问题描述
我有两张桌子
create table jobs (
id varchar unique primary key,account_email varchar not null,active boolean not null default true,enabled boolean not null default false,name varchar (50) not null,...
);
create table job_tags (
job_id varchar not null,tag varchar(50) not null,foreign key (job_id) references jobs(id) on delete cascade,unique (job_id,tag)
);
这个 sql 查询来获取工作 SELECT * FROM jobs INNER JOIN job_categories ON (jobs.category_id=job_categories.category_id) WHERE jobs.id=$1
由于我的经验很少,我再执行一次查询以加载 job_tags。是否可以只创建一个?我使用 golang sqlx,谢谢
解决方法
是的,你几乎明白了:
SELECT * FROM jobs
INNER JOIN job_categories ON (jobs.category_id=job_categories.category_id)
INNER JOIN job_tags ON (jobs.id = job_tags.job_id)
WHERE jobs.id=$1