it has a DefiningQuery and no <InsertFunction> element exists in the <ModificationFunctionMapping> element

Unable to update the EntitySet ‘Users‘ because it has a DefiningQuery and no <InsertFunction> element exists in the <ModificationFunctionMapping> element to support the current operation.

检查该 Entity 对应的 表是否没有主键，设置表的主键，确保Entity的主键和表的主键一致