在mysql之间的where子句不起作用

Question

I am trying to select data from a date range using BETWEEN in the where clause,But it does not return the correct result.The date field is in the format 'mm/dd/YYYY' and the type is varchar My query,

select * from time_track where track_date between '01/01/2015' and '01/21/2015'

But the result contain data with year 2014.

Can anyone please help me

Answer 1

You need to convert the date string to a real date

select * from time_track 
where STR_TO_DATE(track_date ,'%d/%m/%Y') between '2015-01-01' and '2015-01-21'

Or even better use the date data type for that column.

Then you don't need to convert the data in your queries and can make use of indexes which makes it run super fast.

Answer 2

我得到了答案。

SELECT * FROM `time_track` where DATE_FORMAT(STR_TO_DATE(track_date, '%c/%d/%Y'), '%Y-%m-%d') between '2015-01-01' and '2015-01-21'

Answer 3

尝试使用此格式，从time_track中选择*，其中track_date> ='2015-01-01 00:00:00'AND track_date <='2015-01-01 00:00:00'

Answer 4

First convert two dates you have selected

$from=strtotime(date("Y-m-d H:i:s", strtotime($yourfromdate)))
$to=strtotime(date("Y-m-d H:i:s", strtotime($yourtodate)))

select * from time_track where track_date>='$from' and track_date<='$to'

Answer 5

the format of your date is incorrect. You must use this format in your query: yyyy-mm-dd.

select * from time_track where track_date between '2015-01-01' and '2015-01-21'

Marco

Answer 6

For mysql between clause to work expectedly, ideal values would be integer, date, time or datetime. Try changing the datatype from varchar to datetime. That would do your comparison job.