今天发现数据库中有一些数据乱了我需要做一个临时表来存储数据,我们根据条件来把指定ID的数据保存到临时表,然后进行数据替换操作,但在使用select into from中发现许多的问题,下面我把整理个过程与大家分享一下.
表如下所示,代码如下:
SELECT * FROM `test_table_draw` WHERE `borough_id`>=10266 and `borough_id` <=12354
户型表:SELECT * FROM `test_table_pic` WHERE `borough_id`>=10266 and `borough_id` <=12354
相册表,创建一个备份表,代码如下:
- CREATE TABLE IF NOT EXISTS `test_table_tp` (
- `id` int(11) NOT NULL AUTO_INCREMENT,
- `pic_url` varchar(200) NOT NULL,
- `pic_thumb` varchar(200) DEFAULT NULL,
- `pic_desc` varchar(200) DEFAULT NULL,
- `borough_id` int(11) NOT NULL,
- `creater` varchar(20) DEFAULT NULL,
- `addtime` int(11) DEFAULT NULL,
- PRIMARY KEY (`id`),
- KEY `borough_id` (`borough_id`)
- ) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=97289 ;
语法,代码如下:Insert into Table2(field1,field2,...) select value1,value2,... from Table1
例子:Insert into test_table_tp select * from test_table_draw where `borough_id`>=10266 and `borough_id`
错误提示,代码如下:
- INSERT INTO test_table_tp
- SELECT *
- FROM test_table_draw
- WHERE `borough_id` >=10266
- AND `borough_id`
MySQL 返回:#1136 - Column count doesn't match value count at row 1
解决,代码如下:
- Insert into(id,pic_url,pic_thumb,pic_desc,borough_id,creater,addtime) test_table_tp select id,pic_url,pic_thumb,pic_desc,borough_id,creater,addtimefrom test_table_draw where `borough_id`>=10266 and `borough_id` <=12354
后来发现上面不对时又找如下代码:
Select * Into new_table_name from old_table_name;
测试仪:Select * Into test_table_tp1 from test_table_draw where `borough_id`>=10266 and `borough_id` <=12354
执行后错误,错误SQL查询,代码如下:
- SELECT *
- INTO test_table_tp
- FROM test_table_draw
- WHERE `borough_id` >=10266
- AND `borough_id`
- LIMIT 0 , 30
MySQL 返回:#1327 - Undeclared variable: test_table_tp
网上找到提示要求目标表Table2不存在,因为在插入时会自动创建表Table2,并将Table1中指定字段数据复制到Table2中,代码如下:
Select * Into test_table_tp1 from test_table_draw where `borough_id`>=10266 and `borough_id` <=12354
gg查一下发现原来 mysql 数据库是不支持 SELECT INTO FROM 这种语句的,但是经过研究是可以通过另外一种变通的方法解决这个问题的,代码如下:
Create table Table2 (Select * from Table1);
这种语句代替,代码如下:SELECT vale1, value2, value3 into Table2 from Table1;
下面看一个本人实际操作中的例子吧,代码如下:
- Create table www.phpfensi.com (Select A.id,B.id as typeId,A.brand,A.quanpin,A.simple from brands as A,cartype as B where A.type=B.name group by A.brand);
这个是关联两个表得出一个查询结果,然后将结果插入到一个新创建的表 www.phpfensi.com 中.
好了现在我再来做,代码如下:
Create table pic_test (Select * from test_table_draw where `borough_id`>=10266 and `borough_id` <=12354)
成功了啊,您运行的 SQL 语句已经成功运行了,查询花费 0.5645 秒.
SQL 查询,代码如下:
- CREATE TABLE pic_test(
- SELECT *
- FROM test_table_draw
- WHERE `borough_id` >=10266
- AND `borough_id` <=12354
- )
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