azure - Found operand types 'Edm.DateTime' and 'Edm.String' for operator kind 'GreaterThanOrEqual'

Question

Getting an error while trying to get the entities from Azure Table on basis of Timestamp which is of type Edm.DateTime:

StorageError: A binary operator with incompatible types was detected. Found operand types 'Edm.DateTime' and 'Edm.String' for operator kind 'GreaterThanOrEqual'

Code:

let res: IQueryPrePostAuthResponse[] = [];
let query = new TableQuery();
query = query.where('PartitionKey eq ?', searchQuery.user_id);

const entGen = TableUtilities.entityGenerator;
const dateFrom = entGen.DateTime(new Date(searchQuery.date_from));
const dateTo = entGen.DateTime(new Date(searchQuery.date_to));
query = query.and(
 'Timestamp >= ? and Timestamp <= ?',
  dateFrom,
  dateTo,
);

As in code both variables(dateFrom, & dateTo) are of DateTime type and Timestamp is of DateTime type. According to Odata Docs link query comparison operator, The data types on both sides of a comparison operator must be compatible. Here is my case both are the same, been then I am getting an error.

Answer 1

当我在将它发送到查询之前打印dateTo和dateFrom时。

const entGen = TableUtilities.entityGenerator;
const dateFrom = entGen.DateTime(new Date(searchQuery.date_from));
const dateTo = entGen.DateTime(new Date(searchQuery.date_to));
console.log(dateFrom);
console.log(dateTo);

我在输出中得到了这个：- 经过大量调试后，我知道我发送dateFrom和dateTo的方式不正确。
正确的方法是dateFrom._和dateTo._。但这应该在 Azure Table 或 OData Query 中提及，但那里没有。

根据 Odata Docs链接查询比较运算符，比较运算符两侧的数据类型必须兼容。

这会造成混乱，因为即使两者的类型相同也会出错。正确的代码如下：-

let res: IQueryPrePostAuthResponse[] = [];
let query = new TableQuery();
query = query.where('PartitionKey eq ?', searchQuery.user_id);

const entGen = TableUtilities.entityGenerator;
const dateFrom = entGen.DateTime(new Date(searchQuery.date_from));
const dateTo = entGen.DateTime(new Date(searchQuery.date_to));
query = query.and(
 'Timestamp >= ? and Timestamp <= ?',
  dateFrom._,
  dateTo._,
);

现在我可以根据Timestamp属性从 Azure 表中查询实体。