参考

UPDATE wp_posts SET
post_content = replace(post_content, '搜索引擎优化', '搜索引擎营销');

举例

UPDATE wp_posts SET
post_content = replace(post_content, 'width="700" height="500"', 'width="1060" height="600"
');

UPDATE wp_posts SET
post_content = replace(post_content, 'width="800" height="571"', 'width="1060" height="600"
');

width="700" height="500"
width="800" height="570"
width="1060" height="600"