Knex onIn 用于列

Question

我需要使用 Knex 达到以下 SQL 结果：

select themes.id             as theme_id,
       themes.title          as theme_title,
       subthemes.id          as subtheme_id,
       subthemes.title       as subtheme_title,
       subthemes.parent_id   as subtheme_parent_id
from sections as themes
         left join sections as subthemes on subthemes.parent_id = themes.id
         left join section_questions on section_questions.section_id in (themes.id, subthemes.id)
where subthemes.parent_id is not null

上面是一个简单的自连接，但是我使用Knex失败的地方是在使用以下语句时：

.leftJoin<SectionQuestion>('section_questions', (join) =>
  join.onIn('section_questions.section_id', ['themes.id', 'subthemes.id'])
)

至少根据 Knex API，以上列名被视为值。

列的等效项是什么？

Answer 1

在这种情况下，您可以使用 knex.raw 使其成为列名。

.leftJoin<SectionQuestion>('section_questions', (join) =>
  join.onIn('section_questions.section_id', [
    knex.raw('??', 'themes.id'),
    knex.raw('??', 'subthemes.id'),
  ])
);

Knex onIn 用于列

Knex onIn for Columns

knex.js