如何在 Laravel 5.1 中使用 NOT FIND_IN_SET?
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How to use NOT FIND_IN_SET in Laravel 5.1?
提问by Amrinder Singh
As we use FIND_IN_SET to search in comma separated values in Laravel like:
因为我们使用 FIND_IN_SET 在 Laravel 中搜索逗号分隔的值,例如:
->whereRaw('FIND_IN_SET(2,sent_mail_ids)')
But now I want to get those results which do not exist in comma separated values. To do this we use NOT FIND_IN_SET in MySQL, but how to use this in Laravel?
但现在我想得到那些逗号分隔值中不存在的结果。为此,我们在 MySQL 中使用 NOT FIND_IN_SET,但如何在 Laravel 中使用它?
回答by jedrzej.kurylo
whereRaw()allows you to add any arbitrary SQL code to your query - in order to reverse the constraint simply use the same query you'd use in raw SQL:
whereRaw()允许您向查询中添加任意 SQL 代码 - 为了反转约束,只需使用您在原始SQL 中使用的相同查询:
->whereRaw('NOT FIND_IN_SET(2,sent_mail_ids)')
or another variation of this constraint:
或此约束的另一种变体:
->whereRaw('FIND_IN_SET(2,sent_mail_ids) = 0')