Generate between two dates in different rows SQL - sql

Question

I am working on generating lines depending on the days (a row by day) between two dates. I would have in the first row the first date and in the second row the second date but it all depends on the ID and the money. I consider it is better to show you with an example:
The origin table:
My target:
Could be possible with a loop?
Thank you very much.

Answer 1

You can use a recursive sub-query factoring clause:
WITH dt_range ( id, dt, next_dt, money ) AS (
SELECT id,
dt,
LEAD(dt) OVER (PARTITION BY id ORDER BY dt),
money
FROM table_name
UNION ALL
SELECT id,
dt + INTERVAL '1' DAY,
next_dt,
money
FROM dt_range
WHERE dt + INTERVAL '1' DAY < next_dt
)
SEARCH DEPTH FIRST BY dt SET dt_order
SELECT id, dt, money FROM dt_range;
Which, for your sample data:
CREATE TABLE table_name ( id, dt, money ) AS
SELECT 500, DATE '2017-02-23', 3500 FROM DUAL UNION ALL
SELECT 500, DATE '2017-02-26', 35000 FROM DUAL UNION ALL
SELECT 500, DATE '2017-02-28', 50000 FROM DUAL UNION ALL
SELECT 200, DATE '2020-05-01', 8888 FROM DUAL UNION ALL
SELECT 200, DATE '2020-05-05', 999 FROM DUAL UNION ALL
SELECT 200, DATE '2020-05-09', 1000 FROM DUAL;
Outputs:
ID
DT
MONEY
500
23-FEB-17
3500
500
24-FEB-17
3500
500
25-FEB-17
3500
500
26-FEB-17
35000
500
27-FEB-17
35000
500
28-FEB-17
50000
200
01-MAY-20
8888
200
02-MAY-20
8888
200
03-MAY-20
8888
200
04-MAY-20
8888
200
05-MAY-20
999
200
06-MAY-20
999
200
07-MAY-20
999
200
08-MAY-20
999
200
09-MAY-20
1000
db<>fiddle here
If you are using Oracle 11g then it has bugs iterating over dates; this can be easily fixed by iterating over a number and then adding it to a date (rather than iterating directly on the date):
WITH dt_range ( id, dt, offset, next_dt, money ) AS (
SELECT id,
dt,
0,
LEAD(dt) OVER (PARTITION BY id ORDER BY dt),
money
FROM table_name
UNION ALL
SELECT id,
dt,
offset + 1,
next_dt,
money
FROM dt_range
WHERE dt + offset + 1 < next_dt
)
SEARCH DEPTH FIRST BY dt SET dt_order
SELECT id, dt + offset AS dt, money FROM dt_range;
db<>fiddle here

Answer 2

for example:
with
simple_data( id,dates,money) as
(
select 500, date '2017-02-23', 3500 from dual union all
select 500, date '2017-02-26', 35000 from dual union all
select 500, date '2017-02-28', 50000 from dual union all
select 200, date '2020-05-01', 8888 from dual union all
select 200, date '2020-05-05', 999 from dual union all
select 200, date '2020-05-09', 1000 from dual
)
,step1 as
(
select
sd.id,
sd.money,
sd.dates,
lead (dates,1,dates) over(partition by id order by dates)-1 lead_dts
from simple_data sd
)
select
st1.id,
st1.dates + to_number(t.column_value)-1 as dates,
st1.money
from step1 st1,table(cast(multiset(select level from dual connect by level<= st1.lead_dts-st1.dates+1) as ora_mining_varchar2_nt)) t
order by id desc,dates;
----OR------
with
simple_data( id,dates,money) as
(
select 500, date '2017-02-23', 3500 from dual union all
select 500, date '2017-02-26', 35000 from dual union all
select 500, date '2017-02-28', 50000 from dual union all
select 200, date '2020-05-01', 8888 from dual union all
select 200, date '2020-05-05', 999 from dual union all
select 200, date '2020-05-09', 1000 from dual
)
,step1 as
(
select
sd.id,
sd.money,
sd.dates,
lag (dates,1,dates) over(partition by id order by dates desc) lag_dts
from simple_data sd
)
select
st1.id,
st1.lag_dts - to_number(t.column_value) as dates,
st1.money
from step1 st1,table(cast(multiset(select st1.lag_dts-st1.dates - level +1 from dual connect by level<= st1.lag_dts-st1.dates) as ora_mining_varchar2_nt)) t
order by id desc,dates;
12c and later:
with
simple_data( id,dates,money) as
(
select 500, date '2017-02-23', 3500 from dual union all
select 500, date '2017-02-26', 35000 from dual union all
select 500, date '2017-02-28', 50000 from dual union all
select 200, date '2020-05-01', 8888 from dual union all
select 200, date '2020-05-05', 999 from dual union all
select 200, date '2020-05-09', 1000 from dual
)
,step1 as
(
select
sd.id,
sd.money,
sd.dates,
lead (dates,1,dates) over(partition by id order by dates)-1 lead_dts
from simple_data sd
)
select
st1.id,
st1.dates + t.lvl-1 as dates,
st1.money
from step1 st1,lateral(select level lvl from dual connect by level<= st1.lead_dts-st1.dates+1) t
order by id desc,dates;
---OR-----
with
simple_data( id,dates,money) as
(
select 500, date '2017-02-23', 3500 from dual union all
select 500, date '2017-02-26', 35000 from dual union all
select 500, date '2017-02-28', 50000 from dual union all
select 200, date '2020-05-01', 8888 from dual union all
select 200, date '2020-05-05', 999 from dual union all
select 200, date '2020-05-09', 1000 from dual
)
,step1 as
(
select
sd.id,
sd.money,
sd.dates,
lag (dates,1,dates) over(partition by id order by dates desc) lag_dts
from simple_data sd
)
select
st1.id,
st1.lag_dts - t.lvl as dates,
st1.money
from step1 st1,lateral(select st1.lag_dts-st1.dates - level +1 lvl from dual connect by level<= st1.lag_dts-st1.dates ) t
order by id desc,dates;