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我有以下SQL查詢的作品就像一個冠軍:轉換從SQL到HQL
select u.id
from morder_item mi
join book b on b.id = ${book.id}
join book_product bp on bp.book_id = b.id
join morder mo on mo.id = mi.morder_id
join user u on u.id = mo.user_id
where mi.book_product_id = bp.id
我試圖將其轉換爲HQL,但問題是,我看到的例子過於簡單,根本不處理連接。我需要獲取所有用戶標識,但查詢源自MOrderItem域。任何幫助表示讚賞。
更新:對於有人試圖幫助進行轉換的緣故:
class MOrder {
static hasMany = [items: MOrderItem]
static belongsTo = [user: User]
}
class MOrderItem {
BookProduct bookProduct
static belongsTo = [morder: MOrder]
}
class User {
static hasMany = [morders: MOrder]
}
class BookProduct {
static belongsTo = [book: Book]
}
感謝伯特!真的很感謝幫助。 – Gregg