOfffice will help answer you question: https://ask.libreoffice.org/en/question/75480/how-to-do-basic-arithmatic-with-dates-in-libre-base-queries/ best wishes, Drew On Thu, Mar 4, 2021 at 9:04 AM Markus Elfring wrote: > > Hello, > > Two columns of a table (for the database engine “HyperSQL” within the > application > “LibreOffice Base 7.1.0.3-985.1”) have got the data type “TIME”. > I would like to compute a difference for these fields. > > It seems that the following SQL statement is insufficient so far. > > SELECT ID, t1, t2, t2 - t1 AS duration FROM time_measurements1 > > > I would appreciate your advices. > > Would you like to point further information sources out besides query examples > which work with dates and time stamps? > > Regards, > Markus > > -- > To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org > Problems? > https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ > Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette > List archive: https://listarchives.libreoffice.org/global/users/ > Privacy Policy: https://www.documentfoundation.org/privacy -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette List archive: https://listarchives.libreoffice.org/global/users/ Privacy Policy: https://www.documentfoundation.org/privacy
[libreoffice-users] Calculating the difference between two time values by means of SQL
Hello, Two columns of a table (for the database engine “HyperSQL” within the application “LibreOffice Base 7.1.0.3-985.1”) have got the data type “TIME”. I would like to compute a difference for these fields. It seems that the following SQL statement is insufficient so far. SELECT ID, t1, t2, t2 - t1 AS duration FROM time_measurements1 I would appreciate your advices. Would you like to point further information sources out besides query examples which work with dates and time stamps? Regards, Markus -- To unsubscribe e-mail to: users+unsubscr...@global.libreoffice.org Problems? https://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: https://wiki.documentfoundation.org/Netiquette List archive: https://listarchives.libreoffice.org/global/users/ Privacy Policy: https://www.documentfoundation.org/privacy