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Asked: 2026-05-11T03:51:12+00:00

Ok, I have two tables that I am joining and doing a select on

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Ok, I have two tables that I am joining and doing a select on to get three fields back (timestamp, message, and articleNum). Now, this data is basically a log of when an article was created and modified, I have to write the logic to process those three fields I got back. In order to figure out when an article was created and/or modified last, I need to look at the message and look for the keywords (‘added’ for created and ‘updated’ for modified). I have the results of the query back in an assoc array and I would eventually like to have the end result be in an assoc array with the articleNum being the key and a two value array (created, modified) being the key. Sometimes though, there won’t always be a modified value, but there will always be a created. Any idea on how I would even start a problem like this?

EDIT From what I can tell, it looks like the date is stored as a bigint in Unix seconds. Clarification: the created and modified values are not fields from the table, I need to figure it out from the message field. There will always be one added time but sometimes there could be 0 or more updated messages and I would need to figure out the latest.

EDIT 2 Ok, sorry about the wording of the question. After looking at the problem a little longer I realized I could do this all in two SQL statements. For finding the added date I used:

'SELECT MIN(action_logs.time_added), article.number  FROM action_logs  JOIN proposal ON action_logs.article_num = article.number  WHERE action_logs.message LIKE '%added%'  GROUP BY article.number'

Could probably do the same thing for last modified, except with a MAX. Thanks for the suggestions though.

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1 Answer

  1. I’m making some assumptions here:

    If you’re table stores a row for each of your messages (added/updated), then this query would return one row per article, with the columns you need (articleNum, Created, Updated):

    SELECT    A.articleNum,    MCreated.Timestamp AS Created,    MUpdated.Timestamp Updated FROM Articles A JOIN Messages MCreated    ON MCreated.articleNum = A.articleNum   AND MCreated.Message = 'added' LEFT JOIN Messages MUpdated   ON MUpdated.articleNum = A.articleNum   AND MUpdated.Message = 'updated'
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