Splitting single row into multiple based on column - sql

Question

I have certain number of rows as below:
| Material No | Quantity | Weight | Unit |
--------------------------------------------
| 111-22283/4 | 2 | 53 | kg |
| 123-ABC45/7 | 5 | 41 | g |
| 133-67879/80 | 7 | 31 | g |
| 144-54628 | 1 | 14 | kg |
Now I want to produce output like below:
| Material No | Quantity | Weight | Unit |
--------------------------------------------
| 111-22283 | 2 | 53 | kg |
| 111-22284 | 2 | 53 | kg |
| 123-ABC45 | 5 | 41 | g |
| 123-ABC46 | 5 | 41 | g |
| 123-ABC47 | 5 | 41 | g |
| 133-67879 | 7 | 31 | g |
| 133-67880 | 7 | 31 | g |
| 144-54628 | 1 | 14 | kg |
Logic: Based on the material no I have to split the rows. If '/' at end of the material no then it needs to be spilt. Then we have to find the difference b/w last number in the material no and the number /. If it is 2 then I want 2 different rows with each number as material number(Means if the last digit is 83/4 then I want material number ends with 83 and 84). The tricky part is when we are having 89/90. It will contain 2 number after / (only for 10's,20's etc.,). All other column will remain as same for each material no.
To achieve this ,currently we have a very big procedure which contains around 50-80 lines of code( find the row with '/' and remove separately then find the index of / and so on). I would like to know if this can be done with simple query or a very short procedure.

Answer 1

the challenging part is probably splitting the material no to get the starting and ending number.
After that, it is just a simple recursive query to increment the number and concatenate back to form the material no.
;with rcte as
(
select MaterialNo,
base, st, en, n = st,
material = convert(varchar(20), base + isnull(convert(varchar(10), st), ''))
from material m
-- get the position of the `/`
cross apply
(
select split = charindex('/', MaterialNo)
) s
-- extract the ending number and convert to integer
cross apply
(
select en = case when split > 0
then convert(int, right(MaterialNo, len(MaterialNo) - split))
end
) en
-- extract the starting number and convert to integer
cross apply
(
select st = case when split > 0
then convert(int, substring(MaterialNo, split - len(en), len(en)))
end
) st
-- extract the base material no for concatenate
cross apply
(
select base = case when split > 0
then left(MaterialNo, split - len(en) - 1)
else MaterialNo
end
) b
union all
select MaterialNo, base, st, en,
n = n + 1,
material = convert(varchar(20), base + convert(varchar(10), n + 1))
from rcte
where n < en
)
select *
from rcte
order by MaterialNo, material
all this is based on the assumption that the ending of material no is purely numeric.
Note : if you have a tally table, you can use that to replace the recursive cte

Answer 2

UPDATE
When a value from MATERIALNO can represent a series of values (as the updated question) :
DDL
CREATE FUNCTION UFN_STRTOSERIES (#materialNo VARCHAR(80), #qte INT, #weight INT, #unit VARCHAR(50))
RETURNS #result TABLE (
MATERIALNO VARCHAR(80),
QTE INT,
Weight INT,
UNIT VARCHAR(50)
)
AS
BEGIN
DECLARE #base VARCHAR(50) = LEFT(#materialNo,CHARINDEX('/',#materialNo)-1-LEN(RIGHT(#materialNo,LEN(#materialNo)-CHARINDEX('/',#materialNo))));
DECLARE #start INT = CONVERT( INT , RIGHT( LEFT(#materialNo,CHARINDEX('/',#materialNo)-1) , LEN(RIGHT(#materialNo,LEN(#materialNo)-CHARINDEX('/',#materialNo))) ) );
DECLARE #end INT = CONVERT( INT , RIGHT(#materialNo,LEN(#materialNo)-CHARINDEX('/',#materialNo)) );
DECLARE #i INT = #start;
WHILE #i <= #end
BEGIN
INSERT #result
SELECT CONCAT(#base,#i) AS MATERIALNO, #qte, #weight, #unit;
SET #i = #i + 1;
END;
RETURN
END;
CREATE TABLE MATERIALS
(
MATERIALNO VARCHAR(80),
QTE INT,
Weight INT,
UNIT VARCHAR(50)
)
INSERT INTO MATERIALS VALUES
('111-22283/4',2,53,'kg'),
('123-33345/7',5,41,'g' ),
('123-ABC45/7',5,41,'g'),
('133-67879/80',7,31,'g'),
('144-54628',1,14,'kg')
DML
SELECT MATERIALNO,QTE,Weight,UNIT
FROM (
SELECT MATERIALNO,QTE,Weight,UNIT
FROM MATERIALS
WHERE CHARINDEX('/',MATERIALNO) < 1
UNION
SELECT series.MATERIALNO,series.QTE,series.Weight,series.UNIT
FROM MATERIALS m
CROSS APPLY UFN_STRTOSERIES(MATERIALNO,QTE,Weight,UNIT) series
WHERE CHARINDEX('/',m.MATERIALNO) > 1
) base
ORDER BY base.MATERIALNO
OLD ANSWER
When a value from MATERIALNO represents only two values :
UNION is the easiest answer (then you have to check performances) :
DDL
CREATE TABLE MATERIALS
(
MATERIALNO VARCHAR(80),
QTE INT,
Weight INT,
UNIT VARCHAR(50)
)
INSERT INTO MATERIALS VALUES
('111-22283/4',2,53,'kg'),
('123-33345/7',5,41,'g' ),
('133-67879/80',7,31,'g'),
('144-54628',1,14,'kg' )
Query
SELECT MATERIALNO,QTE,Weight,UNIT
FROM (
SELECT MATERIALNO,QTE,Weight,UNIT
FROM MATERIALS
WHERE CHARINDEX('/',MATERIALNO) < 1
UNION
SELECT LEFT(MATERIALNO,CHARINDEX('/',MATERIALNO)-1),QTE,Weight,UNIT
FROM MATERIALS
WHERE CHARINDEX('/',MATERIALNO) > 1
UNION
SELECT
CONCAT(LEFT(MATERIALNO,CHARINDEX('/',MATERIALNO)-1-LEN(RIGHT(MATERIALNO,LEN(MATERIALNO)-CHARINDEX('/',MATERIALNO)))),RIGHT(MATERIALNO,LEN(MATERIALNO)-CHARINDEX('/',MATERIALNO))) AS MATERIALNO
,QTE,Weight,UNIT
FROM MATERIALS
WHERE CHARINDEX('/',MATERIALNO) > 1
) BASE
ORDER BY BASE.MATERIALNO
Fiddle : http://sqlfiddle.com/#!18/8e768/2