Use the POST /api/v3/query endpoint of the Data 360 Query API to execute a SQL query against your Data 360 data. Submit a query in ASYNC mode to receive a queryId for polling, or use ADAPTIVE mode to receive results immediately when the query completes quickly. Both modes support JSON and Apache Arrow response formats.
This API is the recommended interface for new integrations. See Migrate from Query API V1 and V2 for guidance on updating existing code.
Important
Syntax
HTTP Method: POST
Format: REST
URI: /api/v3/query
Request Headers
Header
Value
Authorization
Bearer {accessToken}
Content-Type
application/json
Accept
application/json (default) or application/vnd.apache.arrow.stream
Array of parameter objects for parameterized queries. Each object requires type (a Data 360 SQL type name) and value (a JSON string). See Parameterized Queries.
settings
object
No
Query settings. Supported keys: timezone (for example, "Etc/UTC"), language (for example, "de_DE").
resultRange
object
No
Controls what is returned within the REST response. ADAPTIVE mode only. Supported keys: rowLimit (integer), byteLimit (integer, default and maximum 20 MB).
queryRowLimit
integer
No
Maximum number of rows to produce by the query. Acts as an implicit LIMIT clause — the query will not produce more rows than this value. Set to 0 to retrieve only the schema without producing any rows.
Parameterized Queries
The paramStyle request field controls how parameters are bound in your SQL:
QUESTION_MARK (default) — Use ? placeholders
NAMED — Use named placeholders (:paramName)
DOLLAR_NUMBERED — Use positional placeholders ($1, $2, …)
Each object in the parameters array requires a type and a value.
type — A Data 360 SQL type name, such as varchar, bigint, or boolean. For types that take a length or precision, include the relevant field, for example { "type": "varchar", "length": 10, "value": "abc" }.
value — The parameter value, always passed as a JSON string. Even for numeric types, pass the value as a string, for example "42", not 42.
type takes SQL type names, not JSON type names. Use varchar rather than string.
Note
Response Structure
Both ASYNC and ADAPTIVE modes share a common response structure.
Response Headers
Both ASYNC and ADAPTIVE modes return these response headers.
Header
Description
Date
Timestamp when the response was generated.
Content-Type
application/json or application/vnd.apache.arrow.stream depending on the Accept request header.
x-hyperdb-status
JSON-serialized string containing the full query status. Fields: queryId, completionStatus, chunkCount, rowCount, progress, expirationTime, and executionStats. Use the queryId from this header to poll for results.
Response Body — ASYNC Mode
In ASYNC mode, the response body omits the data field and returnedRows is 0. Use the queryId from the x-hyperdb-status response header to poll GET /api/v3/query/{queryId} for completion.
Field
Description
metadata
Object containing column schema
data
Omitted in ASYNC mode
returnedRows
Always 0 in ASYNC mode
Response Body — ADAPTIVE Mode
If the query completes within the adaptive timeout, data contains the result rows. If the query exceeds the adaptive timeout without producing rows, the response mimics ASYNC mode: the data field is omitted and returnedRows is 0. Use the queryId from the x-hyperdb-status response header to poll GET /api/v3/query/{queryId} for completion.
Field
Description
metadata
Object containing column schema
data
Array of result rows (each row is an array); omitted if adaptive timeout reached
returnedRows
Number of rows returned (0 if adaptive timeout reached)
Examples
These examples show ASYNC and ADAPTIVE requests and responses.
Set Accept: application/vnd.apache.arrow.stream to request a binary Arrow IPC stream instead of JSON. Use an Arrow-compatible client library (such as PyArrow or the Apache Arrow Java library) to read the stream.
ASYNC Mode (Apache Arrow)
In ASYNC mode, the response body always contains only schema metadata with no data rows, regardless of the Accept header. Retrieve the queryId from the x-hyperdb-status response header and poll GET /api/v3/query/{queryId} for completion, then use GET /api/v3/query/{queryId}/rows or /chunks/{chunkId} with Accept: application/vnd.apache.arrow.stream to retrieve results.
ADAPTIVE Mode (Apache Arrow)
Set Accept: application/vnd.apache.arrow.stream to receive an inline ADAPTIVE result as a binary Arrow IPC stream. If the query exceeds the adaptive timeout and falls back to ASYNC mode, the response body contains only schema metadata with no data rows. Retrieve the queryId from the x-hyperdb-status response header and poll GET /api/v3/query/{queryId} for completion.
Error Handling
V3 returns structured error objects with HTTP status codes.
Status
Meaning
400
Invalid SQL or request payload
401
Missing or invalid authentication
408
Request timed out
429
Rate limit exceeded
500
Internal server error
Error responses include a rich error model with SQLSTATE codes and human-readable detail.
The position field is included for syntax errors. errorSource indicates whether the error originated from user input ("User") or the system. See Query Services Status Codes for the full reference.