Table1?F
ID starttime overtime
A01 2001-9-4 2001-9-6
B01 2001-9-3 2001-9-5
Table2?F
ID state Num
A01 A 5
A01 B 3
B01 A 4
B01 B 2
Query result ?F
Time state Num
2001-9-3 A 4
2001-9-3 B 2
2001-9-4 A 9
2001-9-4 B 5
2001-9-5 A 9
2001-9-5 B 5
2001-9-6 A 5
2001-9-6 B 3
How to write this 'SQL' sentence ?
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