>>>When I do a insertion of a record I want to save not only the Timestamp like "HH;MM;SS" but I also want to store the microsecond part, since in 1 second a machine can store multiple records, ant I want to distinguish them by milli or microsecond.
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>>Why don't you let mysql handle it?
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>>... ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
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>It doesn't appear that MySQL's Timestamp has precision below seconds..?

In that case OP will have to store datetime value as a string in order to preserve milliseconds part