有效SQL上的Visual Studio错误

我在visualstudioforsql中遇到了一个执行良好的恼人错误。

SELECT InvoiceLines.LineID, 
       InvoiceLines.InvoiceID, 
       InvoiceLines.Text, 
       InvoiceLines.Rate, 
       InvoiceLines.Count, 
       InvoiceLines.Rate * InvoiceLines.Count AS LineTotal, 
       ((InvoiceLines.Rate * InvoiceLines.Count) * (1 + Invoices.VatRate / 100)) * (1 - CAST(Invoices.Discount AS money) * InvoiceLines.ApplyDiscount / 100) AS LineTotalIncVat, InvoiceLines.ApplyDiscount
  FROM InvoiceLines 
LEFT JOIN Invoices ON Invoices.InvoiceID = InvoiceLines.InvoiceID

LineTotalIncVat试图做的是计算发票项目的总额,同时加上增值税和减去折扣,是的,可能更好地在代码中这样做(如果我可以)

visual studio给出的错误是:

分析查询时出错[token line number=1,token line offset=14,token in error=InvoiceLines]

即使它在查询生成器中验证和执行时没有问题。。。