Split one column to multiple columns but data will

2019-02-16 00:12发布

问题:

I have a set of row in my database that look like this:

Mr Joe Bloggs
Joe Bloggs
Joe Jim Bloggs
Joe Jim David Bloggs
Mr Joe Jim Bloggs
Mr Joe Jim David Bloggs

Output required:

Title | First Name | Middle Name | Surname
------------------------------------------
Mr | Joe | x | Bloggs
x | Joe | x | Bloggs
x | Joe | Jim | Bloggs
x | Joe | Jim David | Bloggs
Mr | Joe | Jim | Bloggs
Mr | Joe | Jim David | Bloggs

This will be run in a SQL Stored Procedure. What i need is this output generated while looping through a CURSOR and the 4 variables to update the 4 columns in the database. But as you can see the data is in 1 column and varies.

I am finding it hard to understand the best way of doing this and would like your help please. Let me know if you need anything else.

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EDIT:

    --Temporary Table to Merge the full name together in order to split by comma. Each split will have a unique record but with the same address information for each name. 
    CREATE TABLE #TempOutput
    (
        ClientReference varchar(MAX),
        Prefix varchar(MAX),
        Reference int,
        MergedFullName varchar(MAX),
        FormatName varchar(MAX),
        Title varchar(MAX),
        FirstName varchar(MAX),
        MiddleName varchar(MAX),
        Surname varchar(MAX)
    )

    DECLARE @Ref varchar(MAX)
    DECLARE @Prefix varchar(MAX)
    DECLARE @Reference int
    DECLARE @MergedName varchar(MAX)
    DECLARE @FormatName varchar(MAX)
    DECLARE @Title varchar(MAX)
    DECLARE @FirstName varchar(MAX)
    DECLARE @MiddleName varchar(MAX)
    DECLARE @Surname varchar(MAX)

    DECLARE ExtraNameSplitCursor CURSOR FOR
        SELECT 
            [Client Reference], 
            Prefix,
            Reference,
            CASE 
                WHEN LEFT(Surname,3) = 'Mr,' THEN (Title + ' ' + [First Name] + ' ' + [Middle Name] + ' ' + Replace(Surname,'Mr,',''))
                WHEN LEFT(Surname,4) = 'Mrs,' THEN (Title + ' ' + [First Name] + ' ' + [Middle Name] + ' ' + Replace(Surname,'Mrs,',''))
                ELSE (Title + ' ' + [First Name] + ' ' + [Middle Name] + ' ' + Surname) 
            END AS [Merged Full Name]
        FROM #StartResults

    OPEN ExtraNameSplitCursor

    FETCH NEXT FROM ExtraNameSplitCursor INTO @Ref, @Prefix, @Reference, @MergedName
    WHILE @@FETCH_STATUS = 0
        BEGIN
            INSERT INTO #TempOutput (ClientReference, Prefix, Reference, MergedFullName) 
            SELECT @Ref, @Prefix, @Reference, GUID, FROM dbo.fn_SPLIT_LIST_STRING (@MergedName)

            --SELECT CASE 
            --  WHEN @FormatName.GUID = 'Mr ' THEN @Title = 'Mr'
            --  WHEN LEFT(@MergedName,4) = 'Mrs ' THEN @Title = 'Mrs' 
            --  WHEN LEFT(@MergedName,5) = 'Miss ' THEN @Title = 'Miss'
            --  WHEN LEFT(@MergedName,3) = 'Ms ' THEN @Title = 'Ms'
            --  WHEN LEFT(@MergedName,3) = 'Dr ' THEN @Title = 'Dr'
            --  WHEN LEFT(@MergedName,4) = 'Rev ' THEN @Title = 'Rev'
            --  WHEN LEFT(@MergedName,5) = 'Lord ' THEN @Title = 'Lord'
            --  ELSE @Title = '' 
            --END AS Title,
            --CASE 
            --  WHEN MID(@MergedName,2,1) = ' ' THEN @FirstName = '' ELSE @FirstName = CHARINDEX(' ', MergedFullName + ' ') FROM #TempOutput AS FirstName

            FETCH NEXT FROM ExtraNameSplitCursor INTO @Ref, @Prefix, @Reference, @MergedName, @FlatNo, @HouseName, @HouseNo, @Street, @District, @PostTown, @County, @PostCode
        END

    CLOSE ExtraNameSplitCursor
    DEALLOCATE ExtraNameSplitCursor

    --Select statement for temporary table
    SELECT 
        ISNULL(ClientReference,'') AS ClientReference,
        ISNULL(Prefix,'') AS Prefix,
        ISNULL(Reference,'') AS Reference,
        ISNULL(MergedFullName,'') AS MergedFullName, 
        ISNULL(Title,'') AS Title,
        ISNULL(FirstName,'') AS FirstName,
        ISNULL(MiddleName,'') AS MiddleName,
        ISNULL(Surname,'') AS Surname

    FROM #TempOutput Result
    ORDER BY ClientReference
    for xml auto

    --Drop all temporary tables
    DROP TABLE #TempOutput
    DROP TABLE #StartResults

END

回答1:

I have resolved my issue and thanks for the clues and help.

I have basically added a 2nd cursor which does the following:

  • Grab the Merged Full Name field and put into a temporary variable.
  • Checks the title by running a case statement to check Mr, Mrs etc. else enter blank string into Title.
  • Update Title Trim the title of the Merged Full Name
  • Check the surname by RIGHT(@TempName, CHARINDEX(' ', REVERSE(@TempName)) - 1) and assume that this is the surname.
  • Update Surname Trim and Replace this of the Merged Full Name
  • Check the left for First Name by LEFT(@TempName, CHARINDEX(' ',
    @TempName + ' ') -1)
  • Update First Name Trim and Replace this of the Merged Full Name
  • Anything else is put in the middle name.

Bit long winded but in 99.9% cases in my database it formats pefectly.

If you would like the above code let me know.

Thank you for you time.