DB2 date-time-timestamp Calculation

DB2 date-time-timestamp operation 1. Date value operation. When the date is increased or subtracted from the previous year, month, or day, the English word year, month, or day can be followed directly after the added or removed value; if the value is greater than 1, the plural form is used, as follows: values (current date, -- 2013-03-26 (current_date) current date + 10 years, -- 2023-03-26 current date-13 years, -- 2000-03-26 current date + 13 months, -- 2014-04-26 current date-24 months, -- 2011-03-26 current date + 60 days, -- 2013-05-25 current date-26 days -- 2013-02-28) 2. The time operation adds or removes the hour, minute, and second values on the specified time value, followed by hour, minute, and s. Econd. Values (current_time, -- 18:59:54 current_time + 10 hours, -- 04:59:54 current_time-23 hours, -- 19:59:54 current_time + 12 minutes, -- 19:11:54 current_time-63 minutes, -- 17:56:54 current_time + 25 seconds, -- 19:00:19 current_time-61 seconds -- 18:58:53) it must be noted that when the added or removed value is a floating point number, only the integer part is calculated, and the decimal part does not affect subsequent operations, sequence: year-> month-> day-> hour-> minute-> second 3. The timestamp operation combines 1st and 2nd. Values (current_timestamp, -- hour current_timestamp + 10.5 years, -- hour current_timestamp-4 months, -- hour + 26 days, -- hour current_timestamp + 7 hours, -- hour current_timestamp-5.2 minutes, -- 2013-03-26-19.42.52.414000 current_timestamp-1 second, -- 2013-03-26-19.47.51.414000 current_timestamp + 10 microseconds -- 2013-03-26-19.47.52.414010) Source http://blog.csdn.net/bobo12082119/article/details/8724586