mysql存储过程的创建及带参数调用

mysql存储过程是经过编译后mysql语句保存在数据库中MySQL 创建数据库，主要处理一些记录大、重复性强的复杂查询。

mysql存储过程通过关键词DELIMITER、PROCEDURE、BEGIN、END及$$关申请开始和结束。

一、简单的存储过程的创建及调用

DELIMITER $$

CREATE PROCEDURE posts_se()

BEGIN

SELECT *

FROM wp_posts, wp_term_relationships, wp_term_taxonomy

WHERE wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id

AND term_id= 1

AND ID = object_id

AND ID > 1000

AND post_status = 'publish'

AND post_type = 'post'

ORDER BY post_date

DESC LIMIT 0,6

END $$

调用

call posts_tag();

二、带参数的存储过程的创建及调用

DELIMITER $$

CREATE PROCEDURE posts_tag(IN IDs int,OUT post_authors VARCHAR(50))

BEGIN

SELECT *

FROM wp_posts, wp_term_relationships, wp_term_taxonomy

WHERE wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id

AND ID = object_id

AND taxonomy = 'post_tag'

AND post_status = 'publish'

AND post_type = 'post'

AND ID = IDs

post_author = 'post_authors'

ORDER BY post_date

END $$

调用：查询id为36，作者id为45 的记录

call posts_tag(36,'45');

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