連接經典的ASP / VBScript SQL字符串

Question

我想選擇列和聯接表，其中聯接條件除了點之外還連接選定的列。 例如

SELECT TBL1.ID,
TBL1.COUNTRY As A,
TBL1.STATE As B,
TBL1.CODE As C
FROM TBL1, TBL2
WHERE TBL2.ID = A+'.'+B+'.'+C

數據使TBL2.ID看起來像“ US.NY.61 ”，其中US是TBL1.COUNTRY ， NY是TBL1.STATE ，等等。

更新：SQl小提琴： http ://sqlfiddle.com/#!3/26b6b/4

Answer 1

嘗試這樣的事情怎么樣

SELECT TBL1.ID,
TBL1.COUNTRY As A,
TBL1.STATE As B,
TBL1.CODE As C
FROM TBL1 
  INNER JOIN TBL2 ON CAST(TBL1.COUNTRY AS varchar(20)) + '.' + CAST(TBL1.STATE AS varchar(20)) + '.' + CAST(TBL1.CODE AS varchar(20)) = CAST(TBL2.ID AS varchar(20))

添加了將四個字段組合和比較之前將其強制轉換為varchar的代碼。

Answer 2

SELECT T.name,T2.nam FROM
T INNER JOIN T2
ON T.id = (T2.one + '.' + CAST(T2.two as varchar(50)) + '.' + CAST( T2.thr as varchar(50) ))