x

Charindex and Substring

Dear all,

 Declare @key varchar(100)
 Set @key = 'Total Price including Commission at This Level: '
 
 Select
 SUBSTRING(calculation,start,finish-start)
 From
 (
 Select 
 calculation,
 start = charindex(@key,calculation,1)+LEN(@key)+1,
 finish = charindex(' ',calculation,charindex(@key,calculation,1)+LEN(@key)+1)
 From pr_cal 
 ) A

Result:
It returns few rows for eg:
-3.6847058823529411764705882353
-7.4565766786786564342346795345
-3.6842684690456865422468005352

and then i got "Invalid length parameter passed to the LEFT or SUBSTRING function" error

Please any one can let me know, How to amend this Query to avoid the above error and i need only value for ex -3.684.Thanks.

Regards, SG

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asked Jun 30, 2011 at 07:07 AM in Default

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DataAnalyst
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SUBSTRING need to have usable values

start_expression
Is an integer or bigint expression that specifies where the returned characters start. If start_expression is less than 1, the returned expression will begin at the first character that is specified in value_expression. In this case, the number of characters that are returned is the largest value of either the sum of start_expression and length_expression or 0. If start_expression is greater than the number of characters in the value expression, a zero-length expression is returned.

length_expression
Is a positive integer or bigint expression that specifies how many characters of the value_expression will be returned. If length_expression is negative, an error is generated and the statement is terminated. If the sum of start_expression and length_expression is greater than the number of characters in value_expression, the whole value expression beginning at start_expression is returned.

If your values "start" and "finish-start" dont comply with these rules then you will get that error

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answered Jun 30, 2011 at 07:29 AM

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Fatherjack ♦♦
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asked: Jun 30, 2011 at 07:07 AM

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Last Updated: Jun 30, 2011 at 07:26 AM

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