Untitled

SELECT * from table  WHERE colmn_name ` like '%mytext%' "

SET GLOBAL log_bin_trust_function_creators=1;
DROP FUNCTION IF EXISTS fnStripTags;
DELIMITER |
CREATE FUNCTION fnStripTags( Dirty varchar(4000) )
RETURNS varchar(4000)
DETERMINISTIC
BEGIN
  DECLARE iStart, iEnd, iLength int;
    WHILE Locate( '<', Dirty ) > 0 And Locate( '>', Dirty, Locate( '<', Dirty )) > 0 DO
      BEGIN
        SET iStart = Locate( '<', Dirty ), iEnd = Locate( '>', Dirty, Locate('<', Dirty ));
        SET iLength = ( iEnd - iStart) + 1;
        IF iLength > 0 THEN
          BEGIN
            SET Dirty = Insert( Dirty, iStart, iLength, '');
          END;
        END IF;
      END;
    END WHILE;
    RETURN Dirty;
END;
|
DELIMITER ;
SELECT fnStripTags('this <html>is <b>a test</b>, nothing more</html>');

CREATE FUNCTION `strip_tags`($str text) RETURNS text
BEGIN
    DECLARE $start, $end INT DEFAULT 1;
    LOOP
        SET $start = LOCATE("<", $str, $start);
        IF (!$start) THEN RETURN $str; END IF;
        SET $end = LOCATE(">", $str, $start);
        IF (!$end) THEN SET $end = $start; END IF;
        SET $str = INSERT($str, $start, $end - $start + 1, "");
    END LOOP;
END;

mysql> select strip_tags('<span>hel<b>lo <a href="world">wo<>rld</a> <<x>again<.');
+----------------------------------------------------------------------+
| strip_tags('<span>hel<b>lo <a href="world">wo<>rld</a> <<x>again<.') |
+----------------------------------------------------------------------+
| hello world again.                                                   |
+----------------------------------------------------------------------+
1 row in set

SELECT * from table  WHERE colmn_name REGEXP  '>[^<]*mytext';

set Dirty = Replace(Dirty,'&nbsp;',''); #No space between & and nbsp;
set Dirty = Replace(Dirty,'r','');
set Dirty = Replace(Dirty,'n','');

...BEGIN
    DECLARE $start, $end INT DEFAULT 1;
    SET $str = REPLACE($str, "&nbsp;", " ");
    SET $str = REPLACE($str, "&euro;", "€");
    SET $str = REPLACE($str, "&aacute;", "á");
    SET $str = REPLACE($str, "&eacute;", "é");
    SET $str = REPLACE($str, "&iacute;", "í");
    SET $str = REPLACE($str, "&oacute;", "ó");
    SET $str = REPLACE($str, "&uacute;", "ú");
LOOP...

# MySQL function to programmatically replace out specified html tags from text/html fields

# run this to drop/update the stored function
DROP FUNCTION IF EXISTS `strip_tags`;

DELIMITER |

# function to nuke all opening and closing tags of type specified in argument 2
CREATE FUNCTION `strip_tags`($str text, $tag text) RETURNS text
BEGIN
    DECLARE $start, $end INT DEFAULT 1;
    SET $str = COALESCE($str, '');
    LOOP
        SET $start = LOCATE(CONCAT('<', $tag), $str, $start);
        IF (!$start) THEN RETURN $str; END IF;
        SET $end = LOCATE('>', $str, $start);
        IF (!$end) THEN SET $end = $start; END IF;
        SET $str = INSERT($str, $start, $end - $start + 1, '');
        SET $str = REPLACE($str, CONCAT('</', $tag, '>'), '');
    END LOOP;
END;

| DELIMITER ;

# test select to nuke all opening <a> tags
SELECT
    STRIP_TAGS(description, 'a') AS stripped
FROM
    tmpcat;

# run update query to replace out all <a> tags
UPDATE tmpcat
SET
    description = STRIP_TAGS(description, 'a');