That s mean there is no activity dates. For example if we talk about IDEmp = 1

How can I get these result

2009-01-01 Busy

2009-01-02 Busy

2009-01-03 Free

2009-01-04 Free

...

2009-01-09 Free

2009-01-10 Busy

2009-01-11 Busy

2009-01-12 Free

...

2009-01-19...