WHAT IT ANSWERS
这张表适合回答什么
- 读取已完成的研究信号和市场状态
- 复盘信号随行情变化的结果
DATASET · research
Daybreak 盘前财报观察
research.daybreak_premarket_earnings_watch
这是已经产出的研究信号与市场状态中的“Daybreak 盘前财报观察”数据集；一行由 trade_date、symbol 定位，主要字段包括 instrument_id、report_date、time_of_day、session_slot、estimate_eps。
字段33
关键字段2
更新口径producer_schedule
时间列
trade_date单页上限5000
分页Cursor
PIT不支持
规模1K-9K
GRAIN & TIME
一行代表什么
- 业务粒度
- 每行代表“Daybreak 盘前财报观察”的一条记录；逻辑粒度由 trade_date × symbol 共同确定。
- 时间口径
- 以 trade_date 为主要查询时间轴；除下方限制特别说明外，时间戳按 UTC、日期按来源市场日历解释。
- 更新节奏
- 由对应生产任务或事件触发更新，不承诺固定日历频率；查询前先检查最新时间。
KEY FIELDS
先看这些字段
trade_date- 对应市场日历中的交易日。
symbol- 证券或交易对的展示代码。
RECOMMENDED JOINS
怎样和其他表关联
ref.instrumenton instrument_id用 instrument_id 补充证券代码、名称、市场、交易所和资产类型。
ref.calendaron market + trade_date（有 market 时）需要计算交易日偏移时联接交易日历；无 market 字段时先确定适用市场。
HOW TO QUERY SAFELY
查询方法与已知限制
先用 catalog 确认当前契约；可按 catalog 中列出的 filters 进一步缩小范围；单页最多 5000 行，响应有 has_more 时原样传回 next_cursor 继续分页。
- 返回范围仍受 Friends 权限、单页上限和 catalog 中的筛选契约约束。
MACHINE CONTRACT
筛选、排序与分页
- 默认排序
trade_date, symbol- 唯一键
trade_date, symbol- 读取模式
canonical_final_active- 最大时间窗
- 未单独限制
可用 filters
instrument_id→ instrument_id · integermarket→ market · stringprovider→ provider · stringsymbol→ symbol · stringtrade_date→ trade_date · stringPOINT IN TIME
可复现读取
该资产没有 PIT 契约。普通 rows 端点仍按当前公开读模式返回数据；不要把它表述成历史时点快照。
COPY-READY CALLS
怎么调用
同一数据集可用 HTTP、Python SDK、CLI 或 MCP；Key 始终只通过环境变量/Bearer Header 传递。
HTTP
curl --fail-with-body -H "Authorization: Bearer $FRIENDS_DATA_API_KEY" "https://api.alphahubs.uk/api/v1/data/datasets/research/daybreak_premarket_earnings_watch/rows?limit=100&instrument_id=1"PYTHON SDK
from friends_data_api import FriendsDataClient, Settings
async with FriendsDataClient(Settings.from_env()) as client:
page = await client.get_dataset_rows('research', 'daybreak_premarket_earnings_watch', limit=100, filters={'instrument_id': 1})
print(page.data)
if page.has_more:
print("next cursor:", page.next_cursor)CLI
friends-data get-dataset-rows research daybreak_premarket_earnings_watch --limit 100 --filter instrument_id=1MCP TOOL CALL
{
"arguments": {
"dataset": "daybreak_premarket_earnings_watch",
"filters": {
"instrument_id": 1
},
"limit": 100,
"namespace": "research"
},
"tool": "get_dataset_rows"
}FIELD DICTIONARY
33 个返回字段
descriptionSource 可在 JSON 中区分仓库注释、标准术语表和名称推导说明。
| # | 字段 | ClickHouse 类型 | JSON | 可空 | 角色 | 说明 |
|---|---|---|---|---|---|---|
| 1 | trade_datedate | Date | string / date | no | time, filter, default_order, warehouse_primary_key, contract_unique_key | Trading-session date in the dataset's market calendar.标准术语表 |
| 2 | symbol | LowCardinality(String) | string | no | filter, default_order, warehouse_primary_key, contract_unique_key | Display or trading symbol for the instrument.标准术语表 |
| 3 | instrument_id | UInt64 | integer | no | filter | WarrenHub canonical instrument identifier; use it for cross-dataset joins.标准术语表 |
| 4 | report_datedate | Date | string / date | no | value | Reporting-period or statement date.标准术语表 |
| 5 | time_of_day | LowCardinality(String) | string | no | value | Source-normalized field: time of day.名称推导 |
| 6 | session_slot | LowCardinality(String) | string | no | value | Source-normalized field: session slot.名称推导 |
| 7 | estimate_eps | Nullable(Float64) | number | yes | value | Source-normalized field: estimate eps.名称推导 |
| 8 | estimate_revenue | Nullable(Float64) | number | yes | value | Source-normalized field: estimate revenue.名称推导 |
| 9 | prev_close | Float64 | number | no | value | Source-normalized field: prev close.名称推导 |
| 10 | premarket_price | Float64 | number | no | value | Price value for premarket price.名称推导 |
| 11 | premarket_vwap | Float64 | number | no | value | Source-normalized field: premarket vwap.名称推导 |
| 12 | premarket_volume | UInt64 | integer | no | value | Quantity for premarket volume.名称推导 |
| 13 | premarket_gap_pctpercent | Float64 | number | no | value | Percentage value for premarket gap pct.名称推导 |
| 14 | market | LowCardinality(String) | string | no | filter | Canonical market or country-market code.标准术语表 |
| 15 | name | String | string | no | value | Canonical human-readable name.标准术语表 |
| 16 | sector | LowCardinality(String) | string | no | value | Source-normalized field: sector.名称推导 |
| 17 | is_large_liquid | UInt8 | integer | no | value | Whether large liquid applies to the row.名称推导 |
| 18 | status | LowCardinality(String) | string | no | value | Source-normalized field: status.名称推导 |
| 19 | evidence_json | String | string | no | value | Source-normalized field: evidence json.名称推导 |
| 20 | producer_version | LowCardinality(String) | string | no | value | Source-normalized field: producer version.名称推导 |
| 21 | run_id | String | string | no | value | Identifier for run.名称推导 |
| 22 | version | UInt64 | integer | no | provenance | Monotonic row version used for correction-aware reads.标准术语表 |
| 23 | is_deleted | UInt8 | integer | no | value | Soft-delete marker; public serving excludes current tombstones.标准术语表 |
| 24 | created_atUTC_datetime | DateTime64(3, 'UTC') | string / date-time | no | value | UTC timestamp when the warehouse row was first created.标准术语表 |
| 25 | provider | LowCardinality(String) | string | no | filter, provenance | Upstream data provider identifier.标准术语表 |
| 26 | source_url | String | string | no | provenance | URL of the upstream evidence or record when distributable.标准术语表 |
| 27 | source_record_id | String | string | no | provenance | Provider-side identifier for the source record.标准术语表 |
| 28 | raw_payload_hash | String | string | no | provenance | Opaque fingerprint of the normalized source payload for provenance checks.标准术语表 |
| 29 | parser_version | LowCardinality(String) | string | no | provenance | Version of the parser or normalizer that produced the row.标准术语表 |
| 30 | quality_status | LowCardinality(String) | string | no | provenance | Machine-readable data-quality classification.标准术语表 |
| 31 | license_scope | LowCardinality(String) | string | no | provenance | License or redistribution scope attached to the row.标准术语表 |
| 32 | visibility_tier | LowCardinality(String) | string | no | provenance | Serving visibility tier attached to the row.标准术语表 |
| 33 | ingest_run_id | String | string | no | provenance | Identifier of the ingestion run that produced the row.标准术语表 |
没有匹配字段
换一个字段名、类型或角色。
结构来自 Friends 只读身份可见的真实 serving relation；权限、过滤、排序、PIT 与分页来自可执行 DatasetSpec。Schema observed at 2026-10-06T18:08:52Z。