DQL Data Asynchronous Query¶
POST /api/v1/df/asynchronous/query_data
Overview¶
Body Request Parameters¶
| Parameter Name | Type | Required | Description |
|---|---|---|---|
| queries | array | Multiple command queries, consisting of a list of query objects Allow empty: False |
|
| fieldTagDescNeeded | boolean | Whether field or tag description information is needed Allow empty: False |
Parameter Supplementary Explanation¶
Query Explanation
- Parameter Explanation
| Parameter Name | Type | Required | Description |
|---|---|---|---|
| queries | array | Y | Multiple command queries, consisting of a list of query objects |
| fieldTagDescNeeded | boolean | Whether field or tag description information is needed |
- queries[*] Member Parameter Structure Explanation
*** Note, the
async_idparameter has been added based on the "DQL Data Query" interface ***
| Parameter Name | Type | Required | Description |
|---|---|---|---|
async_id |
string | N | Asynchronous query task ID, this value comes from the content.data[*].async_id in the previous dql query result; if this value exists in the previous query result, it needs to be included in this query |
| qtype | string | Y | Type of query statement dql: indicates dql type query statement; promql: indicates PromQl type query statement |
| query | json | Y | Query structure |
| query.q | string | Query statement consistent with qtype, such as dql or promql query statement | |
| query.ignore_cache | boolean | Whether to disable cache for the query, default is false, indicating use of cache | |
| query.promqlType | enum | Effective when qtype=promql, type of promql query, optional values instantQuery and rangeQuery, default value is rangeQuery |
|
| query.highlight | boolean | Whether to display highlighted data | |
| query.timeRange | array | Timestamp list for time range | |
| query.disableMultipleField | bool | Whether to enable single-column mode, default is true |
|
| query.showLabel | bool | Whether to display object labels, default is none | |
| query.funcList | array | Re-aggregation to modify dql return value, note that when disableMultipleField=False, this parameter is invalid | |
| query.slimit | integer | Time series group size, only effective for Metrics queries | |
| query.soffset | integer | Time series group offset | |
| query.limit | integer | Pagination size | |
| query.offset | integer | Pagination offset | |
| query.orderby | array | Sorting list, {fieldName:method} , note that sorting for Measurement queries only supports fieldName=time; method in ["desc", "asc"]; note that sorting for Measurement queries only supports fieldName=time |
|
| query.sorderby | array | Sorting list, sorderby's column is an expression, supports all aggregation functions that return a single value min max last avg p90 p95 count, {fieldName:method}, structure is consistent with orderby |
|
| query.order_by | array | Sorting list, structure is [{"column": "field", "order": "DESC"}], doris engine compatibility field | |
| query.sorder_by | array | Sorting list, structure is [{"column": "field", "order": "DESC"}], doris engine compatibility field | |
| query.density | string | Response point density, priority is lower than autoDensity and higher than density set in dql statement | |
| query.interval | integer | Unit is seconds, time slice interval, used to calculate response points; calculated points less than or equal to points when density=high are valid, otherwise invalid | |
| query.search_after | array | Pagination query marker. The search_after value from the previous request response result with the same parameters is used as the parameter for this request. | |
| query.maxPointCount | integer | Maximum number of points | |
| query.workspaceUUID | string | UUID of the workspace to query, "*" means query all authorized workspaces, refer to the interface /wksp_share/granted_ws_list for workspace reference | |
| query.workspaceUUIDs | array | UUIDs of the workspaces to query, priority is higher than query.workspaceUUID. ["*"] means query all authorized workspaces, refer to the interface /wksp_share/granted_ws_list for workspace reference | |
| query.targetRegion | string | When specifying the query workspace as ["*"], this field is mandatory | |
| query.output_format | string | lineprotocol: line protocol output, if not filled, the existing output format remains unchanged by default | |
| query.cursor_time | integer | Segmented query threshold: for the first segmented query, cursor_time needs to be set to end_time; for subsequent segmented queries, cursor_time needs to be set to next_cursor_time in the response | |
| query.cursor_token | string | Pagination query token (returned by the engine as cursor_token value): for pagination queries, the next_cursor_token returned from the previous query needs to be set as the cursor_token for this query; requests without cursor_token may cause data with the same timestamp to be skipped during pagination. | |
| query.disable_sampling | bool | Sampling disable switch, default value is false |
- Response Point Density
densityParameter Value Explanation
| Optional Value | Description |
|---|---|
| lower | Lower, 60 points |
| low | Low, 180 points |
| medium | Medium, 360 points |
| high | Low, 720 points |
-
Note the priority of the point density parameter, maximum density
density[high]* maxPointCount > interval > density > control parameters in dql statement -
Common Query Explanations
-
Unrecovered Event Query Note: When using the openapi interface for data queries, the default role is administrator. Be aware that data access rules may apply.