cách replace string text content trên toàn bộ database

UPDATE tablename SET tablefield = replace(tablefield,”findstring”,”replacestring”);




UPDATE wp_posts SET post_content = replace(post_content,"tiêm","replace");        
UPDATE wp_posts SET post_content = replace(post_content,"truyền","replace");
UPDATE wp_posts SET post_content = replace(post_content,"chích","replace");