WHAT IT ANSWERS
这张表适合回答什么
- 查询历史或盘中价格与成交
- 构建行情、波动率和衍生品特征
DATASET · market
market.rt_equity_overnight_bar
保存美股隔夜及延长时段的一分钟 K 线,用于观察常规开盘前后的价格发现;一行由 venue、session_date、symbol、ts_start 定位,主要字段包括 open、high、low、close、volume。
ts_startWHAT IT ANSWERS
GRAIN & TIME
KEY FIELDS
venuesession_datesymbolts_startRECOMMENDED JOINS
该表主要按自身业务键使用,目前没有推荐的跨表主键联接。
HOW TO QUERY SAFELY
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。
MACHINE CONTRACT
venue, session_date, symbol, ts_startvenue, session_date, symbol, ts_startcanonical_final_activesymbol→ symbol · stringPOINT IN TIME
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
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。
curl --fail-with-body -H "Authorization: Bearer $FRIENDS_DATA_API_KEY" "https://api.alphahubs.uk/api/v1/data/datasets/market/rt_equity_overnight_bar/rows?limit=100&symbol=AAPL"from friends_data_api import FriendsDataClient, Settings
async with FriendsDataClient(Settings.from_env()) as client:
page = await client.get_dataset_rows('market', 'rt_equity_overnight_bar', limit=100, filters={'symbol': 'AAPL'})
print(page.data)
if page.has_more:
print("next cursor:", page.next_cursor)friends-data get-dataset-rows market rt_equity_overnight_bar --limit 100 --filter symbol=AAPL{
"arguments": {
"dataset": "rt_equity_overnight_bar",
"filters": {
"symbol": "AAPL"
},
"limit": 100,
"namespace": "market"
},
"tool": "get_dataset_rows"
}FIELD DICTIONARY
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 | session_datedate | Date | string / date | no | default_order, warehouse_primary_key, contract_unique_key | Calendar date for session date (YYYY-MM-DD).名称推导 |
| 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 | ts_start | DateTime('America/New_York') | string / date-time | no | time, default_order, warehouse_primary_key, contract_unique_key | Source-normalized field: ts start.名称推导 |
| 4 | open | Float64 | number | no | value | Opening price for the represented interval.标准术语表 |
| 5 | high | Float64 | number | no | value | Highest price for the represented interval.标准术语表 |
| 6 | low | Float64 | number | no | value | Lowest price for the represented interval.标准术语表 |
| 7 | close | Float64 | number | no | value | Closing or last price for the represented interval.标准术语表 |
| 8 | volume | UInt64 | integer | no | value | Traded volume for the represented interval.标准术语表 |
| 9 | dollar_vol | Float64 | number | no | value | Source-normalized field: dollar vol.名称推导 |
| 10 | venue | LowCardinality(String) | string | no | default_order, warehouse_primary_key, contract_unique_key | Source-normalized field: venue.名称推导 |
| 11 | version | UInt64 | integer | no | provenance | Monotonic row version used for correction-aware reads.标准术语表 |
| 12 | is_deleted | UInt8 | integer | no | value | Soft-delete marker; public serving excludes current tombstones.标准术语表 |
| 13 | ingested_atUTC_datetime | DateTime64(3, 'UTC') | string / date-time | no | provenance | UTC timestamp when the source record entered the warehouse.标准术语表 |
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。