How to convert rows into columns

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I want to convert rows into columns. here is my sample table.

tbl_table

FId Type
6 Number
8 Name
15 Street
18 Address

Here is the query I have worked out.

SELECT SUBSTRING((SELECT ',' + CAST(FId AS VARCHAR) FROM tbl_table where Type in('Address','Street','Number','Name')FOR XML PATH('')), 2,10000) AS FID

I received output as

FId
6,8,15,18

It has been converted rows into columns, But my problem is,

I need the output in same order which input i have passed inside.

My expected output should be as

FId
18,15,6,8

Kindly resolve this problem.

What I have tried:

SELECT SUBSTRING((SELECT ',' + CAST(FId AS VARCHAR) FROM tbl_table where Type in('Address','Street','Number','Name')FOR XML PATH('')), 2,10000) AS FID

Posted 4-May-17 20:49pm

vinodh muthusamy

Updated 5-May-17 8:10am

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CHill60 5-May-17 7:03am

If I enter data into the table in the order you mention then I get your expected results "18,15,6,8".
If you are concerned in maintaining the order the records are entered into the table then you will need to record that in some way - either an IDENTITY column or a SEQUENCE (SQL 2012 and later)

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Richard Deeming · Answer 1 · 2017-05-05T08:10:00

You need to specify the desired order within the sub-query.

Try something like this:

SQL

SELECT STUFF(
    (SELECT ',' + CAST(FId As varchar(20)) 
    FROM tbl_table 
    WHERE [Type] IN ('Address', 'Street', 'Number', 'Name')
    ORDER BY CASE [Type] 
        WHEN 'Address' THEN 0 
        WHEN 'Street' THEN 1 
        WHEN 'Number' THEN 2 
        ELSE 3 
    END
    FOR XML PATH(''), TYPE).value('.', 'varchar(max)')
), 1, 1, '') AS FID

The STUFF function[^] avoids having to provide an end point for the substring operation.

And adding TYPE and .value('.', 'varchar(max)') ensures there won't be any XML-encoded text in the output, as described in this Simple Talk article[^].

shreyal acharya · Answer 2 · 2017-05-04T23:38:00

Declare @products varchar(200)
set @products= 'Address,Street,Number,Name'
Declare @individual varchar(20)
Declare @count varchar(200)
set @count = ''
WHILE LEN(@products) > 0
BEGIN
    IF PATINDEX('%,%', @products) > 0
    BEGIN
        SET @individual = SUBSTRING(@products,
                                    0,
                                    PATINDEX('%,%', @products))
         
        SET @products = SUBSTRING(@products,
                                  LEN(@individual + ',') + 1,
                                  LEN(@products))
		select @count = @count + ' ' + convert(varchar,fid) from tbl_table where [type] =@individual
		
    END
    ELSE
    BEGIN
        SET @individual = @products
        SET @products = NULL
        select @count = @count + ' ' + convert(varchar,fid) from tbl_table where [type] =@individual
        select @count
    END
END

How to convert rows into columns

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