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7.6

Complex SELECT statement in DB2

Asked by shafiq_rehman in Databases Miscellaneous

Tags: db2

Hi,
i have two tables. total_time contains total time while busy_time contains the busy time (i.e. time
which has been assigned).tt_id is PK in total_time and FK in busy_time. bt_id is PK in busy_time.

1.total_time
 tt_id  start_time,    end_time
 1      01:00:00       20:00:00
 2      01:00:00       24:00:00
 3      03:00:00       10:00:00
2.busy_time
 tt_id   bt_id  start_time  end_time
 1       100    03:00:00    04:00:00
 1       101    06:00:00    07:00:00
 2       102    02:30:00    06:00:00

Now i want to write a SELECT statement in DB2 which returns avaiable time(which is still not busy) in the following
format. (Format is necessary)
tt_id  a_start_time   a_end_time
1      01:00:00       02:59:00
1      04:01:00       05:59:00
1      07:01:00       20:00:00
2      01:00:00       02:29:00
2      06:01:00       24:00:00
3      03:00:00       10:00:00

Please respond.
 
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Zone: Databases Miscellaneous
Tags: db2
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Solution Provided By: Netminder
Participating Experts: 3
Solution Grade: A
 
 
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