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php - Show other rows in MySQL table where a rows have a string with comma matched with a id

mangohost Get the solution ↓↓↓

I have a table called leads, and the other table is users. Now when the lead is consumed by the user, the field 'consumed_user_id' in leads adds the user_ids with comma delimiter in this field like (21,22,23,24). and other field is hide_seller_id, which adds the user id who want to hide the leads like this.

_______________________________________
| consumed_user_id  | hide_seller_id |
| 21,22,23,24       | NULL           |
|  NULL             | 21,22,23       |
_______________________________________

Now both cant be filled, because row1 is consumed one by the user, its already hide, and row2 is hide by users but not consumed. so if user 21, want to see list, row1 and row2, both is not shown in his lead list.

Now I want to show only those leads which are not consumed by the users and which has id in hide_seller_id row. I try this

SELECT * FROM leads 
WHERE status = 'verified' 
AND NOT FIND_IN_SET('$user_id',consumed_seller_id) OR consumed_seller_id 
IS NULL 
AND NOT FIND_IN_SET('$user_id',hide_seller_id) OR hide_seller_id IS NULL 
ORDER BY id DESC

This is working for hide_seller_id but not working for consumed_seller_id, please help.

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PHP

PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites. The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
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MySQL

DBMS is a database management system. It is designed to change, search, add and delete information in the database. There are many DBMSs designed for similar purposes with different features. One of the most popular is MySQL. It is a software tool designed to work with relational SQL databases. It is easy to learn even for site owners who are not professional programmers or administrators. MySQL DBMS also allows you to export and import data, which is convenient when moving large amounts of information.
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