This is perhaps unintuitive for example, if we pass DATEDIFF (year, ‘’, ‘’) the function will return one year, even though there’s only a single day difference. Out of curiosity I executed: select datediff(day, getdate(), currenttimestamp) and got the following error: function pgcatalog.datediff('unknown', timestamp without time zone, timestamp with time zone) does not exist So I guess that currenttimestamp returns a timestamp with a timezone and getdate() a timestamp without. DAY, MONTH, SECOND) or a string literal ( 'day', 'month', 'second'), but date_diff() only accepts string literal interval representations. These functions describe how to find the difference in days between two dates. The DATEDIFF function determines the number of date part boundaries crossed between two date/time expressions. Redshift (SQL): try convert to timestamp. A curious difference between the two functions is that DATEDIFF will accept either a raw interval for its first argument (e.g. redshift datediff not working when currenttimestamp is used but working when getdate() function is used. , date_diff('day', ''::DATE, ''::DATE) AS date_diff_outputĪWS provides documentation on DATEDIFF(), however no record of date_diff() appears to exist within either Redshift or PostgreSQL documentation. , datediff('day', ''::DATE, ''::DATE) AS datediff_str_literal_output For minus sign: Returns an integer representing the number of days difference between dateexpr2 and dateexpr1. Other solutions result in two business days between say Tuesday and Wednesday. For DATEDIFF: Returns an integer representing the number of units (seconds, days, etc.) difference between dateortimeexpr2 and dateortimeexpr1. Diff between two adjacent weekdays should be 1 day in both cases. The following code snippet provides an example of this behavior: SELECT datediff(DAYS, ''::DATE, ''::DATE) AS datediff_interval_output If you're looking for a 'business day diff' then please also compare it to a normal calendar day diff (i.e. It appears that Redshift supports two possible functions for computing a time interval distance between two DATE-like objects: DATEDIFF() & date_diff().
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |