Add column to SQL result with unique rows - sql

Question

I have an query where I get a comma seperated string as result, such as;
n,n,n,n
where n can be 0 or 1, and will always be the length of four digits.
I use CROSS APPLY STRING_SPLIT to get the result as rows. I would like to add a column to this result, and on each row have an unique string, which would be one word.
Like:
Value|String
1 | description1
0 | description2
1 | description3
1 | description4
I have googled a lot, but can't seem to find how to do this. I hope it is as easy as something like:
SELECT myResultAsRows.Value, {'a','b','c','d'} AS String
FROM table
CROSS APPLY STRING_SPLIT ...
WHERE ...
I know this seems strange, but on another forum (specific for the tool) they suggested hard-coding it...
I also know it might depend on the server used, but in general, is something like this doable?
As of right now, the query is this:
SELECT tagValueRow.Value
FROM t_objectproperties tag
CROSS APPLY STRING_SPLIT(tag.Value,',') tagValueRow
WHERE tag.Object_ID = #OBJECTID# AND tag.Property = 'myTagName'
which results in
Value
1
0
1
1
for the specified #OBJECTID#.
Thank you!
edit: made the question more detailed, with example closer to reality.

Answer 1

I think using ROW_NUMBER() and SUBSTRING it can be acomplished easily.
Somethink like:
SELECT TOP 26 SUBSTRING('abcdefghijklmnopqrstuvwxyz',
ROW_NUMBER() OVER (ORDER BY sort_field), 1), *
FROM table
It has it limitation: the lenght of 'abc..' string, but with TOP will avoid errors.
Update
It can be done in the same way using the same approach of ROW_NUMBER and a JOIN:
SELECT TOP 5 T.Value, D.Label
FROM (
SELECT ROW_NUMBER() OVER (ORDER BY Field) AS Position, tagValueRow.Value AS Value
FROM t_objectproperties tag
CROSS APPLY STRING_SPLIT(tag.Value,',') tagValueRow
WHERE tag.Object_ID = #OBJECTID# AND tag.Property = 'myTagName') T
LEFT JOIN (
VALUES
(1, 'description1'),
(2, 'description2'),
(3, 'description3'),
(4, 'description4'),
(5, 'description5')) D(Position, Label) ON T.Position=D.Position

Answer 2

CREATE TABLE Testdata
(
ID INT,
String VARCHAR(MAX)
)
CREATE TABLE TestList
(
ID INT,
String VARCHAR(MAX)
)
INSERT Testdata SELECT 1,'1,0,1,1'
INSERT TestList SELECT 1,'a,b,c,d'
;WITH tmp(ID,DataItem, String) AS
(
SELECT
ID,
LEFT(String, CHARINDEX(',', String + ',') - 1),
STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM Testdata
UNION ALL
SELECT
ID,
LEFT(String, CHARINDEX(',', String + ',') - 1),
STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM tmp
WHERE
String > ''
),
tmp2(ID,DataItem, String) AS (
SELECT
ID,
LEFT(String, CHARINDEX(',', String + ',') - 1),
STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM TestList
UNION ALL
SELECT
ID,
LEFT(String, CHARINDEX(',', String + ',') - 1),
STUFF(String, 1, CHARINDEX(',', String + ','), '')
FROM tmp2
WHERE
String > ''
)
SELECT
p.DataItem,q.DataItem
FROM tmp AS p
CROSS APPLY
(SELECT * FROM tmp2) AS q
--ORDER BY SomeID
DataItem | DataItem
:------- | :-------
1 | a
0 | a
1 | a
1 | a
1 | b
0 | b
1 | b
1 | b
1 | c
0 | c
1 | c
1 | c
1 | d
0 | d
1 | d
1 | d
db<>fiddle here

Answer 3

If all you need is for each split row to have a value against it in no particular order, then we can cross-join a VALUES table to it based on row-number:
SELECT tagValueRow.Value, desc.description
FROM t_objectproperties tag
CROSS APPLY (
SELECT *, ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS rn
FROM STRING_SPLIT(tag.Value,',') tagValueRow
) tagValueRow
INNER JOIN (VALUES -- or LEFT JOIN
('desciption1', 1),
('desciption2', 2),
('desciption3', 3),
('desciption4', 4),
) desc (description, rn) ON desc.rn = tagValueRow.rn
WHERE tag.Object_ID = #OBJECTID# AND tag.Property = 'myTagName'
If you may have more than 4 split avlues, but only want a description against the first 4, change the INNER JOIN to LEFT