Doubt SQL command

[olcelot]

I'vê got a bank that holds the entry and exit times of doctors in a hospital.
Need to get the range of these schedules 2 and offers them 30 in 30 minutes ... I don't have the slightest idea of how to do this, who can help I appreciate and ...

[rogenaro]

I have no way to test at the moment, you could do something like:

Code: Select all

select data_hora_intervalo
from
(
   select a.data_entrada + (b.rnum / 48)
   from  tabela_entrada_saida a
       , (
           select level rnum
           from dual connect by
           level <= (
                      select (nvl(dat_saida, sysdate) - dat_entrada) * 48
                      from   tabela_entrada_saida
                      where  id_medico = 1
                    )
         ) b
   where a.id_medico = 1
);

IE, you need to add n * (1/48) (1 day = 12:0 am, multiplied by 2 because the range should be every half hour) day at time of entry, where n would range from 1 to the number of intervals of 30 minutes between the input and output of the doctor (which is what the select from dual doing here).