How to update all post content in WP ?

Hi ,
I have a wordpress video site and I need to change all the width of the posts . Can anyone give the sql code to update the content so that I can change the width from x to y ?

Thanks

 

Do you want to add more content to old post ?
If you are going to add the different contents to different posts , I think there is no shortcut.
You have to update the post one by one.

 

I need to update the posts content.
For example the post had the content : The boy is big.
I need to cancel big and put "weird".

 

That's how you replace the posts content:

UPDATE wp_posts SET post_content = REPLACE (post_content, "big", "weird");

Or the posts titles:

UPDATE wp_posts SET post_title = REPLACE (post_title, "big", "weird");