使用每個屬性具有多個值的映射表

Question

我已經遞過一個表t_mapping，其值爲[1..5]，[8..12]，15,16或17,18或20或[21。 .45]列prd_product_nl。我必須找到prd_product_nl我的價值觀來查找mapping_result（格式：導致一個或結果B和結果C或結果d）

我想查找的值是整數，且prd_product_nl中的數值數組按照升序排列，但是格式不同，如上所示。

作爲併發症，[1..5]表示描繪值1幷包括5

我可以寫一個查詢看起來我的整數，其中存在於不同的多個值的列 - 陣列 - 格式？

Answer 1

您可以通過分層查詢做到這一點：

with w1(list) as 
(
    select '[1..5],[8..12],15,16' from dual 
    union all 
    select '17,18' from dual 
    union all 
    select '[21..45]' from dual 
), 
w2 as 
(
    select distinct w1.list, regexp_substr(w1.list, '[^,]+', 1, level) part 
    from w1 
    connect by regexp_instr(w1.list, '[^,]+', 1, level) != 0 
    order by w1.list 
), 
w3 as 
(
    select w2.*, 
     regexp_replace(w2.part, '\[(\d+)\.\.(\d+)]', '\1', 1) lower_bound, 
     regexp_replace(w2.part, '\[(\d+)\.\.(\d+)]', '\2', 1) upper_bound 
    from w2 
) 
select distinct w3.*, w3.lower_bound + level - 1 item 
from w3 
connect by level <= w3.upper_bound - w3.lower_bound + 1 
order by 1, 5 
; 

這給：

LIST     PART  LOWER_BOUND UPPER_BOUND ITEM 
17,18     17   17    17    17 
17,18     18   18    18    18 
[1..5],[8..12],15,16 [1..5]  1    5    1 
[1..5],[8..12],15,16 [1..5]  1    5    2 
[1..5],[8..12],15,16 [1..5]  1    5    3 
[1..5],[8..12],15,16 [1..5]  1    5    4 
[1..5],[8..12],15,16 [1..5]  1    5    5 
[1..5],[8..12],15,16 [8..12]  8    12    8 
[1..5],[8..12],15,16 [8..12]  8    12    9 
[1..5],[8..12],15,16 [8..12]  8    12    10 
[1..5],[8..12],15,16 [8..12]  8    12    11 
[1..5],[8..12],15,16 [8..12]  8    12    12 
[1..5],[8..12],15,16 15   15    15    15 
[1..5],[8..12],15,16 16   16    16    16 
[21..45]    [21..45] 21    45    21 
[21..45]    [21..45] 21    45    22 
[21..45]    [21..45] 21    45    23 
[21..45]    [21..45] 21    45    24 
[21..45]    [21..45] 21    45    25 
[21..45]    [21..45] 21    45    26 
[21..45]    [21..45] 21    45    27 
[21..45]    [21..45] 21    45    28 
[21..45]    [21..45] 21    45    29 
[21..45]    [21..45] 21    45    30 
[21..45]    [21..45] 21    45    31 
[21..45]    [21..45] 21    45    32 
[21..45]    [21..45] 21    45    33 
[21..45]    [21..45] 21    45    34 
[21..45]    [21..45] 21    45    35 
[21..45]    [21..45] 21    45    36 
[21..45]    [21..45] 21    45    37 
[21..45]    [21..45] 21    45    38 
[21..45]    [21..45] 21    45    39 
[21..45]    [21..45] 21    45    40 
[21..45]    [21..45] 21    45    41 
[21..45]    [21..45] 21    45    42 
[21..45]    [21..45] 21    45    43 
[21..45]    [21..45] 21    45    44 
[21..45]    [21..45] 21    45    45