我已經在NHibernate中映射了一個類層次結構。就這麼簡單: class abstract Animal
class Dog : Animal
class Cat: Animal
class Cow: Animal
在映射我有ANIMAL_TYPE列設置鑑別值: Dog -> dog
Cat -> cat
Cow -> cow
所有類型的查詢工作。除此之外,當我需要獲取兩種特
基本上,我一直在努力做到這一點(基於兩列數不同): select count(distinct(checksum(TableA.PropertyA, TableB.PropertyB)))
from TableA
left outer join TableB
on TableA.TableBId = TableB.Id
where PropertyA like '%123%'
被谷歌搜
我試圖列出一組文章/博客的所有年份和月份。 var query = (from article in _session.Query<Article>()
where article.Parent == articleList && article.PublishOn != null
group article by new {article.PublishOn.Valu
有沒有辦法將ICriteria結果用作後續條件查詢的「基礎」? 例如,如果我想創建一個查詢 SELECT department_id, sum(cost) AS total
FROM payment
GROUP BY payment.department_id
存儲結果爲query0,然後執行查詢 SELECT department.name, total
FROM department