sql 作者：Matt B，2016-10-17：帮助用户将101个Facebook导入时间表从旧的Facebook Importer插件迁移到

Posted 2021-05-13

DELIMITER $$
DROP PROCEDURE IF EXISTS tribe_update_ea_schedule$$
CREATE PROCEDURE tribe_update_ea_schedule()
BEGIN
	/**
	 *
	 * This procedure updates all on_demand Facebook schedules so they execute weekly. If there are more than 100,
	 * the schedules are spread out over multiple days.
	 *
	 */
	DECLARE int_days INT;
	DECLARE str_frequency VARCHAR(10);
	DECLARE int_batch INT;
	
	/* Batch size of records to update. Set the batch size to a MAXIMUM of 100 records */
	SET int_batch = 100;
	
	/* Current day counter */
	SET int_days = 1;
	
	/* Frequency you'd like to change the On-Demand import frequency to */
	SET str_frequency = 'weekly';
	
	WHILE( int_days < 7 ) DO
		/* First, we are going to update the post_modified_gmt field based on the number of times through the loop we've travelled */
		/* We are leveraging the menu_order field to track the posts we've updated. Don't worry, it'll be set back to 0 */
		UPDATE
			wp_posts
		SET
			post_modified_gmt = DATE( DATE_ADD( CURDATE(), INTERVAL int_days DAY ) ),
			menu_order = 1
		WHERE
			menu_order = 0
			AND post_parent = 0
			AND EXISTS(
				SELECT
					1
				FROM
					wp_postmeta pm2
				WHERE
					pm2.post_id = wp_posts.ID
					AND pm2.meta_key = '_tribe_aggregator_origin'
					AND pm2.meta_value = 'facebook'
				)
			AND EXISTS(
				SELECT
					1
				FROM
					wp_postmeta pm2
				WHERE
					pm2.post_id = wp_posts.ID
					AND pm2.meta_key = '_tribe_aggregator_type'
					AND pm2.meta_value = 'schedule'
				)
			AND EXISTS(
				SELECT
					1
				FROM
					wp_postmeta pm2
				WHERE
					pm2.post_id = wp_posts.ID
					AND pm2.meta_key = '_tribe_aggregator_frequency'
					AND pm2.meta_value = 'on_demand'
				)
		ORDER BY ID
		LIMIT int_batch;
		
		SET int_days = int_days + 1;
		SELECT int_days;
	END WHILE;

	/* Let's update the on_demand frequency to str_frequency for schedules that were manipulated during the loop above */
	REPLACE INTO wp_postmeta (
		meta_id,
		post_id,
		meta_key,
		meta_value
	) SELECT
		meta_id,
		post_id,
		meta_key,
		str_frequency
	FROM
		wp_postmeta pm1
	WHERE
		pm1.meta_key = '_tribe_aggregator_frequency'
		AND pm1.meta_value = 'on_demand'
		AND EXISTS(
			SELECT
				1
			FROM
				wp_posts
			WHERE
				wp_posts.ID = pm1.post_id
				AND menu_order = 1
		)
		AND EXISTS(
			SELECT
				1
			FROM
				wp_postmeta pm2
			WHERE
				pm2.post_id = pm1.post_id
				AND pm2.meta_key = '_tribe_aggregator_origin'
				AND pm2.meta_value = 'facebook'
			)
		AND EXISTS(
			SELECT
				1
			FROM
				wp_postmeta pm2
			WHERE
				pm2.post_id = pm1.post_id
				AND pm2.meta_key = '_tribe_aggregator_type'
				AND pm2.meta_value = 'schedule'
			);

	/* Set the post's menu order back to 0 and update the post_content with the new frequency so it renders nicely in the UI */
	UPDATE
		wp_posts
	SET
		menu_order = 0,
		post_content = str_frequency
	WHERE
		menu_order = 1
		AND post_parent = 0
		AND post_content = 'on_demand'
		AND EXISTS(
			SELECT
				1
			FROM
				wp_postmeta pm2
			WHERE
				pm2.post_id = wp_posts.ID
				AND pm2.meta_key = '_tribe_aggregator_origin'
				AND pm2.meta_value = 'facebook'
			)
		AND EXISTS(
			SELECT
				1
			FROM
				wp_postmeta pm2
			WHERE
				pm2.post_id = wp_posts.ID
				AND pm2.meta_key = '_tribe_aggregator_type'
				AND pm2.meta_value = 'schedule'
			)
		AND EXISTS(
			SELECT
				1
			FROM
				wp_postmeta pm2
			WHERE
				pm2.post_id = wp_posts.ID
				AND pm2.meta_key = '_tribe_aggregator_frequency'
				AND pm2.meta_value = str_frequency
			);
	
END$$
DELIMITER ;

CALL tribe_update_ea_schedule();