I want to query data in mysql. The problem is the column is datetime(dpost) and i will use a date in the where clause.
SELECT * FROM `uid1000_qposts` WHERE `dpost`="2011-12-06"
this query doesn't return any results. Is there any possible way I can query data using date against a datetime column?
thanks
SELECT * FROM `uid1000_qposts` WHERE date(`dpost`) = '2011-12-06'
Try this:
SELECT * FROM `uid1000_qposts` WHERE DATE_FORMAT(dpost,'%Y-%m-%d')='2011-12-06'
WHERE dpost between "2011-12-06 00:00:00" and "2011-12-06 23:59:59"
Another possibilities is using
DATE_FORMAT(dpost,'%Y-%m-%d')="2011-12-06"
but is not recommended,
as it won't make use on any index (even there is)
SELECT * FROM `uid1000_qposts` WHERE date(`dpost`) = '2011-12-06'
Related
I'm looking to convert a date from 'd/m/Y' to 'Y/m/d' inside where clause like this:
SELECT * FROM myTable WHERE DATE_FORMAT(myDate,'%Y/%m/%d') = '2020/08/01'
this query always returns an empty result
There is a way to do it right ?
Thank you.
Simply convert you data to a date and then format it
SELECT * FROM myTable WHERE DATE_FORMAT(STR_TO_DATE(myDate,'%d/%m/%Y'),'%Y/%m/%d') = '2020/08/01'
Or make them both to dates, and then you can use Date fucntions
SELECT * FROM myTable WHERE STR_TO_DATE(myDate,'%d/%m/%Y') = STR_TO_DATE('2020/08/01','%Y/%m/%d')
The best is to save date as Date/Datetime/timestamp, so that you can with out problem, calculate with them and you always can convert them into any output
I am somewhat new to mysql and I am having an issue on how I should best write the following query. Say I have a table that has a datetime column as well as a few others I want to search on. Since this is just one table, I don't think a join statement would be appropriate here (but I may be wrong since I have not done much in the way of join statements) and I think a subquery is what I need here. So my initial query is to search the table based on a search string the user entered and then I want to limit that on a datetime (start date and end date) also specified by the user in an HTML form.
Table Schema
id, datetime, host, level, message
I want to select any rows that contain $searchstring first so something like ...
SELECT * FROM $table WHERE (level LIKE '%$searchstring%') OR (message LIKE '%$searchstring%') LIMIT $offset,$limit
If I want to limit the above results also by the datetime column, the query would look something like this ...
SELECT * FROM $table WHERE (datetime >='$startdate') AND (datetime < '$enddate')
How can I best merge these queries into one so I can first get any rows that match the search query and then further limit the rows by the start and end datetime?
TIA
You can achieve that by using a single where condition.
In your case:
SELECT * FROM $table WHERE ((level LIKE '%$searchstring%') OR (message LIKE '%$searchstring%')) AND (datetime >='$startdate') AND (datetime < '$enddate') LIMIT $offset,$limit
You don't have to use a JOIN but only add a condition
SELECT *
FROM $table
WHERE (level LIKE '%$searchstring%' OR message LIKE '%$searchstring%')
AND
datetime >='$startdate'
AND datetime < '$enddate'
LIMIT $offset,$limit
I have stored datetime as varchar unfortunetly i have lot of data comes in , now i want to get records between two dates below is my query but it is not returning the correct result set
$start_date=$_POST['start_date'];
$to_date =$_POST['end_date'];
$wbs =$_POST['wbs'];
if(!empty($_POST['wbs']))
{
$query="SELECT * FROM plan_voucher WHERE location=".$_SESSION['role']." and created_at between '".$start_date."' and '".$to_date."'";
use date conversion that already said #Tim in his comments and try your query like below way
SELECT * FROM plan_voucher WHERE location=".$_SESSION['role']."
and STR_TO_DATE(created_at,'%m/%d/%Y') between '".$start_date."'
and '".$to_date."'";
Can I add time with date in mysql ?
( e.g. date=2017-04-05 00:00:39 and time=00:10:00
result should be 2017-04-05 00:10:39 )
I have tried
SELECT dateadd(start_time,max_bidding_time) from product;
Yes, you can use ADD_TIME() function:
SELECT ADDTIME('2017-04-05 00:00:39', '00:10:00');
yes. you can change the structure of your table date field. Select type like "datetime" in database.
SELECT
ADDTIME(start_time, DATE_FORMAT(time,'%H:%i:%s')) AS updatetime
FROM product;
I have a date column in my table.
Is there any way in mysql to retrieve record based on date excluding the time part?
I have tried appending * but does not seems to work.
SELECT * FROM myTable where filterDate="2010-08-01 *"
Is there any way to do it like this rather then filtering it by using between?
Thanks.
SELECT * FROM myTable where filterDate LIKE "%2010-08-01 %"
You can use DATE_FORMAT function of mysql
SELECT * FROM myTable where DATE_FORMAT(filterDate,'%Y-%m-%d') ="2010-08-01"
Try this
SELECT DATE_FORMAT(filterDate , '%d-%m-%Y') AS new_date FROM table_name WHERE
DATE_FORMAT(filterDate , '%d-%m-%Y') = '2010-08-01'