You might want to use % in the like area (% is a wilcard). Also, the table is called "post" and the body-text is stored in a field called "pagetext". So, something more like:
PHP Code:
select * from post
where pagetext like '%funky-character%'
That will find the posts with the funky_character in them. (I think - I am no mysql guru!) Also, if you have a table prefix, you will have to put that in front of "post".