SQL ORDER BY date problem

Question

Can you please help me in solving this problem. I am trying to order the results of an SQL query by date, but I\'m not getting the results I need.

The query I\'m usi

Answer 1

This may help you in mysql, php.

//your date in any format
$date = $this->input->post('txtCouponExpiry');

$day = (int)substr($date, 3, 2);
$month = (int)substr($date, 0, 2);
$year = (int)substr($date, 7, 4);

$unixTimestamp = mktime(0, 0, 0, $year, $day, $month);

// insert it into database
'date'->$unixTimestamp;

//query for selecting  order by date ASC or DESC
select * from table order_by date asc;

Answer 2

Try using this this work for me

select *  from `table_name` ORDER BY STR_TO_DATE(start_date,"%d-%m-%Y") ASC

where start_date is the field name

Answer 3

It sounds to me like your column isn't a date column but a text column (varchar/nvarchar etc). You should store it in the database as a date, not a string.

If you have to store it as a string for some reason, store it in a sortable format e.g. yyyy/MM/dd.

As najmeddine shows, you could convert the column on every access, but I would try very hard not to do that. It will make the database do a lot more work - it won't be able to keep appropriate indexes etc. Whenever possible, store the data in a type appropriate to the data itself.

Answer 4

I wanted to edit several events in descendant chonologic order, and I just made a :

select 
TO_CHAR(startdate,'YYYYMMDD') dateorder,
TO_CHAR(startdate,'DD/MM/YYYY') startdate,
...
from ...
...
order by dateorder desc

and it works for me. But surely not adapted for every case... Just hope it'll help someone !

Answer 5

Unsure what dbms you're using however I'd do it this way in Microsoft SQL:

select      [date]
from        tbemp 
order by    cast([date] as datetime) asc

Answer 6

It seems that your date column is not of type datetime but varchar. You have to convert it to datetime when sorting:

select date
from tbemp
order by convert(datetime, date, 103) ASC

style 103 = dd/MM/yyyy (msdn)