根据文档,您应该能够查询NULL ClassRef
值,如下所示:
select * from Estimate where ClassRef = ' '
但是,该查询导致验证错误:
{
"Fault": {
"Error": [
{
"Message": "Invalid ID",
"Detail": "Id should be a valid number. Supplied value: ",
"code": "2030",
"element": "ClassRef"
}
],
"type": "ValidationFault"
},
"time": "2014-06-19T12:34:43.37-07:00"
}
如何查询null ClassRef
?
答案 0 :(得分:1)