As I recall, there’s no difference. But see for yourself if: explain plan for SELECT * FROM `table` WHERE `unix_date` BETWEEN 1291736700 AND 1291737300 and: explain plan for SELECT * FROM `table` WHERE `unix_date` >= 1291736700 AND `unix_date` <= 1291737300 produce the same plans.
With dates (and times) many things become simpler if you use >= start AND < end. For example: SELECT user_id FROM user_logs WHERE login_date >= ‘2014-02-01’ AND login_date < ‘2014-03-01’ In this case you still need to calculate the start date of the month you need, but that should be straight forward in any number … Read more
You can use re.findall() to find all numbers within the parenthesis: >>> import re >>> l = [ … “PIC S9(02)V9(05).”, … “PIC S9(04).”, … “PIC S9(03).”, … “PIC S9(03)V9(03).”, … “PIC S9(02)V9(03).”, … “PIC S9(04).”, … “PIC S9(13)V9(03).” … ] >>> pattern = re.compile(r”\((\d+)\)”) >>> for item in l: … print(pattern.findall(item)) … [’02’, ’05’] … Read more
A date is a point in time, not a time span. ’12/31/2010′ is a point, too. Namely, it’s the midnight of the 31st of December. Everything that happened after this point is ignored. That’s exactly the behaviour you want (even if you haven’t realised that yet). Do not think that when you choose to omit … Read more
I agree with Lieven’s answer create a table containing all the months you could ever require, and use that to “LEFT JOIN” to your results table. Remember, this is a really tiny table, only 365(ish) rows per year of data you have… And you can easily write some code to populate this table initially We … Read more
You don’t need to apply to_date() to sysdate. It is already there: select 1 from dual WHERE sysdate BETWEEN TO_DATE(’28/02/2014′, ‘DD/MM/YYYY’) AND TO_DATE(’20/06/2014′, ‘DD/MM/YYYY’); If you are concerned about the time component on the date, then use trunc(): select 1 from dual WHERE trunc(sysdate) BETWEEN TO_DATE(’28/02/2014′, ‘DD/MM/YYYY’) AND TO_DATE(’20/06/2014′, ‘DD/MM/YYYY’);
This is not possible without a recursive common table expression, which was introduced in SQLite 3.8.3: WITH RECURSIVE dates(date) AS ( VALUES(‘2015-10-03’) UNION ALL SELECT date(date, ‘+1 day’) FROM dates WHERE date < ‘2015-11-01’ ) SELECT date FROM dates;
You can do either… $qb->where(‘e.fecha BETWEEN :monday AND :sunday’) ->setParameter(‘monday’, $monday->format(‘Y-m-d’)) ->setParameter(‘sunday’, $sunday->format(‘Y-m-d’)); or… $qb->where(‘e.fecha > :monday’) ->andWhere(‘e.fecha < :sunday’) ->setParameter(‘monday’, $monday->format(‘Y-m-d’)) ->setParameter(‘sunday’, $sunday->format(‘Y-m-d’));
The BETWEEN operator is inclusive. From Books Online: BETWEEN returns TRUE if the value of test_expression is greater than or equal to the value of begin_expression and less than or equal to the value of end_expression. DateTime Caveat NB: With DateTimes you have to be careful; if only a date is given the value is … Read more
From the MySQL-manual: This is equivalent to the expression (min <= expr AND expr <= max)