我正在尝试返回包含日期年份的记录,让我更好地解释一下,这是我的查询:
$query = "SELECT coach.*
FROM coach_career coach_cr
LEFT JOIN coach coach ON coach.id = coach_cr.coach_id
LEFT JOIN competition_seasons s ON s.id = :season_id
WHERE coach_cr.team_id = 95 AND `start` LIKE '%2017/2018%'";
我需要选择coach
上的所有coach_career
字段,一个coach
可以在不同的seasons
训练不同的团队,所以我需要聘请具备以下条件的教练season.name
的值为2017/2018
,但start
日期的日期时间格式为:2017-01-01
如何处理这种情况?
样本数据
教练:
id | name | last_name
1 foo test
coach_career:
coach_id | team_id | start | end
1 95 2017-01-01 NULL
competition_seasons
id | name |
1 2017/2018
答案 0 :(得分:1)
您可以使用BETWEEN
关键字。
$query = "SELECT coach.*
FROM coach_career coach_cr
LEFT JOIN coach coach ON coach.id = coach_cr.coach_id
LEFT JOIN competition_seasons s ON s.id = :season_id
WHERE coach_cr.team_id = 95 AND `start` BETWEEN '2017-01-01' and '2018-12-31'";
答案 1 :(得分:0)
尝试这个
$query = "SELECT coach.*
FROM coach_career coach_cr
LEFT JOIN coach coach
ON coach.id = coach_cr.coach_id
LEFT JOIN competition_seasons s
ON s.id = :season_id
WHERE coach_cr.team_id = 95
AND `start` LIKE '%2017%'
OR LIKE '%2018%'";
答案 2 :(得分:0)
对不起,我的答案是针对SQL Server。这是更正的版本:
create table coach(id integer, name char(100));
insert into coach(id, name) values(1, 'Jack'), (2, 'Peter');
create table coach_career (coach_id integer, season_id integer, start date, end date);
insert into coach_career values (1, 95, '20170101', null), (2, 95, '20010101', null);
create table competition_seasons (id integer, name char(100));
insert into competition_seasons values (95, '2017/2018');
SELECT coach.*
FROM coach_career cc
LEFT JOIN coach ON coach.id = cc.coach_id
LEFT JOIN competition_seasons s ON s.id = cc.season_id
WHERE cc.season_id = 95
AND '2017/2018' like concat('%', cast(extract(year from cc.start) as char(100)), '%');