Apply WHILE logic on Row-by-Row processing with Cursor - sql-server

Question

I have T-SQL script that is parsing the MDX expression. It looks as:
IF OBJECT_ID ( 'tempdb..#metrics' ) IS NOT NULL
DROP TABLE #metrics
CREATE TABLE #metrics (
Metric VARCHAR(255)
)
---
DECLARE #counter INT = 1
DECLARE #mdx VARCHAR(4000) = 'SELECT {[Measures].[One],[Measures].[Two],[Measures].[Three],[Measures].[Four]} DIMENSION, PROPERTIES OTHER'
DECLARE #startString INT
DECLARE #endString INT
DECLARE #metric VARCHAR(200)
WHILE (1=1)
BEGIN
-- loop data and process them
SET #startString = (SELECT PATINDEX('%[[]Measures%',#mdx))
SET #endString = (SELECT CHARINDEX(',',#mdx))
SET #metric = (SELECT SUBSTRING(#mdx, #startString, #endString - #startString))
IF #metric LIKE '%}%'
BEGIN
SET #metric = LEFT(#metric, CHARINDEX('}',#metric) - 1)
INSERT INTO #metrics ( Metric ) SELECT #metric
SET #mdx = REPLACE(#mdx, #metric, '')
END
ELSE
BEGIN
INSERT INTO #metrics ( Metric ) SELECT #metric
SET #metric = #metric + ','
SET #mdx = REPLACE(#mdx, #metric, '')
END
-- break while
IF #mdx NOT LIKE '%[[]Measures%,%'
BEGIN
BREAK;
END
END
---
SELECT * FROM #metrics
Now, I need to apply this on more rows, but did not figure out how. I tried it with cursor, but it never ends. How to loop the logic on the following rows?
DECLARE #srcTable TABLE (
ID INT
,textData VARCHAR(4000)
)
INSERT INTO #srcTable ( ID, textData ) ( 1, 'SELECT {[Measures].[One],[Measures].[Two],[Measures].[Three],[Measures].[Four]} DIMENSION, PROPERTIES OTHER' )
,(2, 'SELECT {[Measures].[Five],[Measures].[Six],[Measures].[Seven]} DIMENSION, PROPERTIES OTHER' )
Desired Result:
1 [Measures].[One]
1 [Measures].[Two]
1 [Measures].[Three]
1 [Measures].[Four]
2 [Measures].[Five]
2 [Measures].[Six]
2 [Measures].[Seven]

Answer 1

DECLARE #t TABLE (
ID INT,
Metric VARCHAR(255)
)
INSERT INTO #t
VALUES
(1, 'SELECT {[Measures].[One],[Measures].[Two],[Measures].[Three],[Measures].[Four]} DIMENSION, PROPERTIES OTHER'),
(2, 'SELECT {[Measures].[Five],[Measures].[Six],[Measures].[Seven]} DIMENSION, PROPERTIES OTHER')
SELECT r.ID, item = t.c.value('.', 'VARCHAR(255)')
FROM (
SELECT *, txml = CAST('<r>' + REPLACE(Metric, ',', '</r><r>') + '</r>' AS XML)
FROM (
SELECT ID, Metric = SUBSTRING(Metric, CHARINDEX('{',Metric) + 1, CHARINDEX('}',Metric) - CHARINDEX('{',Metric) - 1)
FROM #t
) t
) r
CROSS APPLY txml.nodes('/r') t(c)
Output -
ID item
----------- -----------------------
1 [Measures].[One]
1 [Measures].[Two]
1 [Measures].[Three]
1 [Measures].[Four]
2 [Measures].[Five]
2 [Measures].[Six]
2 [Measures].[Seven]