Fabio ve skutečnosti nemá pravdu, pokud to budou zahrnuty hodiny, minuty a sekundy
where date >= '2013-06-01' and date <= '2013-06-06'
se stane interně
where date >= '2013-06-01 00:00:00' and date <= '2013-06-06 00:00:00'
Takže vlastně jen vyberete 1 sekundu 6. 6. 2013, ne celý den!
To samé s BETWEEN samozřejmě. Chcete-li získat celý den 2013-06-06, musíte napsat
where date >= '2013-06-01' and date <= '2013-06-06 23:59:59'
nebo
where date BETWEEN '2013-06-01' AND '2013-06-06 23:59:59'
Neváhejte a vyzkoušejte si to sami (nebo to uvidíte naživo v sqlfiddle ):
create table foo (my_date date, my_timestamp timestamp, my_datetime datetime);
insert into foo values ('2013-06-06', '2013-06-06 12:23:34', '2013-06-06 13:35:48');
select * from foo
where
my_date <= '2013-06-06'; /*returns row*/
select * from foo
where
my_timestamp <= '2013-06-06'; /*does NOT return row*/
select * from foo
where
my_datetime <= '2013-06-06'; /*does NOT return row*/
select * from foo
where
my_timestamp <= '2013-06-06 23:59:59'; /*returns row*/
select * from foo
where
my_datetime <= '2013-06-06 23:59:59'; /*returns row*/