php - How to create a MySQL query that returns the replies to a given user's commentsGet the solution ↓↓↓
I am trying to create a page that displays all replies to first tier comments of the active user. Here is an example DB table similar to the one I have...
If you just want to retrieve the first level replies (ignoring those from the initial user), you can
JOIN comments to itself to find the replies, filtering out those with the same
SELECT rep.* FROM comments rep JOIN comments cmt WHERE rep.commid = cmt.commentid AND cmt.userid = 1 AND rep.userid != 1
Output (for your sample data):
commentid postid commid username userid commtext 53 100 52 user2 2 second
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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.
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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