set-valued function called in context that cannot accept a set
2009-03-14 20:16
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今天在C#中调PostgreSql中的函数，弄了很久，老是出一些奇怪的错误，其中“
set-valued function called in context that cannot accept a set
”最常见，试了许久总算找到了正确方法。
在数据库里执行函数，可以写“select funcitonname();”也可以写“select * from functionname()”
按理到数据库里也可以使用以上两种，可是第一种写法却遇上了以上错误，而用第二种则正确执行。暂时还没搞懂。
set-valued function called in context that cannot accept a set
”最常见，试了许久总算找到了正确方法。
在数据库里执行函数，可以写“select funcitonname();”也可以写“select * from functionname()”
按理到数据库里也可以使用以上两种，可是第一种写法却遇上了以上错误，而用第二种则正确执行。暂时还没搞懂。
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