sql question

alright, ima n00b I'm trying to fugure out how to make an edit button for a hand made forum where the creator is LONG gone.
But my basic problem is that the posts are stored in an SQL table, and in the table the individual posts are identified by a postID, with the text content stored in the BODY.
So I need to figure out how to replace the BODY in that line of the table.
I've looked at a few documentations of the replace command, and come out confused... any help?

UPDATE theFuckingTable SET BODY = "sage" WHERE postID = 7777777777

addly enough, that was helpful, thank you

You're welcome. Read SICP.

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