Correct timedelta value for negative MySQL TIME datatype #352
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1. minimum value for MySQL TIME datatype:
'-838:59:59.000000' = ADDTIME('-838:00:00', ADDTIME('-00:59:00', '-00:00:59'))
2. appropriate timedelta representation of the same value in Python:
datetime.timedelta(hours=-838, minutes=-59, seconds=-59)
= -1 * datetime.timedelta(hours=838, minutes=59, seconds=59)
'sign' must be multiplied to the entire timedelta value,
not just to the 'hours' value as in the existing code.
refer to convert_timedelta() in pymysql:
https://github.com/PyMySQL/PyMySQL/blob/master/pymysql/converters.py#L189
Datatype tests were modified to test the correct minimum value for TIME datatype.
Owner
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Sorry for the delay I will review shortly |
Collaborator
Author
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No worries, please take your time. |
Owner
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Release soon :) |
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minimum value for MySQL TIME datatype:
'-838:59:59.000000' = ADDTIME('-838:00:00', ADDTIME('-00:59:00', '-00:00:59'))
appropriate timedelta representation of the same value in Python:
datetime.timedelta(hours=-838, minutes=-59, seconds=-59)
= -1 * datetime.timedelta(hours=838, minutes=59, seconds=59)
'sign' must be multiplied to the entire timedelta,
not just to the 'hours' timedelta as in the existing code.
https://github.com/noplay/python-mysql-replication/blob/3de6ff499f7695a800409341f4f859cac5b724d0/pymysqlreplication/row_event.py#L287-L292
refer to convert_timedelta() in pymysql:
https://github.com/PyMySQL/PyMySQL/blob/fb10477caf21122a89d7f216a0670d49dd2aa5d2/pymysql/converters.py#L219-L227
Datatype tests were modified to test the correct minimum value for TIME datatype.