SALES: 1-800-867-1380
1 out of 2 rated this helpful - Rate this topic

Query records operation

Updated: September 24, 2012

The query operation returns items from a table.

The request may be specified as follows. Replace <service_name> with your mobile service name and <table_name> with the name of the table to access.

 

HTTP Verb Request URI HTTP Version

GET

https://<service_name>.azure-mobile.net/tables/<table_name>

HTTP/1.1

URI Parameters

Windows Azure Mobile Services supports the following subset of the query option parameters defined by the Open Data Protocol (OData).

 

URI Parameter Required Description

$filter

No

Restricts returned items based on a filter predicate.

$inlinecount

No

Returns a count of all items that could be returned in the base query without paging applied. You must specify a value of allpages for this parameter.

$orderby

No

Orders the returned items by one or more columns. Ordering can be specified as ascending (asc), which is the default, or descending (desc)

$select

No

Defines a new projection of data by specifying the columns included in the returned data.

$skip

No

Specifies the number of records from the base query to skip before returning items. This is used for paging results. For more information, see Add paging to your queries.

$top

No

Specifies the number of items to include in response. This is used for paging results. For more information, see Add paging to your queries.

For syntax requirements of individual query options, see the OData protocol documentation.

The noscript parameter is also supported:

 

URI Parameter Required Description

noscript

No

When a value of true is supplied, the execution of registered scripts is suppressed. To suppress script execution, you must also supply the service master key in the X-ZUMO-MASTER header.

Request Headers

The following table describes the request headers.

 

Request Header Required  

Accept

No

Set this header to application/json.

X-ZUMO-APPLICATION

Conditional

The application key of the mobile service. You must specify a valid application key when required to access the table operation. This is the default table operation access permission.

X-ZUMO-AUTH

Conditional

The service-generated authentication token for an authenticated user. You must specify a token for an authenticated user when required to access the table operation.

X-ZUMO-MASTER

Conditional

The service master key. You should only include this key when administrator access is required to access the table operation.

securitySecurity Note
The service master key is a critical security credential that provides administrator access to your data service. Do not share this secret with anyone or distribute it with your app. This key must always be securely distributed over an encrypted channel.

Request Body

None.

The response includes an HTTP status code, a set of response headers, and a response body.

Status Code

A successfully operation returns status code 200 (OK).

Response Headers

The response for this operation includes the following headers. The response may also include additional standard HTTP headers. All standard headers conform to the HTTP/1.1 protocol specification.

 

Response Header Description

Content-Length

The length of the response body.

Content-Type

Header set to application/json.

x-zumo-version

Indicates which version of the runtime executed the request.

Response Body

The JSON representation of the query result. Results are represented as a single JSON object or a collection of JSON objects.

noteNote
When you include the $inlinecount parameter in your query, the JSON in the response is wrapped by a new JSON object with a results property, which includes the results data as a collection of JSON objects, and a count property, which is the total count.

Authorization depends on the access permission requirements for the table operation, which are summarized as follows:

 

Table operation access permission Required authorization header

Everyone

None

Anybody with the application key

X-ZUMO-APPLICATION

Only Authenticated Users

X-ZUMO-AUTH

Only Scripts and Admins

X-ZUMO-MASTER

Access permissions for individual table operations are set in the Windows Azure Management Portal. For more information, see Permissions.

Filtered query request

The following example URI returns JSON objects from the TodoItem table, where the complete property is false.

GET https://todolist.azure-mobile.net/tables/TodoItem?$filter=(complete%20eq%20false)

The request is sent with the following headers.

Accept: application/json
X-ZUMO-APPLICATION: UzMAOXRlJdZyqibeUqCMoZZMrUXIRs92
Host: todolist.azure-mobile.net

After the request has been sent, the following response is returned.

HTTP/1.1 200 OK
Content-Type: application/json
x-zumo-version: Zumo.Main.0.1.6.527.Runtime
Date: Thu, 20 Sep 2012 05:59:27 GMT
Content-Length: 188

[{"id":1,"text":"Sign-up for the free trial","complete":false},{"id":2,"text":"Create the mobile service","complete":false },
    {"id":3,"text":"Complete the quickstart","complete":false}]

Filtered query request that includes total count

The following example URI returns the same filtered query, including the total count value, which in this case is 3.

GET https://todolist.azure-mobile.net/tables/TodoItem?$filter=(complete%20eq%20false)&$inlinecount=allpages

The request is sent with the following headers.

Accept: application/json
X-ZUMO-APPLICATION: UzMAOXRlJdZyqibeUqCMoZZMrUXIRs92
Host: todolist.azure-mobile.net

After the request has been sent, the following response is returned.

HTTP/1.1 200 OK
Content-Type: application/json
x-zumo-version: Zumo.Main.0.1.6.527.Runtime
Date: Thu, 20 Sep 2012 05:59:27 GMT
Content-Length: 211

{"results": [{"id":1,"text":"Sign-up for the free trial","complete":false},{"id":2,"text":"Create the mobile service","complete":false },
    {"id":3,"text":"Complete the quickstart","complete":false}],"count":3}

Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft. All rights reserved.