Hi,
I am wondering why the 'start of day' and 'start of year' modifiers
don't seem to work on Julian day timestrings. What is the explanation
for the NULLs in examples 2 and 3 below?
SELECT example,
timestring,
strftime('%J', timestring),
strftime('%Y-%m-%d %H:%M', timestring),
strftime('%Y-%m-%d %H:%M', timestring, '+21 minute'),
strftime('%Y-%m-%d %H:%M', timestring, 'localtime'),
strftime('%Y-%m-%d %H:%M', timestring, 'start of day')
FROM (
SELECT 1 example, 'now' timestring
UNION SELECT 2, strftime('%J', 'now')
UNION SELECT 3, 2457754
UNION SELECT 4, strftime('%Y-%m-%d %H:%M', 2457754)
UNION SELECT 5, strftime('%Y-%m-%d %H:%M', 'now')
) X
ORDER BY example
"1" "now" "2457815.431712523" "2017-03-02 22:21" "2017-03-02
22:42" "2017-03-02 23:21" "2017-03-02 00:00"
"2" "2457815.431712523" "2457815.431712523" "2017-03-02 22:21"
"2017-03-02 22:42" "2017-03-02 23:21" "NULL"
"3" "2457754" "2457754" "2016-12-31 12:00" "2016-12-31
12:21" "2016-12-31 13:00" "NULL"
"4" "2016-12-31 12:00" "2457754" "2016-12-31 12:00"
"2016-12-31 12:21" "2016-12-31 13:00" "2016-12-31 00:00"
"5" "2017-03-02 22:21" "2457815.43125" "2017-03-02 22:21"
"2017-03-02 22:42" "2017-03-02 23:21" "2017-03-02 00:00"
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