Databases
StackOverflow2013
Postsdbo
POMySQL Select - Combine COUNT with GROUP_CONCAT
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POMySQL Select - Combine COUNT with GROUP_CONCAT
    primarykey
    data
    text
    <p>I currently have a MySQL SELECT statement that pulls information from two tables to display a "Sent Messages" field for private messaging. </p> <p>I'd like to know how I can do add a COUNT to my query to count the number of "receivers" in one thread.</p> <p>Here's the basic gist of my table structure, (NOTE: the relational tie between the two tables is the 'message-id' in pm-info and the "id" in pm_data):</p> <pre><code>pm_info: id message_id receiver_id is_read read_date pm_data: id date_sent title sender_id thread_id content </code></pre> <p>Here's my SELECT Statement:</p> <pre><code>SELECT pm_info.is_read, group_concat(DISTINCT receiver.usrFirst) as receiver_name, pm_data.date_sent, pm_data.title, pm_data.thread_id, pm_data.id as data_id, MAX(date_sent) AS thread_max_date_sent FROM pm_info INNER JOIN pm_data ON pm_info.message_id = pm_data.id INNER JOIN tblUsers AS receiver ON pm_info.receiver_id = receiver.usrID WHERE pm_data.sender_id = '$usrID' GROUP BY pm_data.thread_id ORDER BY thread_max_date_sent DESC </code></pre> <p>And it ouputs the recipients like this:</p> <pre><code>Message 1 - Recipients: John, David, Steve - thread_id = 1234 Message 2 - Recipients: Bill, David, John, Ed, Steve - thread_id = 1345 </code></pre> <p>Basically, what I'd like to do is have the option to COUNT the recipients, so in the example above, "Message 1" would display three (3) recipients, and "Message 2" would display five (5) recipients.</p> <p>This way, if I have a thread/message that was sent to 30 users, not all thirty names will be printed out.</p> <p>Thanks!</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USDodinas
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COBe aware of group_concat restrictions due to the length of its return value.
      singulars
      1. POMySQL Select - Combine COUNT with GROUP_CONCAT
      1. USTom Schaefer
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload