SQL Query Replace Text Issue

[محروم.كوم]

I am having an issue on my forum where i had a problem with an outdated youtube embed plugin which has caused an issue when i updated my forum.

I have about 1200+ posts with youtube links looking like this now :

when they should look like this:


I tried this SQL update code but it hasnt worked for me:

UPDATE post SET pagetext = REPLACE(pagetext, 'p')

Any help that can be assisted would be GREATLY appreciated !

Edit:
I also tried this with no luck:

UPDATE
post
SET
pagetext = replace(pagetext,'p')

WHERE
pagetext LIKE '%'

Edit2: heres an example of an affected post : http://www.djtechtools.com/forum/sho...2&postcount=10 __DEFINE_LIKE_SHARE__