SECOND(text/date,format)
Returns the second of a specified time. The returned value is an integer ranging from 0 to 59.
text/date
Represents the time from which the second is to be extracted.
Format
Value
The function allows the parameters to be empty. That is to say, you can simply use SECOND(). When the parameters are empty, the function returns the second of the current system server time.
If any parameter is NULL, the result is NULL.
SECOND()
2, corresponding to the system server time at 2020-10-23 15:36:02.
SECOND("15:36:25")
25
SECOND("15:36:25","HH:mm:ss")
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