如何在Laravel中执行此操作，子查询不在

Question

我需要在Laravel格式中转换此查询，我尝试使用'WhereNotIn'，但我没有得到我想要的结果。有人可以帮帮我吗？

SELECT
em.erp_mlbid AS category_id

FROM
erp_product AS ep
INNER JOIN
erp_product_description AS epd ON epd.erp_productid = ep.erp_productid
INNER JOIN
erp_product_category AS epc ON epc.erp_productid = ep.erp_productid
INNER JOIN
erp_mlbcategory_erpcategory AS emc ON emc.erp_categoryid = epc.erp_categoryid
INNER JOIN
erp_mlb_category AS em ON em.erp_mcid = emc.erp_mlbcategoryid
INNER JOIN
erp_product_image AS epi ON epi.erp_productid = ep.erp_productid
WHERE
ep.erp_productid NOT IN (
SELECT
epm.erp_productid
FROM
erp_product_to_mlb AS epm
)
AND ep.erp_quantity > 0
AND ep.erp_status > 0
LIMIT
                    1

显然我的行'WhereNotIn'被忽略，结果是相同的：

 $categoria = DB::table('erp_product')
                            ->join('erp_product_category','erp_product_category.erp_productid', '=', 'erp_product.erp_productid')
                            ->join('erp_mlbcategory_erpcategory', 'erp_mlbcategory_erpcategory.erp_categoryid', '=','erp_product_category.erp_categoryid')
                            ->join('erp_mlb_category', 'erp_mlb_category.erp_mcid', '=', 'erp_mlbcategory_erpcategory.erp_mlbcategoryid')
                            ->select('erp_mlb_category.erp_mlbid')
                            ->whereNotIn('erp_product.erp_productid', function($q){
                                $q->select('erp_productid')->from('erp_product_to_mlb');
                            })
                            ->get();

Answer 1

你有一个错字：

->whereNotIn('erp_product.erp_producid'

应该是：

->whereNotIn('erp_product.erp_productid'

注意拼写错误的productid。

您可以执行的一项调试是删除->get()调用以使$categoria成为查询对象，然后执行此操作以便查看已汇编的查询：

dd($categoria->toSql());