未知的 Sql 异常（编号 = 102，消息 = ',' 附近的语法不正确。）答案

【问题标题】：Unknown Sql Exception (Number = 102, Message=Incorrect syntax near ','.)未知的 Sql 异常（编号 = 102，消息 = ',' 附近的语法不正确。）
【发布时间】：2019-10-07 07:01:07
【问题描述】：

我在 ',' 附近遇到了这个语法错误

我已经尝试了一些解决方案，因为这个问题之前已经在这个论坛中提出过，但无济于事。

string sqlSelect = "SELECT"
+ " 'RI' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",SalesAgent, LocalNetTotal AS LocalAmount,"
+ "(Outstanding * CurrencyRate) AS LocalBalance"
+ " FROM ARINVOICE"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RD' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",SalesAgent, LocalNetTotal AS LocalAmount"
+ ",Outstanding AS LocalBalance"
+ " FROM ARDN"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RC' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",'' AS SalesAgent, LocalNetTotal AS LocalAmount"
+ ",(NetTotal - KnockOffAmt + RefundAmt) * CurrencyRate AS LocalBalance"
+ " FROM ARCN"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RP' AS 'DocType', 'DebtorCode', 'DocNo', 'DocDate', 
[Description]"
+ ",'' AS SalesAgent, LocalPaymentAmt AS LocalAmount"
+ ",LocalUnappliedAmount AS LocalBalance"
+ " FROM ARPAYMENT"
+ " WHERE Cancelled = 'F'";

他们对我的查询有什么问题吗？因为我已经检查了 2 天，没有发现任何错误，我不知道。希望任何人都可以提供帮助。

【问题讨论】：

错误信息是什么？你能显示完整的查询吗？您似乎在声明 @sqlSelect 时错过了 @。为什么要用双引号而不是单引号？
我还想问为什么双引号而不是单引号..

标签： sql sql-server-2008 syntax syntax-error

【解决方案1】：

你试过取消引用 DocType 吗？

string sqlSelect = "SELECT"
+ " 'RI' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",SalesAgent, LocalNetTotal AS LocalAmount,"
+ "(Outstanding * CurrencyRate) AS LocalBalance"
+ " FROM ARINVOICE"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RD' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",SalesAgent, LocalNetTotal AS LocalAmount"
+ ",Outstanding AS LocalBalance"
+ " FROM ARDN"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RC' AS DocType, DebtorCode, DocNo, DocDate, [Description]"
+ ",'' AS SalesAgent, LocalNetTotal AS LocalAmount"
+ ",(NetTotal - KnockOffAmt + RefundAmt) * CurrencyRate AS LocalBalance"
+ " FROM ARCN"
+ " WHERE Cancelled = 'F'"
+ " UNION"
+ " SELECT 'RP' AS DocType, DebtorCode, DocNo, DocDate, 
[Description]"
+ ",'' AS SalesAgent, LocalPaymentAmt AS LocalAmount"
+ ",LocalUnappliedAmount AS LocalBalance"
+ " FROM ARPAYMENT"
+ " WHERE Cancelled = 'F'";

【讨论】：

【解决方案2】：

在 SQL SERVER 中，检查以下脚本-

declare @sqlSelect nvarchar(max)
select @sqlSelect = N' 
SELECT ''RI'' AS DocType,DebtorCode,DocNo,DocDate,[Description],SalesAgent,LocalNetTotal AS LocalAmount,
(Outstanding * CurrencyRate) AS LocalBalance 
FROM ARINVOICE WHERE Cancelled = ''F''
UNION
SELECT ''RD'' AS DocType,DebtorCode,DocNo,DocDate,[Description],SalesAgent,LocalNetTotal AS LocalAmount,Outstanding AS LocalBalance
FROM ARDN WHERE Cancelled = ''F''
UNION
SELECT ''RC'' AS DocType,DebtorCode,DocNo,DocDate,[Description],'''' AS SalesAgent,LocalNetTotal AS LocalAmount,
((NetTotal - KnockOffAmt + RefundAmt) * CurrencyRate) AS LocalBalance
FROM ARCN WHERE Cancelled = ''F''
UNION
SELECT ''RP'' AS DocType,DebtorCode,DocNo,DocDate,[Description],'''' AS SalesAgent,LocalPaymentAmt AS LocalAmount,
LocalUnappliedAmount AS LocalBalance
FROM ARPAYMENT WHERE Cancelled = ''F'' '

print (@sqlSelect)

--exec (@sqlSelect)

【讨论】：