The extract function supports the following fields: Parses string into a timestamp with time zone using format. parse_datetime ( string, format ) → timestamp with time zone # format_datetime ( timestamp, format ) → varchar #įormats timestamp as a string using format. JodaTime’s DateTimeFormat pattern format. This specifier does not support 0 as a month or day. Consider using day_of_week() (it uses 1-7 instead of 0-6). When parsing, two-digit year format assumes range 1970. Year for the week, where Monday is the first day of the week, numeric, four digits used with %v Year for the week where Sunday is the first day of the week, numeric, four digits used with %V ![]() 6), where Sunday is the first day of the week 53), where Monday is the first day of the week used with %xĭay of the week ( 0. ![]() 53), where Sunday is the first day of the week used with %X 53), where Monday is the first day of the week 53), where Sunday is the first day of the week Time of day, 24-hour (equivalent to %H:%i:%s) Time of day, 12-hour (equivalent to %h:%i:%s %p) 31) įraction of second (6 digits for printing: 000000. The following table,īased on the MySQL manual, describes the format specifiers:ĭay of the month with English suffix ( 0th, 1st, 2nd, 3rd, …)ĭay of the month, numeric ( 01. The MySQL date_parse and str_to_date functions. The functions in this section use a format string that is compatible with SELECT human_readable_seconds ( 96 ) - 1 minute, 36 seconds SELECT human_readable_seconds ( 3762 ) - 1 hour, 2 minutes, 42 seconds SELECT human_readable_seconds ( 56363463 ) - 93 weeks, 1 day, 8 hours, 31 minutes, 3 seconds MySQL date functions # from_unixtime_nanos ( unixtime ) → timestamp(9) with time zone # The number of seconds since 00:00:00 in double data type. Using hours and minutes for the time zone offset. ![]() from_unixtime ( unixtime, hours, minutes ) → timestamp(3) with time zone Returns the UNIX timestamp unixtime as a timestamp with time zone from_unixtime ( unixtime, zone ) → timestamp(3) with time zone Returns the UNIX timestamp unixtime as a timestamp with time zone. from_unixtime ( unixtime ) → timestamp(3) with time zone # Returns a timestamp with time zone from timestamp with precision pĪnd zone. with_timezone ( timestamp, zone ) → timestamp(p) with time zone # Zone while preserving the instant in time. Using 300 as the value in the number_of_seconds variable, the result was “ 17:40:05”, which is the correct value that I was looking (300 seconds = 5 minutes).SELECT from_iso8601_date ( '' ) - SELECT from_iso8601_date ( '2020-W10' ) - SELECT from_iso8601_date ( '2020-123' ) - at_timezone ( timestamp, zone ) → timestamp(p) with time zone #Ĭhange the time zone component of timestamp with precision p to In my table, the initial value of p.date_time was “ 17:35:05”. The key here is that I added number_of_seconds * INTERVAL '1 second', and not INTERVAL 'number_of_seconds seconds', which would not work, because the PostgreSQL wouldn’t be able to correctly form the time interval. SELECT p.date_time + number_of_seconds * INTERVAL '1 second' In my situation, I have a timestamp column date_time on the photo, and want to select this value, plus a number_of_seconds (variable), of the row with id 1. ![]() It’s very simple indeed, and I’ll exemplify below. The result will be a timestamp, as you can see on the documentation. If you need to add a time interval to a timestamp or date data, using a variable, then you will have only to multiply the variable (that is, a number of unities) by the correct interval, and use the appropriate operator (+/-).
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