mysql - Find intersection time between one date range and one time range -

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I am looking for a mysql query that will take a start date / end date and a start time / end time and calculate The time frame (in seconds) that interses the deadline to the time frame.

For example,

the end date of the date: 2011-09-01 from 18:00 to 2011-09-01 19:00:00

Start time to end time: 6 to 8 o'clock

In this case, the amount of time should be 3600 seconds.

MyScall: datatyph

mssql: dethithif

Oracle : DeadTef

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