WHAT IT ANSWERS
这张表适合回答什么
- 解析证券与来源标识映射
- 为跨表查询补充分类和主数据
DATASET · ref
ref.exchange_eodhd
这是证券主数据、交易日历与跨来源映射中的“交易所 EODHD”数据集;一行由 exchange_code、source 定位,主要字段包括 exchange_name、operating_mic、country、country_iso2、country_iso3。
updated_atWHAT IT ANSWERS
GRAIN & TIME
KEY FIELDS
exchange_codesourceRECOMMENDED 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
exchange_code, sourceexchange_code, sourcecanonical_final_activeprovider→ provider · stringsource→ source · 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/ref/exchange_eodhd/rows?limit=100&provider=PROVIDER_VALUE"from friends_data_api import FriendsDataClient, Settings
async with FriendsDataClient(Settings.from_env()) as client:
page = await client.get_dataset_rows('ref', 'exchange_eodhd', limit=100, filters={'provider': 'PROVIDER_VALUE'})
print(page.data)
if page.has_more:
print("next cursor:", page.next_cursor)friends-data get-dataset-rows ref exchange_eodhd --limit 100 --filter provider=PROVIDER_VALUE{
"arguments": {
"dataset": "exchange_eodhd",
"filters": {
"provider": "PROVIDER_VALUE"
},
"limit": 100,
"namespace": "ref"
},
"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 | exchange_code | LowCardinality(String) | string | no | default_order, warehouse_primary_key, contract_unique_key | Source-normalized field: exchange code.名称推导 |
| 2 | exchange_name | String | string | no | value | Source-normalized field: exchange name.名称推导 |
| 3 | operating_mic | String | string | no | value | Source-normalized field: operating mic.名称推导 |
| 4 | country | LowCardinality(String) | string | no | value | Source-normalized field: country.名称推导 |
| 5 | country_iso2 | FixedString(2) | string | no | value | Source-normalized field: country iso2.名称推导 |
| 6 | country_iso3 | FixedString(3) | string | no | value | Source-normalized field: country iso3.名称推导 |
| 7 | currency | LowCardinality(String) | string | no | value | ISO-like currency code for monetary values.标准术语表 |
| 8 | timezone | String | string | no | value | Source-normalized field: timezone.名称推导 |
| 9 | trading_open_local | String | string | no | value | Source-normalized field: trading open local.名称推导 |
| 10 | trading_close_local | String | string | no | value | Source-normalized field: trading close local.名称推导 |
| 11 | trading_open_utc | String | string | no | value | Source-normalized field: trading open utc.名称推导 |
| 12 | trading_close_utc | String | string | no | value | Source-normalized field: trading close utc.名称推导 |
| 13 | working_days | String | string | no | value | Source-normalized field: working days.名称推导 |
| 14 | active_tickers | UInt32 | integer | no | value | Source-normalized field: active tickers.名称推导 |
| 15 | updated_tickers | UInt32 | integer | no | value | Source-normalized field: updated tickers.名称推导 |
| 16 | previous_day_updated_tickers | UInt32 | integer | no | value | Source-normalized field: previous day updated tickers.名称推导 |
| 17 | provider | LowCardinality(String) | string | no | filter, provenance | Upstream data provider identifier.标准术语表 |
| 18 | source_url | String | string | no | provenance | URL of the upstream evidence or record when distributable.标准术语表 |
| 19 | source_record_id | String | string | no | provenance | Provider-side identifier for the source record.标准术语表 |
| 20 | raw_payload_hash | String | string | no | provenance | Opaque fingerprint of the normalized source payload for provenance checks.标准术语表 |
| 21 | parser_version | LowCardinality(String) | string | no | provenance | Version of the parser or normalizer that produced the row.标准术语表 |
| 22 | quality_status | LowCardinality(String) | string | no | provenance | Machine-readable data-quality classification.标准术语表 |
| 23 | license_scope | LowCardinality(String) | string | no | provenance | License or redistribution scope attached to the row.标准术语表 |
| 24 | visibility_tier | LowCardinality(String) | string | no | provenance | Serving visibility tier attached to the row.标准术语表 |
| 25 | ingest_run_id | String | string | no | provenance | Identifier of the ingestion run that produced the row.标准术语表 |
| 26 | version | UInt64 | integer | no | provenance | Monotonic row version used for correction-aware reads.标准术语表 |
| 27 | source | LowCardinality(String) | string | no | filter, default_order, warehouse_primary_key, contract_unique_key, provenance | Normalized upstream source identifier.标准术语表 |
| 28 | is_deleted | UInt8 | integer | no | value | Soft-delete marker; public serving excludes current tombstones.标准术语表 |
| 29 | created_atUTC_datetime | DateTime | string / date-time | no | value | UTC timestamp when the warehouse row was first created.标准术语表 |
| 30 | updated_atUTC_datetime | DateTime | string / date-time | no | time | UTC timestamp when the warehouse row was last updated.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。