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Mysql Query to retrieve data from last month range

Posted on 2010-08-19
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Last Modified: 2013-12-13
HI,

I have the attached MySql Query, "post.dateline" is the date field. I want to add a WHERE clause to get only the records 40 days old or newer.

How to say?

Thanks
SELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount

FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)

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Question by:Fernanditos
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10 Comments
 
LVL 14

Expert Comment

by:Kalpan
ID: 33472838
SELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount
FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)
WHERE
post.dateline < NOW() - INTERVAL 40 DAY


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Expert Comment

by:kingjely
ID: 33472858

< I want to add a WHERE clause to get only the records 40 days old or newer.



SELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount
FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)
WHERE post.dateline between (NOW() - INTERVAL 40 DAY) and (NOW() + INTERVAL 40 DAY)
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Author Comment

by:Fernanditos
ID: 33473041
Both solutions are not working:

I forgot to say that "dateline" date-time format looks like:

1268262191 on database (that would be March 27, 2010, 11:37 am)

Any idea?
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Expert Comment

by:Kalpan
ID: 33473129
ELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount
FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)
WHERE
DATE_FORMAT(post.dateline,'%d/%m/%Y') < NOW() - INTERVAL 40 DAY
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Expert Comment

by:kingjely
ID: 33473137


what timestamp is that?

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Author Comment

by:Fernanditos
ID: 33473372
"DATE_FORMAT(post.dateline,'%d/%m/%Y') < NOW() - INTERVAL 40 DAY" returns non rows, even if there are rows from 1 day old.

The "dateline" filed is a vbulletin standard date/time format. in the database is an int(10)
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Expert Comment

by:kingjely
ID: 33473723

Hrrmm..

what about

SELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount
FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)
WHERE
DATE_FORMAT(post.dateline,'%d/%m/%Y') between NOW() and NOW() - INTERVAL 40 DAY
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Author Comment

by:Fernanditos
ID: 33474324
still does not works.
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Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 33474652
so, you want something like this:
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_unix-timestamp
http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_date-add



SELECT thread.dateline AS dateline_1, thread.threadid, thread.title, thread.lastpostid, thread.forumid, post.username, post.userid, post.dateline, thread.views, post.pagetext, thread.postusername, thread.replycount

FROM (thread LEFT JOIN post ON post.postid=thread.lastpostid)

WHERE post.dateline >= UNIX_TIMESTAMP( DATE_SUB(NOW() , INTERVAL 40 DAY) )

  AND post.dateline <= UNIX_TIMESTAMP( DATE_ADD(NOW() , INTERVAL 40 DAY) )

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Expert Comment

by:kingjely
ID: 33481522
When i checked the UNIX_TIMESTAMP for '2010-03-27 11:37'
(like your comment said, 1268262191 on database (that would be March 27, 2010, 11:37 am)

UNIX_TIMESTAMP('2010-03-27 11:37')  returns 1269661020 NOT 1268262191

I wonder why? I don't understand
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