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Editorial Team
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Asked: 2026-05-21T08:46:26+00:00

I have following two tables Table name: thread pk-> thread_id | thread_title | description

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I have following two tables

  1. Table name: thread

    pk-> thread_id | thread_title | description | posted_time | Subject

  2. Table name: reply

    pk-> reply_id | thread_id | reply

thread_id is fk

I want to count no of replies on each thread, I want output like

thread_id | thread_title | description | posted_time | Subject | No_of_replies
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1 Answer

  1. Editorial Team

    Here’s the query I’ve quickly come up with off of the top of my head:

    SELECT
    T.Thread_ID
    ,T.Thread_Title
    ,T.Description
    ,T.Posted_Time
    ,T.Subject
    ,COUNT(R.Reply_ID) AS No_of_replies
FROM
    Thread T
    INNER JOIN Reply R ON T.Thread_ID = R.Thread_ID
GROUP BY
    T.Thread_ID
    ,T.Thread_Title
    ,T.Description
    ,T.Posted_Time
    ,T.Subject

    This should do what you want.

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