2

我对数据库不太熟悉,并且遇到了必须使用join.

products桌子:

╔════════════╦═════════╦═════════════════╗
║ product_id ║   MPN   ║ manufacturer_id ║
╠════════════╬═════════╬═════════════════╣
║         51 ║ GB40337 ║              11 ║
╚════════════╩═════════╩═════════════════╝

manufacturers桌子:

╔═════════════════╦═════════╗
║ manufacturer_id ║  name   ║
╠═════════════════╬═════════╣
║              11 ║ Griffin ║
╚═════════════════╩═════════╝

现在据我了解,需要内部连接才能获得制造商名称?所以我运行了这个查询:

SELECT product.mpn, manufacturer.name
FROM product
INNER JOIN manufacturer
ON product.manufacturer_id=manufacturer.manufacturer_id;

它正确地返回数据,但现在因为我正在使用Medoo我必须使用它的语法,我不太明白: http: //medoo.in/api/select

如何将 medoo 用于相同的查询?

4

2 回答 2

2

尝试这个

$database->select("product", [
            "[><]manufacturer" => ["manufacturer_id" => "manufacturer_id"]], [
            "product.mpn",
            "manufacturer.name"]);
于 2016-10-04T12:00:34.960 回答
2

在 Medoo 中,您可以像这样编写查询。

阅读此https://www.sitepoint.com/getting-started-medoo-examples-use/

$db->select(
    'product', 
    array('[><]manufacturer' => array('product.manufacturer_id' => 'manufacturer.manufacturer_id')),
    array('product.mpn', 'manufacturer.name')
);
于 2016-10-04T12:16:40.340 回答