填充編號行，直到與另一列

Question

我有充分的帳號和期/貸款條件（貸款期限爲個月）的表達到特定值

我需要做的就是填充編號行對於每個小於或等於貸款期限的帳號。我已經把它貼在下面的屏幕截圖：

Example

因此，對於這個具體的例子，我將需要48個這個帳號數行，因爲該術語僅48個月。

感謝您的幫助！

Answer 1

with 
    test_data (account_nmbr, term) as (
     select 'ABC200', 6 from dual union all 
     select 'DEF100', 8 from dual 
    ) 
-- End of simulated inputs (for testing purposes only, not part of the solution). 
-- SQL query begins BELOW THIS LINE. 
select  level as row_nmbr, term, account_nmbr 
from  test_data 
connect by level <= term 
     and prior account_nmbr = account_nmbr 
     and prior sys_guid() is not null 
order by account_nmbr, row_nmbr -- If needed 
; 

    ROW_NMBR  TERM ACCOUNT_NMBR 
    -------- ---------- ------------ 
     1   6 ABC200 
     2   6 ABC200 
     3   6 ABC200 
     4   6 ABC200 
     5   6 ABC200 
     6   6 ABC200 
     1   8 DEF100 
     2   8 DEF100 
     3   8 DEF100 
     4   8 DEF100 
     5   8 DEF100 
     6   8 DEF100 
     7   8 DEF100 
     8   8 DEF100 

在Oracle 12，可以使用LATERAL子句相同：

with 
    test_data (account_nmbr, term) as (
     select 'ABC200', 6 from dual union all 
     select 'DEF100', 8 from dual 
    ) 
-- End of simulated inputs (for testing purposes only, not part of the solution). 
-- SQL query begins BELOW THIS LINE. 
select l.row_nmbr, t.term, t.account_nmbr 
from  test_data t, 
     lateral (select level as row_nmbr from dual connect by level <= term) l 
order by account_nmbr, row_nmbr -- If needed 
;