Here is my MySQL query.
SELECT Timestamp,a_number,Verdict,OrderId
FROM Main
WHERE Timestamp between DATE '2014-03-12' AND '2014-03-11'
and a_location like '%london%';
In above query Timestamp is one of the field in Main table. But when i execute the query it is executing and getting the output as empty set.
When I checked Timestamp values that stored in database i am getting the values that are given below
1323517427743,1323867674980.
What is the mistake that i have done. And what should i make change to get my need.
col BETWEEN a AND b is a syntactic sugar over col >= a AND col <= n - i.e., you must use the correct order:
SELECT Timestamp,a_number,Verdict,OrderId
FROM Main
WHERE Timestamp between DATE '2014-03-11' AND '2014-03-12'
AND a_location like '%london%';
Try using back ticks around the DATE column
SELECT Timestamp,a_number,Verdict,OrderId
FROM Main
WHERE Timestamp between `DATE` '2014-03-12' AND '2014-03-11'
and a_location like '%london%';
If the Timestamp's column type is timestamp, then you could just do:
SELECT `Timestamp`, a_number,Verdict,OrderId
FROM Main
WHERE `Timestamp` between '2014-03-11' AND '2014-03-12'
and a_location like '%london%';
If it is integer, then you should do:
SELECT `Timestamp`, a_number,Verdict,OrderId
FROM Main
WHERE `Timestamp` between UNIX_TIMESTAMP('2014-03-11') AND UNIX_TIMESTAMP('2014-03-12')
and a_location like '%london%';
And for between A and B, A should less or equal than B, or no result will be returned.
Related
I have a column where the dates are type varchar. For example:
15-10-2018
16-10-2018
19-10-2018
23-10-2018
29-10-2018
8-11-2018
9-11-2018
10-11-2018
12-11-2018
when I consult with the following query
SELECT DISTINCT date FROM `test` WHERE date BETWEEN '15-10-2018' and '9-11-2018'.
I have the right result.
15-10-2018
16-10-2018
19-10-2018
23-10-2018
29-10-2018
8-11-2018
9-11-2018
but if the query is:
SELECT DISTINCT date FROM `test` WHERE date BETWEEN '15-10-2018' and '10-11-2018'.
or
SELECT DISTINCT date FROM `test` WHERE date BETWEEN '15-10-2018' and '12-11-2018'.
The answer I get is empty.
I think it's only validating the days in the sql.
I need to get the right dates.
I think the problem is the fact that the column is varchar, so it's comparing characters instead of a range of dates. I will recommend convert the column to date type and try again.
Alternative if you cannot change the type of the column you could cast it to date format like this:
SELECT DISTINCT `date` FROM `test` WHERE STR_TO_DATE(`date`,'%d-%m-%Y') BETWEEN '2018-10-15' AND '2018-11-10';
I tested with your data and it works. Of course this could put some extra effort on the database and will not use indexes.
You need to set the datatype to date and update your dates to be using date for a more reliable result. Once done you should be using the database format for the dates in your WHERE clause.
Try
SELECT DISTINCT date FROMtestWHERE date BETWEEN '2018-10-15' and '2018-11-10'
im trying to select all the rows having a particular year in mysql.
the datetime is in a format such as 2016-12-02 10:00:00 so i am trying to use wildcard to do it. However i tried
SELECT * FROM all-data.prices where YEAR(timestamp)= "2005";
and SELECT * FROM all-data.prices where timestamp= "2005%" ;
and it didnt work for me.
Any suggestion on which is the correct syntax for such select statement?
It is not the best idea to use a FUNCTION on a field in the WHERE Clause. Then MySQL must calculate YEAR(timestamp) from every ROW before it can compare. So it is a FULL TABLE SCAN and cant use a INDEX.
A better was is to compare the timestamp with a Range
SELECT * from your_table WHERE `timestamp` >= '2015-01-01 00:00:00' AND `timestamp` < '2016-01-01 00:00:00';
Then MySQL can use a INDEX (if there is one)
To use % you also must use the LIKE Keyword
SELECT '2015-01-01 23:50:00' LIKE '2015%';
in your sample
SELECT * from your_table WHERE `timestamp` LIKE '2015%';
I am trying folowing on my_table where modifiedtime is of type datetime
select DATE_FORMAT(modifiedtime,'%d-%m-%Y') from my_table
where DATE_FORMAT(modifiedtime,'%d-%m-%Y') between '05-11-2013' and '28-11-2013';
The query gives me some other record too which are not falls between above dates, for example there is a record in result set dated '04-01-2014'
select DATE_FORMAT(modifiedtime,'%d-%m-%Y') from my_table
where DATE_FORMAT(modifiedtime,'%d-%m-%Y')='05-11-2013'
this query works fine and gives all the records for the given date
why the first behaves like that?
How can i correct it?
what is the efficient way to implement it?
such that i can get all the records only between given two dates.
SELECT
DATE_FORMAT(modifiedtime, '%d-%m-%Y')
FROM
my_table
WHERE
modifiedtime BETWEEN STR_TO_DATE('05-11-2013', '%d-%m-%Y') AND STR_TO_DATE('28-11-2013', '%d-%m-%Y');
DATE_FORMAT() returns TEXT type column and dates can't be applied.
Use without DATE_FORMAT in the WHERE
select DATE_FORMAT(modifiedtime,'%d-%m-%Y') from my_table
where modifiedtime between '05-11-2013' and '28-11-2013';
you DATE_FORMAT function converts the column modifiedtime to String.
and hence in your first query you do a string comparison rather then a date comparison.
Also your date literal is not incorrect. It must be of form YYYY-MM-DD
select DATE_FORMAT(modifiedtime,'%d-%m-%Y') from my_table
where cast(modifiedtime as date) between '2013-11-05' and '2013-11-28';
I have a Db with one table with 3 fields like the following:
user_id TimeStamp Azioni
where the 'timestamp' field is a varchar(25) like this: 2012/09/19 16:34:01.95
It is a varchar and not a timestamp value because i need it to be in the shown format.
And i cannot change its type even if i wanted to.
Now, I'm trying to get all db entries with the same date. For example, when Timestamp contains 2012/09/19
I tied several queries:
Query 0:
SELECT Azioni.Action
FROM Azioni
WHERE TimeStamp LIKE '2012/09/19%'
Query 1:
SELECT `Azioni`.*
FROM Azioni
Where `TimeStamp` LIKE '{2012/09/19}%'
Query 2:
SELECT `Azioni` . *
FROM Azioni
WHERE LOCATE( '2008/09/19', `TimeStamp` ) >0
Query 3:
SELECT `Azioni` . *
FROM Azioni
WHERE INSTR( `TimeStamp` , '2012/09/19' ) >0
Query 4:
SELECT * FROM `Azioni`
WHERE `TimeStamp` like '2012|/09|/19%' escape '|'
and I always get: MySQL returned an empty result set (i.e. zero rows).
But I am sure there are rows containing the said timestamp. What am i doing wrong? Does the 'space' between date and time create a problem? If so how can i solve it? Do you have any suggestion?
EDIT:
Aa suggested, from
SELECT TIMESTAMP, HEX( TIMESTAMP )
FROM Azioni
i get the following
2009-06-06 09:28:00.0000 323030392D30362D30362030393A32383A30302E30303030
2009-06-06 09:29:00.0000 323030392D30362D30362030393A32393A30302E30303030
2009-06-06 09:30:51.0000 323030392D30362D30362030393A33303A35312E30303030
2009-06-06 14:25:00.0000 323030392D30362D30362031343A32353A30302E30303030
2009-06-06 14:26:00.0000 323030392D30362D30362031343A32363A30302E30303030
EDIT 2:
ehm yeah, i was typing the date wrong in the query. Sigh, i'm stupid. Sorry for wasting your time guys.
How about this:
where timestamp like '2012/09/19%'
And, if you are going to call the field timestamp you should store it as a date/datetime/timestamp. Call it something else if it is going to be stored as a string. Timestamp is actually the name of a type in MySQL, so having that in a column name with a different type is quite misleading.
EDIT:
Have you tried:
where left(timestamp, 10) = '2012/09/19'
It sounds like there are string characters in the field, which are preventing reasonable code from working.
SELECT * FROM Azioni
WHERE `TimeStamp' LIKE '2012/09/19%'
I have 2 PDO database connections. I am doing a search within a MS SQL table for a row that closest matches a date (mysql datetime) row.
I have mysql.table1.date passed to mssql.table and I am looking for the closest date accordingt to the mssql.table.date. It is also defined as a datetime field. I only need 1 row returned, the closest to the time, so in essence:
SELECT * FROM table ORDER BY CLOSEST(mysqldate = mssql.table.date) LIMIT 1;
I know the syntax above is incorrect but that basically outputs what I need, but I really do not know how to do this with mssql.
Any help?
Basically u can find the difference of the mysql date with all the dates in mssql.Table.Date column .Then u need to select the least difference value from the above query .Hopefully the below query might help u
;with CTE as
(
Select mssql.table.date,row_number()
over (order by abs(datediff(day,mysqlDate,mssql.table.date))) rowNumber
from mssql.Table)
select mssql.table.date from CTE where rowNumber=1
A simple solution which worked for me was to do the following:
SELECT * FROM `table` WHERE `date` < `startDate` ORDER BY `date` LIMIT 1;
This returns 1 row matching the closest time to the time I am passing :)