如何在SQL Server中查找非标识列中的间隙序列

我在下面这样的表中有一万多行，我想找出该列表序列号中缺失的空白

CI-480-1617
CI-481-1617
CI-482-1617
CI-483-1617
CI-484-1617
CI-485-1617
CI-486-1617
CI-487-1617
CW-095-1617

你能帮我吗

---

谢谢

如果没有样本数据，我无法测试解决方案，但在当前情况下，类似的内容可能会对您有所帮助：

WITH CTE AS -- end previous statement with semi colon
(
    SELECT SUBSTRING (ColumnA, 4,3) AS SeqNumb, 
         ROW_NUMBER() OVER (PARTITION BY SUBSTRING (ColumnA, 4,3) ORDER BY (SELECT 1)) AS RowNumb
FROM TableA
)

SELECT C.*, C2.RowNumb - C.RowNumb AS Gap
FROM CTE AS C
LEFT JOIN CTE AS C2 ON C.RowNumb = C2.RowNumb - 1

---

此解决方案基于一些假设，可以帮助您：

• 每行的第一部分是节
• 每行的第二部分是ID

表格创建：

CREATE TABLE [dbo].[Gaps] (
    [Text] nvarchar(50) NOT NULL
);

INSERT [dbo].[Gaps] ([Text])
VALUES 
    ('CI-480-1617'),
    ('CI-481-1617'),
    ('CI-482-1617'),
    ('CI-483-1617'),
    ('CI-484-1617'),
    ('CI-485-1617'),
    ('CI-486-1617'),
    ('CI-487-1617'),
    ('CW-095-1617');

WITH IDS (Section, Nmr) AS (
    SELECT 
        SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        CONVERT(int, SUBSTRING([Text], CHARINDEX('-', [Text]) + 1, CHARINDEX('-', [Text], CHARINDEX('|', [Text]))))
    FROM Gaps
    UNION ALL
    SELECT 
        DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        0
    FROM Gaps
    -- Uncomment next lines if you want to get the gap to some MAX value
    --UNION ALL
    --SELECT 
    --  DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
    --  1000
    --FROM Gaps
)
SELECT Section, StartNmr = cur + 1, EndNmr = nxt - 1
FROM (
    SELECT 
        Section, 
        cur = Nmr, 
        nxt = (
            SELECT MIN(B.Nmr)
            FROM IDS AS B
            WHERE B.Section = A.Section AND B.Nmr > A.Nmr
        )
    FROM IDS AS A
) AS D
WHERE nxt - cur > 1
ORDER BY Section, StartNmr

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CW       1         94

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CI       488       999
CW       1         94
CW       96        999

寻找差距：

CREATE TABLE [dbo].[Gaps] (
    [Text] nvarchar(50) NOT NULL
);

INSERT [dbo].[Gaps] ([Text])
VALUES 
    ('CI-480-1617'),
    ('CI-481-1617'),
    ('CI-482-1617'),
    ('CI-483-1617'),
    ('CI-484-1617'),
    ('CI-485-1617'),
    ('CI-486-1617'),
    ('CI-487-1617'),
    ('CW-095-1617');

WITH IDS (Section, Nmr) AS (
    SELECT 
        SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        CONVERT(int, SUBSTRING([Text], CHARINDEX('-', [Text]) + 1, CHARINDEX('-', [Text], CHARINDEX('|', [Text]))))
    FROM Gaps
    UNION ALL
    SELECT 
        DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        0
    FROM Gaps
    -- Uncomment next lines if you want to get the gap to some MAX value
    --UNION ALL
    --SELECT 
    --  DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
    --  1000
    --FROM Gaps
)
SELECT Section, StartNmr = cur + 1, EndNmr = nxt - 1
FROM (
    SELECT 
        Section, 
        cur = Nmr, 
        nxt = (
            SELECT MIN(B.Nmr)
            FROM IDS AS B
            WHERE B.Section = A.Section AND B.Nmr > A.Nmr
        )
    FROM IDS AS A
) AS D
WHERE nxt - cur > 1
ORDER BY Section, StartNmr

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CW       1         94

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CI       488       999
CW       1         94
CW       96        999

输出（无最大值）：

CREATE TABLE [dbo].[Gaps] (
    [Text] nvarchar(50) NOT NULL
);

INSERT [dbo].[Gaps] ([Text])
VALUES 
    ('CI-480-1617'),
    ('CI-481-1617'),
    ('CI-482-1617'),
    ('CI-483-1617'),
    ('CI-484-1617'),
    ('CI-485-1617'),
    ('CI-486-1617'),
    ('CI-487-1617'),
    ('CW-095-1617');

WITH IDS (Section, Nmr) AS (
    SELECT 
        SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        CONVERT(int, SUBSTRING([Text], CHARINDEX('-', [Text]) + 1, CHARINDEX('-', [Text], CHARINDEX('|', [Text]))))
    FROM Gaps
    UNION ALL
    SELECT 
        DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        0
    FROM Gaps
    -- Uncomment next lines if you want to get the gap to some MAX value
    --UNION ALL
    --SELECT 
    --  DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
    --  1000
    --FROM Gaps
)
SELECT Section, StartNmr = cur + 1, EndNmr = nxt - 1
FROM (
    SELECT 
        Section, 
        cur = Nmr, 
        nxt = (
            SELECT MIN(B.Nmr)
            FROM IDS AS B
            WHERE B.Section = A.Section AND B.Nmr > A.Nmr
        )
    FROM IDS AS A
) AS D
WHERE nxt - cur > 1
ORDER BY Section, StartNmr

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CW       1         94

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CI       488       999
CW       1         94
CW       96        999

输出（最大值）：

CREATE TABLE [dbo].[Gaps] (
    [Text] nvarchar(50) NOT NULL
);

INSERT [dbo].[Gaps] ([Text])
VALUES 
    ('CI-480-1617'),
    ('CI-481-1617'),
    ('CI-482-1617'),
    ('CI-483-1617'),
    ('CI-484-1617'),
    ('CI-485-1617'),
    ('CI-486-1617'),
    ('CI-487-1617'),
    ('CW-095-1617');

WITH IDS (Section, Nmr) AS (
    SELECT 
        SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        CONVERT(int, SUBSTRING([Text], CHARINDEX('-', [Text]) + 1, CHARINDEX('-', [Text], CHARINDEX('|', [Text]))))
    FROM Gaps
    UNION ALL
    SELECT 
        DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
        0
    FROM Gaps
    -- Uncomment next lines if you want to get the gap to some MAX value
    --UNION ALL
    --SELECT 
    --  DISTINCT SUBSTRING([Text], 1, CHARINDEX('-', [Text]) - 1),
    --  1000
    --FROM Gaps
)
SELECT Section, StartNmr = cur + 1, EndNmr = nxt - 1
FROM (
    SELECT 
        Section, 
        cur = Nmr, 
        nxt = (
            SELECT MIN(B.Nmr)
            FROM IDS AS B
            WHERE B.Section = A.Section AND B.Nmr > A.Nmr
        )
    FROM IDS AS A
) AS D
WHERE nxt - cur > 1
ORDER BY Section, StartNmr

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CW       1         94

-----------------------
Section  StartNmr  EndNmr
-----------------------
CI       1         479
CI       488       999
CW       1         94
CW       96        999

---

理想情况下，您应该将序列号作为完全独立的数字列。如果你需要经常这样做，那么这是一个值得做的改变。你的桌子看起来怎么样？你的数据看起来怎么样？这里的差距是什么？中间数的差距，由第一个和最后一个组成部分划分吗？请举例说明缺口是什么样子的。