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| create table #appels
(
id_call int,
id_sequence int,
type_call varchar(32),
agent varchar(32),
duration int,
)
insert into #appels values(1, 1, 'transfer', 'agent1', null)
insert into #appels values(1, 2, null, null, 60)
insert into #appels values(1, 3, 'transfer answer', 'agent2', null)
insert into #appels values(2, 1, 'transfer', 'agent3', null)
insert into #appels values(2, 2, null, null, 70)
insert into #appels values(2, 3, 'transfer', 'agent4', null)
insert into #appels values(2, 4, null, null, 80)
insert into #appels values(2, 5, 'transfer answer', 'agent5', null)
insert into #appels values(3, 1, 'other', 'agent1', null)
insert into #appels values(3, 2, null, null, 90)
insert into #appels values(3, 3, 'other', 'agent2', null)
select * from #appels
drop table #appels |