Wednesday, April 10, 2013

Strip HTML Tags in SQL

At the bottom are a couple links that helped me to strip HTML tags from columns in SQL.

First create the UDF using the following code:


CREATE FUNCTION [dbo].[udf_StripHTML] (@HTMLText VARCHAR(MAX))
RETURNS VARCHAR(MAX) AS
BEGIN
    DECLARE @Start INT
    DECLARE @End INT
    DECLARE @Length INT
    SET @Start = CHARINDEX('<',@HTMLText)
    SET @End = CHARINDEX('>',@HTMLText,CHARINDEX('<',@HTMLText))
    SET @Length = (@End - @Start) + 1
    WHILE @Start > 0 AND @End > 0 AND @Length > 0
    BEGIN
        SET @HTMLText = STUFF(@HTMLText,@Start,@Length,'')
        SET @Start = CHARINDEX('<',@HTMLText)
        SET @End = CHARINDEX('>',@HTMLText,CHARINDEX('<',@HTMLText))
        SET @Length = (@End - @Start) + 1
    END
    RETURN LTRIM(RTRIM(@HTMLText))
END
GO


Then to run the UDF you simply would include it in the query like this:

select USERID, ACCOUNTNO, RECTYPE, ONDATE, ONTIME, REF, dbo.udf_StripHTML(NOTES), LINKRECID, recid, RFC822 from HISTandMAILtrimmed


http://stackoverflow.com/questions/457701/best-way-to-strip-html-tags-from-a-string-in-sql-server

http://ask.sqlservercentral.com/questions/2022/how-to-execute-sql-udf-function.html

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