WordPress query to update the page templates quickly after renaming page template file.

update-wordpress-page-templates.sql

UPDATE
	wp_postmeta
SET
	meta_value = 'page-templates/template-overview.php'
WHERE
	meta_key = '_wp_page_template'
		AND
	meta_value = 'page-templates/template-overzicht.php'
;

UPDATE
	wp_postmeta
SET
	meta_value = 'page-templates/template-trips.php'
WHERE
	meta_key = '_wp_page_template'
		AND
	meta_value = 'page-templates/template-reizen.php'
;