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Prudhvi PorandlaPindikura Ravindra
0d1c7ec8555
Prudhvi Porandla authored and Pindikura Ravindra committed efeecfb21f2
ARROW-6137: [C++][Gandiva] Change output format of castVARCHAR(timestamp) in Gandiva

Format timestamp to yyyy-MM-dd hh:mm:ss.sss

Closes #5014 from pprudhvi/timestamp-to-string and squashes the following commits:

3cfad34ba <Prudhvi Porandla> do not hardcode ts length
f1867e815 <Prudhvi Porandla> add java unittest
93c6bf490 <Prudhvi Porandla> use iomanip to format timestamp
35e74318a <Prudhvi Porandla> uset inttypes.h
c3ea53885 <Prudhvi Porandla> cast to long long int
1e389e2a6 <Prudhvi Porandla> use snprintf, return const char*
73c39f41e <Prudhvi Porandla> error message if out_len is negative
838947307 <Prudhvi Porandla> return empty string if out_len is zero
637562282 <Prudhvi Porandla> refactor
124b6dc34 <Prudhvi Porandla> correct castVarchar(timestamp) method

Authored-by: Prudhvi Porandla <prudhvi.porandla@icloud.com>
Signed-off-by: Pindikura Ravindra <ravindra@dremio.com>