将 SQL 查询转换为 TypeORM 查询构建器代码

Question

如何将 sql 查询转换为 TypeORM 查询生成器？

SELECT * FROM GameType
INNER JOIN 
(SELECT Draw.GameTypeID AS GameID, MIN(Draw.DrawDate) AS DrawDate
FROM Draw
WHERE Draw.DrawDate >= GETDATE()
GROUP BY Draw.GameTypeID) AS New ON New.GameID=GameType.GameTypeID

Answer 1

您可以使用第二个查询生成器来生成连接子查询的 SQL：

const subquery = await getRepository(Draw)
  .createQueryBuilder("Draw")
  .select("Draw.GameTypeID", "GameID")
  .addSelect("MIN(Draw.DrawDate)", "DrawDate")
  .where("Draw.DrawDate >= :currentDate", { currentDate: new Date() })
  .groupBy("Draw.GameTypeID");

const mainQuery = await getRepository(GameType)
  .createQueryBuilder("GameType")
  .innerJoin(
    `(${subquery.getQuery()})`,
    "New",
    "New.GameID = GameType.GameTypeID"
  )
  .setParameters(subquery.getParameters())
  .getMany();