将日期'yyyymmdd hh24:MI:SS'转换为 yyyy-mm-ddTHH24:MI:SS



转换日期格式:

例如:转换

'20160203 16:00:00' to '2016-02-03T16:00:00'
'20160204 15:59:59' to '2016-02-04T15:59:59'

使用 to_char

SELECT to_char(to_timestamp('20160204 15:59:59','yyyymmdd HH24:MI:SS'),
               'yyyy-mm-dd"T"HH24:MI:SS')
-- 2016-02-04T15:59:59

或:

SELECT to_char('20160204 15:59:59'::timestamp,'yyyy-mm-dd"T"HH24:MI:SS')
-- 2016-02-04T15:59:59

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