表達式類型數值對於分類無效

Question

我忙於在不同數據庫之間的SQL中使用UNION ALL。

SELECT  CostValue AS [COST OF SALES], Customer AS [CUSTOMER CODE], DocumentType AS [DOCUMENT TYPE], Invoice AS [INVOICE NO], InvoiceDate AS [INVOICE DATE], 
        DATEPART(dd, InvoiceDate) AS [INVOICE DAY], Mass AS MASS, NetSalesValue AS SALES, NetSalesValue - CostValue AS [GROSS PROFIT], OrderType, 
        QtyInvoiced AS QUANTITY, SalesOrder, StockCode AS [STOCK CODE], TrnMonth AS [FIN MONTH], TrnYear AS [FIN YEAR], TrnYear * 100 + TrnMonth AS YYYYMM, 
        'SHP' AS COMPANY 
FROM   SomeCompanyA.dbo.SalesDetail 
WHERE  (LineType = 1) AND (TrnYear >= 2010) 
UNION ALL 
SELECT  CostValue AS [COST OF SALES], Customer AS [CUSTOMER CODE],  DocumentType AS [DOCUMENT TYPE], Invoice AS [INVOICE NO], InvoiceDate AS [INVOICE DATE], 
        DATEPART(dd, InvoiceDate) AS [INVOICE DAY], Mass AS MASS, NetSalesValue AS SALES, NetSalesValue - CostValue AS [GROSS PROFIT], OrderType, 
        QtyInvoiced AS QUANTITY, SalesOrder, StockCode AS [STOCK CODE], TrnMonth AS [FIN MONTH], TrnYear COLLATE DATABASE_DEFAULT AS [FIN YEAR], (TrnYear * 100) COLLATE database_default + TrnMonth AS YYYYMM, 
        'SGF' AS COMPANY 
FROM   SQLXXXXXX.SomeCompanyB.dbo.SalesDetail AS SalesDetail_1 
WHERE  (LineType = 1) AND (TrnYear >= 2010) 

我在執行時收到以下錯誤「表達式類型的數字是COLLATE子句無效」我認爲這是從這裏（TrnYear * 100）COLLATE database_default + TrnMonth AS YYYYMM

我不來了肯定還有其他什麼來分解這個，因爲我理解這是一個連接而不是一個隱式轉換。

請有人提供一些建議，如何正確施放此。

我也看過這裏Use Collate in CONCAT，但我不明白這是如何工作的，因爲我在一年中使用操作員。

也許我錯過了一些東西。任何意見，將不勝感激。

由於

Answer 1

COLLATE爲文本類型，以及（TrnYear * 100）的計算結果爲一個數字。在使用COLLATE之前，嘗試使用CAST（（TrnYear * 100）AS VARCHAR）轉換爲varchar。