mysql字符串中的多个子字符串

Question

This is my db.

the fulltext field contains html tags and some resources and I want to get all 'src' attributes from that. some records maybe have several 'src'.

now, I dont know how I can write a query to obtain the desired result. and this is my code

DROP FUNCTION IF EXISTS SPLIT_STR;
CREATE FUNCTION SPLIT_STR(
     x text,
     delim VARCHAR(10),
     co INT
)
RETURNS VARCHAR(255) DETERMINISTIC
BEGIN
    WHILE co >= 0 DO
         SET x = RIGHT(x, ( (CHAR_LENGTH(x)) - (InStr(x,'src'))  + 1 ));
         RETURN SUBSTR(x, 1, 40);
    END WHILE;
END

#---------------------------------------------------
SELECT id, SPLIT_STR(test.fulltext, 'src',ROUND (   
    (
        LENGTH(test.fulltext)
        - LENGTH( REPLACE ( test.fulltext, "src", "") ) 
    ) / LENGTH("src")        
))
FROM test
WHERE test.fulltext LIKE '%src%'

and the result should be like this result

Answer 1

Function ExtractValue works with xml in mysql. So, you can use this:

SELECT ExtractValue(test.fulltext, '//img/@src')
FROM test
WHERE test.fulltext LIKE '%src%'