English 中文(简体)
1. 修复已提交和更新的地板
原标题:iterate mysql fileds and update fields
  • 时间:2009-11-24 11:55:27
  •  标签:
  • mysql

我在表格中的数据包含一些空间,因此,我利用这一指挥把它搁置一边。

update results set Field1 = trim(Field1);

我正在对所有领域进行人工操作。

谁能给我一个共同的q子,以自动地把在一张桌上提出的申请总数小三倍?

感谢

最佳回答

这是不可能的。 页: 1 但你可以节省一些时间。

update results
   set field1 = trim(field1)
     , field2 = trim(field2)

或者,请问一下信息表,以找到VARCHAR的所有栏目,并使用PHP或Perl等另一种语言进行查询。

问题回答

你可以在一份声明中自动这样做,但你可以做的是:

SHOW COLUMNS FROM myTable WHERE `Type` LIKE  %char% ;

这将向您提供一份清单,列出所有萨赫勒和撒哈拉以南地区。 通过这些成果,拟定一份结构说明:

$temp = array();
while ($row = mysql_fetch_assoc($result)) {
    $temp[] = sprintf( `%1$s` = TRIM(`%1$s`) , $row[ Field ]);
}
$sql = "UPDATE myTable SET " . implode(", ", $temp);
mysql_query($sql);




相关问题
SQL SubQuery getting particular column

I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...

please can anyone check this while loop and if condition

<?php $con=mysql_connect("localhost","mts","mts"); if(!con) { die( unable to connect . mysql_error()); } mysql_select_db("mts",$con); /* date_default_timezone_set ("Asia/Calcutta"); $date = ...

php return a specific row from query

Is it possible in php to return a specific row of data from a mysql query? None of the fetch statements that I ve found return a 2 dimensional array to access specific rows. I want to be able to ...

Character Encodings in PHP and MySQL

Our website was developed with a meta tag set to... <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> This works fine for M-dashes and special quotes, etc. However, I ...

Pagination Strategies for Complex (slow) Datasets

What are some of the strategies being used for pagination of data sets that involve complex queries? count(*) takes ~1.5 sec so we don t want to hit the DB for every page view. Currently there are ~...

Averaging a total in mySQL

My table looks like person_id | car_id | miles ------------------------------ 1 | 1 | 100 1 | 2 | 200 2 | 3 | 1000 2 | 4 | 500 I need to ...

热门标签