How to get the timestamp without milliseconds?

You can use CURRENT_TIMESTAMP which accepts a parameter, millisecond precision you want. Example:

select CURRENT_TIMESTAMP, CURRENT_TIMESTAMP(1), CURRENT_TIMESTAMP(0)
from RDB$DATABASE

Would return something like:

2010-02-26, 15:14:17.180
2010-02-26, 15:14:17.100
2010-02-26, 15:14:17.000

So, simply use CURRENT_TIMESTAMP(0).

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