Question

尝试运行此SQL脚本

update Promotions
   set PromotionDiscountData = '<ArrayOfPromotionRuleBase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><PromotionRuleBase xsi:type="StartDatePromotionRule"><StartDate>2013-11-11T00:00:00</StartDate></PromotionRuleBase><PromotionRuleBase xsi:type="ExpirationDatePromotionRule"><ExpirationDate>2014-01-12T00:00:00</ExpirationDate></PromotionRuleBase><PromotionRuleBase xsi:type="ExpirationNumberOfUsesPerCustomerPromotionRule"><NumberOfUsesAllowed>1</NumberOfUsesAllowed></PromotionRuleBase><PromotionRuleBase xsi:type="ProductIdPromotionRule"><ProductIds><int>55232</int></ProductIds><RequireQuantity>false</RequireQuantity><Quantity>1</Quantity><AndTogether>false</AndTogether></PromotionRuleBase></ArrayOfPromotionRuleBase>'
 where PromotionDiscountData = '<ArrayOfPromotionRuleBase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><PromotionRuleBase xsi:type="StartDatePromotionRule"><StartDate>2013-11-18T00:00:00</StartDate></PromotionRuleBase><PromotionRuleBase xsi:type="ExpirationDatePromotionRule"><ExpirationDate>2014-01-12T00:00:00</ExpirationDate></PromotionRuleBase><PromotionRuleBase xsi:type="ExpirationNumberOfUsesPerCustomerPromotionRule"><NumberOfUsesAllowed>1</NumberOfUsesAllowed></PromotionRuleBase><PromotionRuleBase xsi:type="ProductIdPromotionRule"><ProductIds><int>55232</int></ProductIds><RequireQuantity>false</RequireQuantity><Quantity>1</Quantity><AndTogether>false</AndTogether></PromotionRuleBase></ArrayOfPromotionRuleBase>'

但是收到此错误

Msg 402，Level 16，State 1，Line 1 数据类型xml和varchar在等于运算符中不兼容。

任何想法如何解决这个问题？

基本上在每个单元格内我只想更改StartDate

Answer 1

我认为PromotionDiscountData列的类型是XML，因此我建议您使用以下代码段：

update Promotions
set PromotionDiscountData = '<ArrayOfPromotionRuleBase ...'
where CAST(PromotionDiscountData as NVARCHAR(MAX)) = '<ArrayOfPromotionRuleBase...'

更新SQL单元的一部分

1 个答案: