Thread: Timestamp alculation identical to Microsoft Excel results
Hello, There is this Excel report which will be produced by an application. In Excel, there is below equation 31/10/2017 15:05 - 31/10/2017 14:36:00 = 0:28:21 2017-10-31 13:22:17 - 2017-11-01 14:47:45 = 1/1/1900 01:25 That is very simple in PostgreSQL. Simply subtract two timestamp without time zone fields and you have the result. However, Excel also represent that result 0:28:21 as double notation 0.0196874999965075 and 1/1/1900 01:25 as 1,05935185185081. I could not see any way to have same values using PostgreSQL query. I tried: extract(epoch from time_field2) - extract(epoch from time_field1) and result is 1701 and 5128 respectively. Putting aside reasons as to why numbers are used instead of more human understandable time format, I would like to learn if having same results as Excel is possible. Thanks & regards, Ertan Küçükoğlu
On 07-12-17 10:59, Ertan Küçükoğlu wrote: > Hello, > > There is this Excel report which will be produced by an application. In > Excel, there is below equation > 31/10/2017 15:05 - 31/10/2017 14:36:00 = 0:28:21 > 2017-10-31 13:22:17 - 2017-11-01 14:47:45 = 1/1/1900 01:25 > > That is very simple in PostgreSQL. Simply subtract two timestamp without > time zone fields and you have the result. However, Excel also represent that > result 0:28:21 as double notation 0.0196874999965075 and 1/1/1900 01:25 as > 1,05935185185081. > > I could not see any way to have same values using PostgreSQL query. I tried: > extract(epoch from time_field2) - extract(epoch from time_field1) and result > is 1701 and 5128 respectively. > > Putting aside reasons as to why numbers are used instead of more human > understandable time format, I would like to learn if having same results as > Excel is possible. > > Thanks & regards, > Ertan Küçükoğlu > This is what the maker of excel has to say about that: https://support.microsoft.com/en-us/help/214094/how-to-use-dates-and-times-in-excel