生成名称列的排列和组合

我有以下示例数据用于排列和组合。

create table tbltest
(
    name varchar(50),
    addres varchar(100)
);

insert into tbltest values('Sam Mak John','Street 1 HNo 101 USA');
insert into tbltest values('Donatella Nobatti','HNo 101 UK');
insert into tbltest values('Sam Buca','Main Road B Block UAE');
insert into tbltest values('Juan Soponatime','Hight Street CA');
insert into tbltest values('Aaron Spacemuseum','HNo A10 100 feet Road A Block ');

我想为中的name列生成排列和组合table tbltest并将其存储到中temp table。

对于示例预期结果：

name
----------------
John Mak Sam
John Sam Mak
Mak John Sam
Mak Sam John
Sam John Mak
Sam Mak John
....
....

尝试使用以下查询：源

注意：以下查询对单条记录的工作符合预期，但是当我使用游标尝试对表进行查询时，它的运行时间超过了35分钟，并且仍然保持运行状态。

DECLARE @inputStr VARCHAR(MAX)= 'Sam Mak John';
DECLARE @ValueStr VARCHAR(100);
DECLARE @Count INT, @Loop INT= 1, @totalSum INT;
DECLARE @Query1 VARCHAR(1000), @Query2 VARCHAR(1000), @Query3 VARCHAR(1000), @Query4 VARCHAR(1000), @Query5 VARCHAR(1000), @Query6 VARCHAR(1000), @Query VARCHAR(4000), @Combination VARCHAR(1000);

--Temporary table to capture all the words separately
CREATE TABLE #tmpvalues
(intIndex INT IDENTITY(1, 1), 
 intProc  INT, 
 subStr   VARCHAR(100)
);

--Temporary table to store all the possible combinations
CREATE TABLE #tmpCombinations
(subCombStr VARCHAR(1000)
);  

--get the sub-strings(words) from input statement into a temp table
WHILE LEN(@inputStr) > 0
    BEGIN
        SET @ValueStr = LEFT(@inputStr, ISNULL(NULLIF(CHARINDEX(' ', @inputStr) - 1, -1), LEN(@inputStr)));
        SET @inputStr = SUBSTRING(@inputStr, ISNULL(NULLIF(CHARINDEX(' ', @inputStr), 0), LEN(@inputStr)) + 1, LEN(@inputStr));
        INSERT INTO #tmpvalues
        VALUES
        (@Loop, 
         @ValueStr
        );
        SET @Loop = @Loop + 1;
    END;
SELECT @Count = MAX(intINDEX)
FROM #tmpvalues;
SET @Loop = 1;

--Set an integer values for each words
--This will be used to filter the combinations in which any two words are repating
DECLARE @tempIntAdd INT;--Addition factor
SET @tempIntAdd = @Loop * @Count;
WHILE @Loop <= (@Count - 1)
    BEGIN
        DECLARE @tempIntProc INT;
        SELECT @tempIntProc = intProc
        FROM #tmpvalues
        WHERE intIndex = @Loop;
        UPDATE #tmpvalues
          SET 
              intProc = @tempIntProc + @tempIntAdd
        WHERE intIndex = @Loop + 1;
        SET @Loop = @Loop + 1;
        SET @tempIntAdd = @tempIntAdd * 2;
    END;
--
SET @Loop = 1;
SET @Query1 = 'INSERT INTO #tmpCombinations SELECT DISTINCT ';
SET @Query2 = 'ALL_COMBINATIONS FROM';
SET @Query3 = ' ';
SET @Query4 = ' WHERE';
SET @Query5 = '(';
SET @Query6 = ')';

-- Generate the dynamic query to get permutations and combination of individual words
WHILE @Loop <= @Count
    BEGIN
        SELECT @ValueStr = subStr
        FROM #tmpvalues
        WHERE intIndex = @Loop;
        SET @Query1 = @Query1 + 'T' + CAST(@Loop AS VARCHAR) + '.subStr ';
        IF(@Loop < @Count)
            SET @Query1 = @Query1 + '+ '' '' + ';
        SET @Query3 = @Query3 + '#tmpvalues ' + 'T' + CAST(@Loop AS VARCHAR);
        IF(@Loop < @Count)
            SET @Query3 = @Query3 + ', ';
        SET @Query5 = @Query5 + 'T' + CAST(@Loop AS VARCHAR) + '.intProc';
        IF(@Loop < @Count)
            SET @Query5 = @Query5 + ' + ';
        SET @Loop = @Loop + 1;
    END;
SELECT @totalSum = SUM(intProc)
FROM #tmpvalues;

--Create final query
SET @Query = @Query1 + @Query2 + @Query3 + @Query4 + @Query5 + @Query6 + ' =' + CAST(@totalSum AS VARCHAR);

--Execute the dynamic Query
EXECUTE (@Query);

SELECT subCombStr from  #tmpCombinations

如果您将每个名称拆分为以下结构的单独表，

CREATE TABLE dbo.NameParts
(
  ID int NOT NULL,
  NamePart varchar(30) NOT NULL
);

（在其中ID标记名称属于相同名称的部分，以避免对不同名称的部分进行置换）–然后，您可以使用递归CTE来产生置换：

WITH
  permutations AS
  (
    SELECT
      ID = t.ID,
      FullNameVariation = CAST(t.NamePart AS varchar(500)),
      Level = COUNT(*) OVER (PARTITION BY t.ID)
    FROM
      dbo.NameParts AS t
    UNION ALL
    SELECT
      ID = t.ID,
      FullNameVariation = CAST(p.FullNameVariation + ' ' + t.NamePart AS varchar(500)),
      Level = p.Level - 1
    FROM
      dbo.NameParts AS t
      INNER JOIN permutations AS p ON t.ID = p.ID
    WHERE 1=1
      AND p.Level > 1
      AND ' ' + p.FullNameVariation + ' ' NOT LIKE '% ' + t.NamePart + ' %'
  )
SELECT
  ID,
  FullNameVariation
FROM
  permutations
WHERE
  Level = 1
ORDER BY
  ID,
  FullNameVariation
;

将查询应用于此数据样本：

INSERT INTO dbo.NameParts
VALUES
  (1, 'Sam'), (1, 'Mak'), (1, 'John'),
  (2, 'Donatella'), (2, 'Nobatti'),
  (3, 'Sam'), (3, 'Buca'),
  (4, 'Juan'), (4, 'Soponatime'),
  (5, 'Aaron'), (5, 'Spacemuseum')
;

产生以下输出：

ID  FullNameVariation
--  -----------------
1   John Mak Sam
1   John Sam Mak
1   Mak John Sam
1   Mak Sam John
1   Sam John Mak
1   Sam Mak John
2   Donatella Nobatti
2   Nobatti Donatella
3   Buca Sam
3   Sam Buca
4   Juan Soponatime
4   Soponatime Juan
5   Aaron Spacemuseum
5   Spacemuseum Aaron

您可以使用此解决方案发挥现场演示，在分贝<> fiddle.uk。