tsql Substring question

[sysindex]

I am trying to find a way to dynamically retrieve the substring
starting point of an nText field.

My query looks something like

SELECT ID,Substring(DO CTEXT,0,200) from mytable where DOCTEXT like
'claim%'"

This query has substring starting point set to 0. Is there a way to
determine the starting point based on the first occurrence of the
search term? If first occurrence of 'claim' is at 25th character then
the query should start substring at 25th and end at 225th character. I
am trying to avoid usage of UDF. Is there a way to handle this through
plain a SQL statement? Any help would be appreciated. TIA.

[Hugo Kornelis]

On 11 Jan 2005 14:43:36 -0800, sy******@gmail. com wrote:

I am trying to find a way to dynamically retrieve the substring
starting point of an nText field.

My query looks something like

SELECT ID,Substring(DO CTEXT,0,200) from mytable where DOCTEXT like
'claim%'"

This query has substring starting point set to 0. Is there a way to
determine the starting point based on the first occurrence of the
search term? If first occurrence of 'claim' is at 25th character then
the query should start substring at 25th and end at 225th character. I
am trying to avoid usage of UDF. Is there a way to handle this through
plain a SQL statement? Any help would be appreciated. TIA.

Hi sysindex,

First, you should know that the numbering for SUBSTRING starts at 1 in SQL
Server, not at 0.

Second, with your WHERE clause, the search string will always start on
position 1. I assume you meant to write WHERE DocText LIKE '%claim%' (note
the extra %).

SELECT ID, SUBSTRING (DocText, CHARINDEX('clai m', DocText), 200)
FROM MyTable
WHERE DocText LIKE '%claim%'
(untested)

Best, Hugo
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