mysql存储中怎么使用while批量插入数据-mysql教程-PHP中文网

mysql存储中怎么使用while批量插入数据

WBOY

发布： 2023-05-27 10:07:45

转载

1460人浏览过

批量提交

while 语句写法：

    while '条件' do
            循环体语句;
    end while;

登录后复制

完整写法

drop procedure if exists test_insert;
delimiter $$
create procedure test_insert(n int)
    begin
    declare v int default 0;
    set AUTOCOMMIT = 0;
    while v < n
        do
                insert into test(second_key, text, field_4,status, create_date)
                values ((v*10),
                concat('t',v),
                substring(md5(rand()), 1, 10),
                'good',
                adddate('1970-01-01', rand(v) * 10000));
        set v = v + 1;
     end while;
      set AUTOCOMMIT = 1;
end$$
delimiter ;

登录后复制

查看、删除存储过程：

mysql> show procedure status like 'test_insert';
mysql> show create procedure test_insert\G;
mysql> drop procedure if exists test_insert;

登录后复制

创建表

CREATE TABLE test (
id INT NOT NULL AUTO_INCREMENT,
second_key INT,
text VARCHAR(20),
field_4 VARCHAR(20),
status VARCHAR(10),
create_date date,
PRIMARY KEY (id),
KEY idx_second_key (second_key)
) Engine=InnoDB CHARSET=utf8;

登录后复制

插入100万条数据

图可丽批量抠图

用AI技术提高数据生产力，让美好事物更容易被发现

查看详情

mysql> call test_insert(1000000);
Query OK, 0 rows affected (31.86 sec)

登录后复制

单个提交

完整写法

drop procedure if exists test_insert;
delimiter $$
create procedure test_insert(n int)
    begin
    declare v int default 0;
    while v < n
        do
                insert into test(second_key, text, field_4,status, create_date)
                values ((v*10),
                concat('t',v),
                substring(md5(rand()), 1, 10),
                'good',
                adddate('1970-01-01', rand(v) * 10000));
        set v = v + 1;
     end while;
end$$
delimiter ;

登录后复制

插入1万条数据

mysql> call test_insert(10000);
Query OK, 1 row affected (1 min 8.52 sec)

登录后复制

打开另一个窗口查看

mysql> select count(*) from test.test;
+----------+
| count(*) |
+----------+
|     1428 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from test.test;
+----------+
| count(*) |
+----------+
|     1598 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from test.test;
+----------+
| count(*) |
+----------+
|     1721 |
+----------+
1 row in set (0.00 sec)
mysql> select count(*) from test.test;
+----------+
| count(*) |
+----------+
|     1983 |
+----------+
1 row in set (0.00 sec)

登录后复制

以上就是mysql存储中怎么使用while批量插入数据的详细内容，更多请关注php中文网其它相关文章！