获取由最小值和最大值标识的组中的连续值

Question

我正在尝试从表中获取连续值组。我一直试图找到一个关于这个的例子，但我一直无法在我的情况下使用它。

这是我的一张桌子的一小部分。

    CardID      CardSerial                  CardStateID AssignUserID Denomination
    ----------- --------------------------- ----------- ------------ -------------
    2685680     214026002                   3           81           10
    2685681     214026003                   3           81           10
    2685682     214026004                   3           81           10
    2685683     214026005                   3           81           10
    2685684     214026006                   3           81           10
    2685778     214026100                   3           81           10
    2685779     214026101                   3           81           10
    2685780     214026102                   3           81           10
    2685781     214026103                   3           81           10
    2685782     214026104                   3           81           10
    2685878     214026200                   3           81           10
    2685879     214026201                   3           81           10
    2685880     214026202                   3           81           10
    2685881     214026203                   3           81           10
    2685882     214026204                   3           81           10
    2685883     214026205                   3           81           10
    2685884     214026206                   3           81           10

我期待的结果是：

    min value       max value       cant     Den
    --------------- --------------- -------- ----
    214026002       214026006        5        10
    214026100       214026104        5        10
    214026200       214026206        7        10

对我来说困难的部分是获得一个组值来进行查询

select min(cardSerial), max(cardSerial), count(*), Den
from Cards
group by Den, GROUPING_VALUE_GENERATED

Answer 1

假设cardSerial是 INT 或其他数字数据类型...

WITH
  sequenced AS 
(
  SELECT
    ROW_NUMBER() OVER (PARTITION BY Denomination ORDER BY cardSerial) AS sequence_id,
    *
  FROM
    Cards
)
SELECT
  min(cardSerial),
  max(cardSerial),
  count(*),
  Denomination
FROM
  Sequenced
GROUP BY
  Denomination,
  cardSerial - sequence_id
ORDER BY
  Denomination,
  cardSerial - sequence_id

如果它不是数字数据类型，请在查询中将其转换为适当大的数字数据类型以允许cardSerial - sequence_id工作。

计算如何cardSerial - sequence_id给出有意义的分组依据......

214026002 - 01 = 214026001
214026003 - 02 = 214026001
214026004 - 03 = 214026001
214026005 - 04 = 214026001
214026006 - 05 = 214026001
214026100 - 06 = 214026094
214026101 - 07 = 214026094
214026102 - 08 = 214026094
214026103 - 09 = 214026094
214026104 - 10 = 214026094
214026200 - 11 = 214026189
214026201 - 12 = 214026189
214026202 - 13 = 214026189
214026203 - 14 = 214026189
214026204 - 15 = 214026189
214026205 - 16 = 214026189
214026206 - 17 = 214026189