Mysql DATE_FORMAT and timing - mysql

Question

i have a table called "reportinc" where i have to extract -it is VARCHAR field- items from 1 or some days past at 18:01 (time format as %H:%i) to today at 18:00.
I tried with this query
SELECT `ID incidente`, `Data/ora apertura`
FROM `reportinc`
WHERE `Data/ora apertura`
BETWEEN
(
SELECT date_format( now( ) - INTERVAL 1
DAY , "%d/%m/%y at 18:01 " )
)
AND
(
SELECT date_format( now( ) , "%d/%m/%y at 18:00 " )
I want to extract from yesterday at 18:01 to today 18:00.
But the results are form 00:00 yesterday to today.
It dont consider 18:00 or 18_01 as valid time format.
How specify time into query?
MANY THANKS AGAIN

Answer 1

The Data/ora apertura field must be a DATETIME field, or you have to make a CAST.
Then you must do this:
SELECT `ID incidente`, `Data/ora apertura`
FROM `reportinc`
WHERE `Data/ora apertura`
BETWEEN
(
SELECT date_format( now( ) - INTERVAL 1 DAY , "%Y-%m-%d 18:01:00" )
)
AND
(
SELECT date_format( now( ) , "%Y-%m-%d 18:00:00"
)
Between do not work as you expected when the field type is VARCHAR.

Answer 2

At first change the format from varchar to valid date format. varchar takes the value as string and you will have to use regex to bifurcate date and time. Better to go with former option.

Answer 3

EDIT added more specific date time format
I ran in to the same problem the combination between time and date. Time is ignored therefore you get the results form the whole day.
Try PHP or another programming language to manipulate the MySQL out. Or try as I suggest to change the import method of the CSV file.
SELECT *,CAST((STR_TO_DATE(`Data/ora apertura`, '%d/%m/%Y %H.%i')) AS DATETIME)
AS DATE_TIME
FROM reportinc
WHERE (CAST((STR_TO_DATE(`Data/ora apertura`, '%d/%m/%Y %H.%i')) AS DATETIME)) >= ('2012-22-01 21:00');
SELECT *,CAST((STR_TO_DATE(`Data/ora apertura`, '%d/%m/%Y %H.%i')) AS DATETIME)
AS DATE_TIME
FROM reportinc
WHERE (STR_TO_DATE(`Data/ora apertura`, '%d/%m/%Y %H.%i')) >= ('2012-22-01 21:00');
Sample data:
CREATE TABLE reportinc (
`ID_incidente` int auto_increment primary key,
`Data/ora apertura` varchar(30)
);
INSERT INTO reportinc (`Data/ora apertura`)
VALUES
("31/07/2012 10.46"),
("31/07/2012 10.47"),
("22/01/2013 20.00"),
("23/01/2013 10.00");
SQL FIDDLE demo
---
Try something like:
Using the cast function:
SELECT * FROM reportinc WHERE (CAST(`Data/ora apertura` AS DATETIME)) >= NOW() - INTERVAL 3 hour;
Using the str_to_date function:
SELECT * FROM reportinc WHERE (STR_TO_DATE(`Data/ora apertura`,'%Y-%m-%d %H:%i:%s')) >= NOW() - INTERVAL 3 hour;
You are a bit unclear about the time range so I took 3 hours as a example. You can also use a specific date and time.
Using cast:
`SELECT * FROM reportinc WHERE (CAST(`Data/ora apertura` AS DATETIME)) >= ('2013-01-22 20:00:00');`
Using str_to_date
SELECT * FROM reportinc WHERE (STR_TO_DATE(apertura, '%Y-%m-%d %H:%i:%s')) >= ('2013-01-21 20:00:00');
Sample data:
CREATE TABLE reportinc (
`ID_incidente` int auto_increment primary key,
`Data/ora apertura` varchar(30),
`Data/ora apertura1` datetime
);
INSERT INTO reportinc ( `Data/ora apertura`, `Data/ora apertura1`)
VALUES (NOW() - INTERVAL 1 day, NOW() - INTERVAL 1 day),
(NOW() - INTERVAL 1 hour, NOW() - INTERVAL 1 hour),
(NOW() - INTERVAL 3 hour, NOW() - INTERVAL 3 hour),
(NOW() - INTERVAL 6 hour, NOW() - INTERVAL 6 hour),
(NOW() - INTERVAL 9 hour, NOW() - INTERVAL 9 hour),
(NOW() - INTERVAL 1 year, NOW() - INTERVAL 1 year);
SQL FIDDLE DEMO
B.T.W. My advices is to stop using slashes, spaces etc in column and table names.
I would appreciated it if you would accept answers that have helped you.