在mysqli中插入时,是否可以使用子查询,同时使用值中的数据?
insert into articles(description) values( Information );
insert into blogs(blog, article_id) values( example.com/ , SELECT LAST_INSERT_ID());
在mysqli中插入时,是否可以使用子查询,同时使用值中的数据?
insert into articles(description) values( Information );
insert into blogs(blog, article_id) values( example.com/ , SELECT LAST_INSERT_ID());
是的,你可以。只需将子查询括在括号中即可。示例:
CREATE TABLE articles (id int not null primary key, description varchar(50));
Query OK, 0 rows affected (0.06 sec)
CREATE TABLE blogs (id int not null primary key, blog varchar(50), article_id int);
Query OK, 0 rows affected (0.06 sec)
INSERT INTO articles (description) VALUES ( Information );
Query OK, 1 row affected, 1 warning (0.04 sec)
INSERT INTO blogs (blog, article_id) VALUES ( example.com/ , (SELECT LAST_INSERT_ID()));
Query OK, 1 row affected, 1 warning (0.04 sec)
但作为@Pekka在上面的评论中建议,在这种情况下,你甚至不需要子查询。这会起作用:
INSERT INTO blogs (blog, article_id) VALUES ( example.com/ , LAST_INSERT_ID());
您可能想使用<code>插入。。。请选择。
http://dev.mysql.com/doc/refman/5.1/en/insert-select.html
所以它会像
插入博客(…)选择example.com/,last_insert_id()
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