SQL insert data to other table after split string - sql

Question

I have a table WCA:
ID TYPE ..
1 *1*3*5*
2 *1*5*
..
Now i want move data to new table WCA_TYPE:
ID WCA_ID TYPE
1 1 1
2 1 3
3 1 5
4 2 1
5 2 5
..
ID here is auto increase.
How to write sql in MS SQL server to split type from old table to multi type & insert it into new table.

Answer 1

DECLARE #CurID INT, #MaxID INT, #t VARCHAR(200)
SELECT #CurID = 1, #MaxID = MAX(ID) FROM WCA
WHILE #CurID <= #MaxID
BEGIN
SELECT #t = TYPE
FROM WCA
WHERE ID = #CurID
;WITH Pieces([Pos], [start], [stop]) AS (
SELECT 1, 1, CHARINDEX('*', #t)
UNION ALL
SELECT [Pos] + 1, [stop] + 1, CHARINDEX('*', #t, [stop] + 1)
FROM Pieces
WHERE [stop] > 0
)
INSERT INTO WCA_TYPE(WCA_ID, TYPE)
SELECT #CurID, T.Value
FROM
( SELECT [Pos], SUBSTRING(#t, start, CASE WHEN [stop] > 0 THEN [stop]-[start] ELSE 4000 END) AS [Value]
FROM Pieces
) T
WHERE T.Value <> ''
SET #CurID = #CurID + 1
END
SELECT *
FROM WCA_TYPE
look this fiddle

Answer 2

Assuming the your type column always have 3 digits you can use this.
INSERT INTO wca_type (WCA_id,type)
SELECT 1,SUBSTRING(CONVERT(nvarchar(MAX),type),1,1) FROM wca
UNION ALL
SELECT 1,SUBSTRING(CONVERT(nvarchar(MAX),type),2,1) FROM wca
UNION ALL
SELECT 1,SUBSTRING(CONVERT(nvarchar(MAX),type),3,1) FROM wca

Answer 3

You could use a recursive cte - e.g.
CREATE TABLE #WCA_TYPE
(ID INT IDENTITY(1, 1) PRIMARY KEY
,WCA_ID INT
,TYPE INT);
WITH sampleData(WCA_ID, TYPE) AS
(
SELECT
*
FROM ( VALUES ('1', '1*3*5')
,('2', '1*5')
) nTab(nCol1, nCol2)
)
,rep(WCA_ID, item, delim) AS
(
SELECT
WCA_ID
,TYPE item
,'*' delim
FROM sampleData
UNION ALL
SELECT
WCA_ID
,LEFT(item, CHARINDEX(delim, item, 1) - 1) item
,delim
FROM rep
WHERE (CHARINDEX(delim, item, 1) > 0)
UNION ALL
SELECT
WCA_ID
,RIGHT(item, LEN(item) - CHARINDEX(delim, item, 1)) item
,delim
FROM rep
WHERE (CHARINDEX(delim, item, 1) > 0)
)
INSERT #WCA_TYPE
(TYPE
,WCA_ID)
SELECT
item
,WCA_ID
FROM rep
WHERE (CHARINDEX(delim, item, 1) = 0)
ORDER BY WCA_ID
OPTION (MAXRECURSION 0);
SELECT * FROM #WCA_TYPE;

Answer 4

WITH CTE AS
(
select id,Type,0 as startPos,
CHARINDEX('*',TYPE)-1 as endPos from WCA
UNION ALL
select id,Type,endPos+2 as startPos,
CHARINDEX('*',TYPE,endPos+2)-1 as endPos from CTE
where CHARINDEX('*',TYPE,endPos+2)>0
)
INSERT INTO WCA_TYPE (WCA_ID, TYPE)
select ID,
CASE WHEN EndPos>0
THEN
Substring(Type,StartPos,EndPos-StartPos+1)
else
Type
end as Type
from CTE
where EndPos<>0
SQLFiddle Select demo