And do not forget to make changes in wp-config.php $table_prefix = 'new_';
.
Time is the most valuable resource today. My pleasure is to create a tool that can save time. More info about how and why do you need to change WP database prefix read here.
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RENAME TABLE wp_comments TO new_comments; RENAME TABLE wp_commentmeta TO new_commentmeta; RENAME TABLE wp_links TO new_links; RENAME TABLE wp_options TO new_options; RENAME TABLE wp_postmeta TO new_postmeta; RENAME TABLE wp_posts TO new_posts; RENAME TABLE wp_terms TO new_terms; RENAME TABLE wp_termmeta TO new_termmeta; RENAME TABLE wp_term_relationships TO new_term_relationships; RENAME TABLE wp_term_taxonomy TO new_term_taxonomy; RENAME TABLE wp_usermeta TO new_usermeta; RENAME TABLE wp_users TO new_users; UPDATE new_options SET option_name = REPLACE(option_name, 'wp_', 'new_') WHERE option_name LIKE 'wp_%'; UPDATE new_usermeta SET meta_key = REPLACE(meta_key, 'wp_', 'new_') WHERE meta_key LIKE 'wp_%';
And do not forget to make changes in wp-config.php $table_prefix = 'new_';
.