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SQl Parsing

Posted on 2014-04-17
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Last Modified: 2014-04-23
I have the following field in the database of type varchar
30|30|30|30|30|30|30|30|
How can I pull the first 30 out and then add up the rest like 30+30+30+30+30+30+30
The data keeps varying sometimes 4|4|4|4|4|4|4|4|4|4|..
its like any number
n|n|n|n
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Question by:Star79
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5 Comments
 
LVL 34

Expert Comment

by:ste5an
ID: 40007156
Column, not field. E.g.

DECLARE @NumbersToStrip INT = 3;
DECLARE @WeirdSample TABLE ( Data NVARCHAR(MAX) );

INSERT INTO @WeirdSample
VALUES	( '30|30|30|30|30|30|30|30' ),
	( '4|4|4|4|4|4|4|4|4|4' );

WITH Number AS (
		SELECT	Data,
			SUBSTRING( Data, 1, CHARINDEX('|', Data) - 1 ) AS Number
		FROM	@WeirdSample
	),
	Occurances AS (
		SELECT	Data,
			Number,
			LEN(REPLACE(Data, Number, '')) + 1 AS Occurances
		FROM	Number
	),
	[Values] AS (
		SELECT	Data,
			Number,
			Occurances,
			Number * (Occurances - @NumbersToStrip) AS Value
		FROM	Occurances
	)
	SELECT	*,
		CASE WHEN [Value] < 0 THEN 0
			ELSE [Value]
		END AS FinalValue
	FROM	[Values];

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Author Comment

by:Star79
ID: 40007180
ste5an;
the sample can be like 60|50|35|35| as well the numbers need not be the same.Can you please modify the query
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LVL 34

Expert Comment

by:ste5an
ID: 40007202
No, your definition says its "n|n|n|n".
0
 

Author Comment

by:Star79
ID: 40007219
sorry I mean to say integer 0 to n
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LVL 34

Accepted Solution

by:
ste5an earned 500 total points
ID: 40007256
Then use a split function like Tally OH! An Improved SQL 8K “CSV Splitter” Function. E.g.

DECLARE @NumbersToStrip INT = 3;
DECLARE @WeirdSample TABLE ( Data NVARCHAR(MAX) );

INSERT INTO @WeirdSample
VALUES	( '30|30|30|30|30|30|30|30' ),
	( '4|4|4|4|4|4|4|4|4|4' ),
	( '60|50|35|35|17' );

SELECT	Data,
	SUM(CAST(Item AS INT)) AS SumItems
FROM	@WeirdSample WS
	CROSS APPLY dbo.DelimitedSplit8K(WS.Data, '|')
WHERE	ItemNumber > @NumbersToStrip
GROUP BY Data;

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