Systems Management

We have multiple queues that use custom rules to send out email notifications for various reasons. The code is very similar in all queues and up until the last update work with no problems. Now, the code is giving an error in one queue only. The line is exactly the same in all queues so I cannot figure out why this one would generate an error.

05/16/2019 09:30:02> Starting: 05/16/2019 09:30:02 05/16/2019 09:30:02> Executing Select Query... 05/16/2019 09:30:02> mysqli error: [1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FROM HD_TICKET /* latest change ***/ JOIN HD_TICKET_CHANGE C ON C.HD_TICKET' at line 37]

Here is the code that is used in this particular queue. The section that is triggering the error message does not trigger an error in other queues and does not involve custom fields. Those are standard fields for all queues. Why would it cause a problem in only one queue?

  SELECT

      -- ticket fields

      HD_TICKET.ID, -- $id

      HD_TICKET.ID AS TICKNUM, -- $ticknum

      HD_TICKET.TITLE, -- $title

      DATE_FORMAT(HD_TICKET.CREATED,'%b %d %Y %I:%i:%s %p') AS CREATED, -- $created

      DATE_FORMAT(HD_TICKET.MODIFIED,'%b %d %Y %I:%i:%s %p') AS MODIFIED, -- $modified

      -- change fields

      C.COMMENT, -- $comment

      C.DESCRIPTION, -- $description

      GROUP_CONCAT(CONCAT('----- Change by ', UPDATER.EMAIL,' at ',H.TIMESTAMP,' -----\n',

       H.DESCRIPTION,'\n',H.COMMENT,'\n\nPlease see your ticket at URL,'\n')

       ORDER BY H.ID DESC SEPARATOR '\n') HISTORY, -- $history

      -- about the updater

      UPDATER.USER_NAME AS UPDATER_UNAME, -- $updater_uname

      UPDATER.FULL_NAME AS UPDATER_FNAME, -- $updater_fname

      UPDATER.EMAIL AS UPDATER_EMAIL,     -- $updater_email

      IF(UPDATER.FULL_NAME='',UPDATER.USER_NAME,UPDATER.FULL_NAME) AS UPDATER_CONDITIONAL, -- $updater_conditional

      -- about the owner

      OWNER.USER_NAME AS OWNER_UNAME, -- $owner_uname

      OWNER.FULL_NAME AS OWNER_FNAME, -- $owner_fname

      OWNER.EMAIL AS OWNER_EMAIL,     -- $owner_email

      IFNULL(OWNER.USER_NAME,'Unassigned') OWNER_USER, -- $owner_user

      -- about the submitter

      SUBMITTER.USER_NAME AS SUBMITTER_UNAME, -- $submitter_uname

      SUBMITTER.FULL_NAME AS SUBMITTER_FNAME, -- $submitter_fname

      SUBMITTER.EMAIL AS SUBMITTER_EMAIL,     -- $submitter_email

      -- about priority

      P.NAME AS PRIORITY, -- $priority

      -- about status

      S.NAME AS STATUS,   -- $status

      -- about impact

      I.NAME AS IMPACT,   -- $impact

      -- about category

      CAT.NAME AS CATEGORY, -- $category

      -- other fields

    FROM HD_TICKET

     /* latest change ***/ JOIN HD_TICKET_CHANGE C ON C.HD_TICKET_ID = HD_TICKET.ID

                            AND C.ID=<CHANGE_ID>

     /* complete history*/ JOIN HD_TICKET_CHANGE H ON H.HD_TICKET_ID = HD_TICKET.ID

     /* priority ********/ JOIN HD_PRIORITY P ON P.ID=HD_PRIORITY_ID

     /* status **********/ JOIN HD_STATUS S ON S.ID=HD_STATUS_ID

     /* impact-severity */ JOIN HD_IMPACT I ON I.ID=HD_IMPACT_ID

     /* category ********/ JOIN HD_CATEGORY CAT ON CAT.ID=HD_CATEGORY_ID

     /* owner ***********/ LEFT JOIN USER OWNER ON OWNER.ID = HD_TICKET.OWNER_ID

     /* submitter *******/ LEFT JOIN USER SUBMITTER ON SUBMITTER.ID = HD_TICKET.SUBMITTER_ID

     /* updater *********/ LEFT JOIN USER UPDATER ON UPDATER.ID = C.USER_ID

    WHERE

     C.DESCRIPTION LIKE '%CREATED%'

      /* this is necessary when using group by functions */

    GROUP BY HD_TICKET.ID

    HAVING 1=1