MySQL在单个表中获取多行

Question

Here is the stucture of the DB table that was handed to me. No Id, just name and value.

|option_name  | option_value|
 | Item1      | Value |
 | Item2      | Value |
 | Item3      | Value |
 | 2ndItem1   | Value |
 | 2ndItem2   | Value |
 | 2ndItem3   | Value |
 | ThirdItem1 | Value |
 | ThirdItem1 | Value |
 | ThirdItem1 | Value |

The statement I would like to have would put the data to something like one of these:

| item1.value | 2ndItem1.value | ThirdItem1.value|
| item2.value, 2ndItem2, ThirdItem2|

There is only a handful of names that I need to match together (about 7-8) so it's not a big deal to match them together by hand if that's what it takes

Not sure if a JOIN is the right tool for the job, or a loop or.. well I'll let you give me the advice.

I am going to be using this in a Drupal Migration, which is why I'd like to create this as a MYSQL query.

Answer 1

In terms of the SQL side of things it sounds like you should be able to do something like:

SELECT `option_value` FROM table_name WHERE `option_name` in ('item1', 'item2', 'item3', 'item4');

In PHP it should work out to basically be:

<?php
$items = array('item1', 'item2', 'item3', 'item4');
$itemsStr = implode(',', $users); // returns 'item1','item2','item3','item4'
$sql = "SELECT `option_value` FROM table_name where `option_name` in ({$itemsStr})";

This is very rough but hopefully will get you going in the right direction. I'm sure my use of backticks is in the wrong spots