Saving a UNIX timestamp in MySQL as type DOUBLE?

My function call takes some input, and throws it into a database. Usually, it's integers, but today, I need it to throw in a unix timestamp.

This overflew the FLOAT type, bu开发者_StackOverflow社区t works with type DOUBLE.

Is there anything I should be worried about by saving that 10-digit integer in type DOUBLE?

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The total precision of a DOUBLE PRECISION value is approximately 16 decimal digits, so you should not worry, even if you store milliseconds or microseconds.