Find the continuous block of numbers - using queries
Hi allI have a vision that has places available for sale. View has a row for each available place. I'll try to find block of seats in places like this
Bench dry (from - to) Qty.
A1 1 2 17 - 18
A3 4 2 90 - 91
A3 4 4 94 - 97
A8 14 2 45 - 46
A8 14 49 - 51 3
A8 14 54 - 58 5
14 61 - 62 2 A8
-Table and data Script-
create table (available)
s varchar2 (5).
rows1 varchar2 (5).
seat number (3)
);
insert into available (sec, rows1, seat) values ('A1', '1', 17);
insert into available (sec, rows1, seat) values ('A1', '1', 18);
insert into available (sec, rows1, seat) values ('3', '4', 90);
insert into available (sec, rows1, seat) values ('3', '4', 91);
insert into available (sec, rows1, seat) values ('3', '4', 94);
insert into available (sec, rows1, seat) values ('3', '4', 95);
insert into available (sec, rows1, seat) values ('3', '4', 96);
insert into available (sec, rows1, seat) values ('3', '4', 97);
insert into available (sec, rows1, seat) values ('A8', '14', 45);
insert into available (sec, rows1, seat) values ('A8', '14', 46);
insert into available (sec, rows1, seat) values ('A8', '14', 49);
insert into available (sec, rows1, seat) values ('A8', '14', 50);
insert into available (sec, rows1, seat) values ('A8', '14', 51);
insert into available (sec, rows1, seat) values ('A8', '14', 54);
insert into available (sec, rows1, seat) values ('A8', '14', 55);
insert into available (sec, rows1, seat) values ('A8', '14', 56);
insert into available (sec, rows1, seat) values ('A8', '14', 57);
insert into available (sec, rows1, seat) values ('A8', '14', 58);
insert into available (sec, rows1, seat) values ('A8', '14', 61);
insert into available (sec, rows1, seat) values ('A8', '14', 62);
----------------------------------------------------
I'm going in a position so far
Select sec, seat, rows1, next_seat, (next_seat - seat) gap
de)
Select dry, seat, rows1, LEAD (seat) OVER (PARTITION BY s, order of rows1 per seat) next_seat
of available
)
Thanks in advance for you help,
Ngoyi,
Houston-Texas
with t1 as (
select sec,
rows1,
seat,
case lag(seat) over(partition by sec,rows1 order by seat)
when seat - 1 then 0
else 1
end start_of_group
from availables
),
t2 as (
select sec,
rows1,
seat,
sum(start_of_group) over(partition by sec,rows1 order by seat) grp
from t1
)
select sec "Sec",
rows1 "Row",
min(seat) || ' - ' || max(seat) "Seat (From-To)",
max(seat) - min(seat) + 1 "Qty"
from t2
group by sec,
rows1,
grp
order by sec,
rows1,
grp
/
Sec Row Seat (From-To) Qty
----- ----- -------------------- ----------
A1 1 17 - 18 2
A3 4 90 - 91 2
A3 4 94 - 97 4
A8 14 45 - 46 2
A8 14 49 - 51 3
A8 14 54 - 58 5
A8 14 61 - 62 2
7 rows selected.
SQL>
SY.
Tags: Database
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