如何在Laravel中进行此查询:
SELECT
`p`.`id`,
`p`.`name`,
`p`.`img`,
`p`.`safe_name`,
`p`.`sku`,
`p`.`productstatusid`
FROM `products` p
WHERE `p`.`id` IN (
SELECT
`product_id`
FROM `product_category`
WHERE `category_id` IN ('223', '15')
)
AND `p`.`active`=1
我也可以通过连接来做到这一点,但我需要这种格式来提高性能。
答案 0 :(得分:153)
考虑以下代码:
Products::whereIn('id', function($query){
$query->select('paper_type_id')
->from(with(new ProductCategory)->getTable())
->whereIn('category_id', ['223', '15'])
->where('active', 1);
})->get();
答案 1 :(得分:44)
查看Fluent的高级文件:http://laravel.com/docs/queries#advanced-wheres
以下是您尝试实现的目标示例:
DB::table('users')
->whereIn('id', function($query)
{
$query->select(DB::raw(1))
->from('orders')
->whereRaw('orders.user_id = users.id');
})
->get();
这将产生:
select * from users where id in (
select 1 from orders where orders.user_id = users.id
)
答案 2 :(得分:18)
您可以使用关键字“use($ category_id)”
来使用变量$category_id = array('223','15');
Products::whereIn('id', function($query) use ($category_id){
$query->select('paper_type_id')
->from(with(new ProductCategory)->getTable())
->whereIn('category_id', $category_id )
->where('active', 1);
})->get();
答案 3 :(得分:4)
以下代码对我有用:
$result=DB::table('tablename')
->whereIn('columnName',function ($query) {
$query->select('columnName2')->from('tableName2')
->Where('columnCondition','=','valueRequired');
})
->get();
答案 4 :(得分:2)
该脚本在Laravel 5.x和6.x中进行了测试。在某些情况下,[
{
id: 45193,
amount: "8.79",
date: 1579858773120,
type: 11
},
{
id: 45192,
amount: "10.00",
date: 1579858763947,
type: 1
},
{
id: 45191,
amount: "2000.00",
date: 1579858759085,
type: 131
}
]
闭包可以提高性能。
static
生成SQL
Product::select(['id', 'name', 'img', 'safe_name', 'sku', 'productstatusid'])
->whereIn('id', static function ($query) {
$query->select(['product_id'])
->from((new ProductCategory)->getTable())
->whereIn('category_id', [15, 223]);
})
->where('active', 1)
->get();
答案 5 :(得分:0)
Laravel 4.2及更高版本,可以使用try relationship查询: -
Products::whereHas('product_category', function($query) {
$query->whereIn('category_id', ['223', '15']);
});
public function product_category() {
return $this->hasMany('product_category', 'product_id');
}
答案 6 :(得分:0)
Product::from('products as p')
->join('product_category as pc','p.id','=','pc.product_id')
->select('p.*')
->where('p.active',1)
->whereIn('pc.category_id', ['223', '15'])
->get();
答案 7 :(得分:0)
您可以在不同的查询中使用Eloquent,并使事情更易于理解和维护:
$productCategory = ProductCategory::whereIn('category_id', ['223', '15'])
->select('product_id'); //don't need ->get() or ->first()
然后我们将它们放在一起:
Products::whereIn('id', $productCategory)
->where('active', 1)
->select('id', 'name', 'img', 'safe_name', 'sku', 'productstatusid')
->get();//runs all queries at once
这将生成与您在问题中编写的查询相同的查询。
答案 8 :(得分:0)
使用变量
$array_IN=Dev_Table::where('id',1)->select('tabl2_id')->get();
$sel_table2=Dev_Table2::WhereIn('id',$array_IN)->get();
答案 9 :(得分:0)
以下是我从多个答案中收集的 Laravel 8.x 方法:
Product::select(['id', 'name', 'img', 'safe_name', 'sku', 'productstatusid'])
->whereIn('id', ProductCategory::select(['product_id'])
->whereIn('category_id', ['223', '15'])
)
->where('active', 1)
->get();
答案 10 :(得分:-1)
请尝试使用此在线工具sql2builder
DB::table('products')
->whereIn('products.id',function($query) {
DB::table('product_category')
->whereIn('category_id',['223','15'])
->select('product_id');
})
->where('products.active',1)
->select('products.id','products.name','products.img','products.safe_name','products.sku','products.productstatusid')
->get();