jOOQ 中的 UPDATE-FROM 子句抛出 CTE 字段的期望

UPDATE-FROM clause in jOOQ throws an expecption for CTE field

我正在尝试将以下 PostgreSQL 查询转换为 jOOQ:

UPDATE book
SET amount = bat.amount
FROM (
    VALUES (2, 136),(5, 75)
) AS bat(book_id, amount)
WHERE book.book_id = bat.book_id;

FROM 子句中的 VALUES 是从 Map<Long, Integer> bookIdsAmountMap 参数创建的,我正在尝试以这种方式执行:

class BookUtilHelper {

    @SuppressWarnings("unchecked")
    static Table<Record2<Long, Integer>> batTmp(DSLContext dsl, Map<Long, Integer> bookIdAmountMapUpdated) {
        Row2<Long,Integer> array[] = new Row2[bookIdAmountMapUpdated.size()];
        int i = 0;
        for (Map.Entry<Long, Integer> pair : bookIdAmountMapUpdated.entrySet()) {
            array[i]=DSL.row(pair.getKey(), pair.getValue());
            i++;
        }
        Table<Record2<Long, Integer>> batTmp = DSL.values(array);
        batTmp.fields("book_id", "amount");         
        return batTmp;
    } 
}

然后,我也尝试创建可以像 this 示例中那样访问的字段

Field<Long> bookIdField = DSL.field(DSL.name("bat", "book_id"), Long.class);
Field<Integer> amountField = DSL.field(DSL.name("bat", "amount"), Integer.class);
Table<Record2<Long, Integer>> batTmp = BookUtilHelper.batTmp(dsl, bookIdAmountMapUpdated);
// ctx variable is of type DSLContext
ctx.update(BOOK).set(BOOK.AMOUNT, amountField).from(batTmp.as("bat")) 
 .where(BOOK.BOOK_ID.eq(bookIdField));

当我尝试更新图书时出现以下异常:

column bat.book_id does not exist

如有任何关于如何解决此问题的建议,我们将不胜感激。 :)

这没有任何效果:

batTmp.fields("book_id", "amount");

而这只会重命名 table,而不是列:

batTmp.as("bat")

改为这样写:

batTmp.as("bat", "book_id", "amount")