问题描述
好吧，这个问题的答案在我的脑子里，可能在座垫之间，但我无法取笑它。所以我只想问。
Okay, the answer to this question is in my brain somewhere, probably between the seat cushions, but I can't tease it out. So I'll just ask.
我有两张桌子，Case和Court。在这两个表格中我都有以下字段：
I have two tables, Case and Court. In the both tables I have these fields:
县
CourtLevel
CourtLevel
CourtNumber
CourtNumber
如果Case表中的County值为"Justice"，我想使用所有三个字段连接表。否则，我想只在县和CourtLevel上加入它们。
If the County value in the Case table is "Justice", I want to join the tables using all three fields. Otherwise, I want to join them only on County and CourtLevel.
条件连接在SQL中看起来如何？
How does that conditional join look in SQL?
tod
推荐答案
我认为您可能需要两个单独的查询（以使其更简单）。
I think you may need two separate queries (to make it simpler).
我的2美分......
Just my 2 cents...
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