Getting those rows from a table where status is still the same some days later?
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I got a MySql table with 3 columns
status, mail and created_at. Now I would like to get those rows where
status = 'somestatus' where the
status is still 'some_status' for example 3 days later. It should be selected by column
So if there is the same
status 'somestatus' for the same
created_at contains data in the form of 2016-08-01 14:13:27
If thats easier to fetch: I need all rows for the same mail where the status was and is still 'somestatus'. As soon as the status was 'somestatus' and later changed to any other than 'somestatus', I do not want that data. Easier?
Checks records for
DATEDIFF between @startDate (set this to whatever), and that + 3 days
SET @startDate = '2019-11-23'; SELECT status, mail, created_at FROM table WHERE status = 'somestatus' AND MAIL = 'some value' AND DATEDIFF(@startDate, (@startDate + INTERVAL 3 DAY)) = -3
After updated question this should do the trick.
Check a sub query in your where. And go through all
Mails that have a different value then
SELECT status, mail, created_at FROM test WHERE mail NOT IN ( SELECT mail FROM `test` where status != 'notpayed' )
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You have to use
DATEDIFF function which returns difference between two dates in days, like this:
SELECT status, mail, created_at FROM tbl WHERE status = 'somestatus' AND DATEDIFF(NOW(), created_at) = 3
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- Do you want to retrieve all rows which did not change their
statusin 3 days? I suggest using a second column
status_changed_atcontaining info on when was the last time status was modified (you would need to update it along with
- I cant add any columns. I just need those rows (by column mail) for which the status is still the same 3 days later (according to created_at).
- are all of these records available already (for example 2016-08-01, 2016-08-02, 2016-08-03, 2016-08-04). Or is this going into the future (so today +3 days)
- The dates are all in the table already, I just need to select them somehow.
- @Arnie You can't really do that without recording last status change date / history of updates.
- Thanks, but here I have to set the startdate manually which I cant, because its dynamic. Is there a way to set it dynamically in order to get the desired results?
- What do you mean with i have to get the startDate dynamically? Earlier you said all dates were in the past so there is no corrolation between now and then
- Yes, the dates are all in the database already, each in a separate row. But I need this to work without setting the start date. Like this: Return all rows where the mail is the same, status is somestatus and created_at is at least 3 days away from the previous created_at for the same mail.
- is mail always 3 records of the same unique "id or along those lines". With a max of 3 records per unique mail?
- @Arnie if you could show what your table looks like with some data in it, it could greatly improve our capability to help you
- Try to explain what you have done in your solution, this will be a lot more helpful to other users rather than a code only answer
- Looks good, but does not work I think, thats becasue of the NOW(). It should always compare created_at with created_at. Something like
DATEDIFF(created_at, created_at) = 3