REST QueryMore call returns only one record at a time
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Known Issues · In Review

REST QueryMore call returns only one record at a time

API

Last updated 2022-02-15 ·Reference W-1939405 ·Reported By 7 users

In Review

Summary
REST QueryMore returns only one record at a time, for requests retrieving additional query results if the query has a blob field in its select list.

When trying to query on objects with Blob fields like Body in Attachment, the first 2000 records are retrieved but the nextRecordsUrl only returns one record at a time. The nextRecordsUrl in result returns the next record and so forth.

This is because of the Query includes a blob field. This is also seen with Feed sObjects like AccountFeed (https://developer.salesforce.com/docs/atlas.en-us.api.meta/api/sforce_api_objects_customobject__feed.htm) or even Knowledge articles that have attachments.

Repro
1. Prepare a large number of records (2000+) so that REST QueryMore requests can be called.
2. Open up workbench and go to REST explorer
3. Enter the query which contains a blob field and execute it.
/services/data/v45.0/query?q=SELECT%20Id%2CIsDeleted%2CName%2CContentType%2CBody%2CCreatedDate%20FROM%20Attachment
4. Click the link next to "nextRecordsUrl:"

Actual Result :

If the query results are too large, the link to retrieve additional results appears.
You will see only one record is retrieved.

/services/data/v45.0/query/01g1Y00008zOiDxQAK-2001

nextRecordsUrl in seen as increment by one.

/services/data/v45.0/query/01g1Y00008zOiDxQAK-2002
/services/data/v45.0/query/01g1Y00008zOiDxQAK-2003
/services/data/v45.0/query/01g1Y00008zOiDxQAK-2004

The Body info seen in the response is of the format:

"Body" : {
"asByteArray" : "dGVzdGluZw==",
"inputStream" : { },
"length" : 7,
"maxToKeep" : 524288
}

Expected Result

Next batch of 2000 results should be available in nextRecordsUrl consistently

Body info should be of the format :

Body: /services/data/v45.0/sobjects/Attachment/00P6F00002iuuB7UAI/Body

Workaround
Remove the Blob field from the query.

Reported By (7)

Adam Szkudlarek Sam Hoult Daniel Hoechst Baptiste Bieber Arnaud Schroeder Brett Barlow Douwe Van Der Meer

Is it Fixed?

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