I found a way to do this using regular expressions. Found this on another website
CREATE OR REPLACE FUNCTION strip_tags(TEXT) RETURNS TEXT AS $$
2 SELECT regexp_replace(regexp_replace($1, E'(?x)<[^>]*?(\s alt \s* = \s* ([\'"]) ([^>]*?) \2) [^>]*? >', E'\3'), E'(?x)(< [^>]*? >)', '', 'g')
3$$ LANGUAGE SQL;
From: pgsql-sql-owner@postgresql.org [mailto:pgsql-sql-owner@postgresql.org] On Behalf Of Ozer, Pam
Sent: Wednesday, February 23, 2011 3:41 PM
To: pgsql-sql@postgresql.org
Subject: [SQL] Function To Strip HTML
I have the following function that I used in MSSQL. I would like to create the same function in PostgreSql. I think I am a bit confused on how to create and set variables in PostgreSql. Can someone give me a place to start to create something like this?
Thanks
Pam
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
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
