我的查询数据库原始 Laravel 像这样:
public function getTopProduct($price = null) {
$products = DB::select(DB::raw('SELECT *
FROM (
SELECT a.*, b.name AS store_name, b.address
FROM products a
JOIN stores b ON b.id = a.store_id
WHERE a.status = 1
) AS product
GROUP BY store_id')
);
return $products;
}
我想添加条件
如果价格不为空,则会在 where
上添加条件价格
比如price=1000,那么就查询where
像这样:
WHERE a.status = 1 AND a.price < 1000
如果价格 = null,则条件 AND a.price < 1000
未执行
我该怎么做?
更新
我稍微改变了我的代码流程
我尝试这样:
public function getTopProduct($price)
{
if($price == 1)
$price_condition = 'WHERE price > 1000';
else if($price == 2)
$price_condition = 'WHERE price >= 500 AND a.price <= 1000';
else if($price == 3)
$price_condition = 'WHERE price < 500';
else
$price_condition = '';
$products = DB::select('SELECT *
FROM (
SELECT a.*, b.name AS store_name, b.address
FROM products a
JOIN stores b ON b.id = a.store_id
WHERE a.status = 1
) AS product
GROUP BY store_id
'.$price_condition
);
return $products;
}
而且它有效
你觉得怎么样?
我的解决方案是否正确?或者您有更好的解决方案?
最佳答案
public function getTopProduct($price = null) {
if($price==null){
$products = DB::select(DB::raw('SELECT *
FROM (
SELECT a.*, b.name AS store_name, b.address
FROM products a
JOIN stores b ON b.id = a.store_id
WHERE a.status = 1
) AS product
GROUP BY store_id')
);
}else{
$products = DB::select(DB::raw('SELECT *
FROM (
SELECT a.*, b.name AS store_name, b.address
FROM products a
JOIN stores b ON b.id = a.store_id
WHERE a.status = 1 AND a.price='.$price.'
) AS product
GROUP BY store_id')
);
}
return $products;
}
关于mysql - 如何在 db raw laravel 中添加条件?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46558989/